1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298
|
# OpenAPI Specification
## (fka Swagger RESTful API Documentation Specification)
#### Version 2.0
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC 2119](http://www.ietf.org/rfc/rfc2119.txt).
The Swagger specification is licensed under [The Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0.html).
## Introductions
Swaggerâ„¢ is a project used to describe and document RESTful APIs.
The Swagger specification defines a set of files required to describe such an API. These files can then be used by the Swagger-UI project to display the API and Swagger-Codegen to generate clients in various languages. Additional utilities can also take advantage of the resulting files, such as testing tools.
## Revision History
Version | Date | Notes
--- | --- | ---
2.0 | 2014-09-08 | Release of Swagger 2.0
1.2 | 2014-03-14 | Initial release of the formal document.
1.1 | 2012-08-22 | Release of Swagger 1.1
1.0 | 2011-08-10 | First release of the Swagger Specification
## Definitions
##### <a name="pathTemplating"></a>Path Templating
Path templating refers to the usage of curly braces ({}) to mark a section of a URL path as replaceable using path parameters.
##### <a name="mimeTypes"></a>Mime Types
Mime type definitions are spread across several resources. The mime type definitions should be in compliance with [RFC 6838](http://tools.ietf.org/html/rfc6838).
Some examples of possible mime type definitions:
```
text/plain; charset=utf-8
application/json
application/vnd.github+json
application/vnd.github.v3+json
application/vnd.github.v3.raw+json
application/vnd.github.v3.text+json
application/vnd.github.v3.html+json
application/vnd.github.v3.full+json
application/vnd.github.v3.diff
application/vnd.github.v3.patch
```
##### <a name="httpCodes"></a>HTTP Status Codes
The HTTP Status Codes are used to indicate the status of the executed operation. The available status codes are described by [RFC 7231](http://tools.ietf.org/html/rfc7231#section-6) and in the [IANA Status Code Registry](http://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml).
## Specification
### Format
The files describing the RESTful API in accordance with the Swagger specification are represented as JSON objects and conform to the JSON standards. YAML, being a superset of JSON, can be used as well to
represent a Swagger specification file.
For example, if a field is said to have an array value, the JSON array representation will be used:
```js
{
"field" : [...]
}
```
While the API is described using JSON it does not impose a JSON input/output to the API itself.
All field names in the specification are **case sensitive**.
The schema exposes two types of fields. Fixed fields, which have a declared name, and Patterned fields, which declare a regex pattern for the field name. Patterned fields can have multiple occurrences as long as each has a unique name.
### File Structure
The Swagger representation of the API is made of a single file. However, parts of the definitions can be split into separate files, at the discretion of the user. This is applicable for `$ref` fields in the specification as follows from the [JSON Schema](http://json-schema.org) definitions.
By convention, the Swagger specification file is named `swagger.json`.
### Data Types
Primitive data types in the Swagger Specification are based on the types supported by the [JSON-Schema Draft 4](https://tools.ietf.org/html/draft-zyp-json-schema-04#section-3.5). Models are described using the [Schema Object](#schemaObject) which is a subset of JSON Schema Draft 4.
An additional primitive data type `"file"` is used by the [Parameter Object](#parameterObject) and the [Response Object](#responseObject) to set the parameter type or the response as being a file.
<a name="dataTypeFormat"></a>Primitives have an optional modifier property `format`. Swagger uses several known formats to more finely define the data type being used. However, the `format` property is an open `string`-valued property, and can have any value to support documentation needs. Formats such as `"email"`, `"uuid"`, etc., can be used even though they are not defined by this specification. Types that are not accompanied by a `format` property follow their definition from the JSON Schema (except for `file` type which is defined above). The formats defined by the Swagger Specification are:
Common Name | [`type`](#dataTypeType) | [`format`](#dataTypeFormat) | Comments
----------- | ------ | -------- | --------
integer | `integer` | `int32` | signed 32 bits
long | `integer` | `int64` | signed 64 bits
float | `number` | `float` | |
double | `number` | `double` | |
string | `string` | | |
byte | `string` | `byte` | base64 encoded characters
binary | `string` | `binary` | any sequence of octets
boolean | `boolean` | | |
date | `string` | `date` | As defined by `full-date` - [RFC3339](http://xml2rfc.ietf.org/public/rfc/html/rfc3339.html#anchor14)
dateTime | `string` | `date-time` | As defined by `date-time` - [RFC3339](http://xml2rfc.ietf.org/public/rfc/html/rfc3339.html#anchor14)
password | `string` | `password` | Used to hint UIs the input needs to be obscured.
### Schema
#### <a name="swaggerObject"></a>Swagger Object
This is the root document object for the API specification. It combines what previously was the Resource Listing and API Declaration (version 1.2 and earlier) together into one document.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="swaggerSwagger"></a>swagger | `string` | **Required.** Specifies the Swagger Specification version being used. It can be used by the Swagger UI and other clients to interpret the API listing. The value MUST be `"2.0"`.
<a name="swaggerInfo"></a>info | [Info Object](#infoObject) | **Required.** Provides metadata about the API. The metadata can be used by the clients if needed.
<a name="swaggerHost"></a>host | `string` | The host (name or ip) serving the API. This MUST be the host only and does not include the scheme nor sub-paths. It MAY include a port. If the `host` is not included, the host serving the documentation is to be used (including the port). The `host` does not support [path templating](#pathTemplating).
<a name="swaggerBasePath"></a>basePath | `string` | The base path on which the API is served, which is relative to the [`host`](#swaggerHost). If it is not included, the API is served directly under the `host`. The value MUST start with a leading slash (`/`). The `basePath` does not support [path templating](#pathTemplating).
<a name="swaggerSchemes"></a>schemes | [`string`] | The transfer protocol of the API. Values MUST be from the list: `"http"`, `"https"`, `"ws"`, `"wss"`. If the `schemes` is not included, the default scheme to be used is the one used to access the Swagger definition itself.
<a name="swaggerConsumes"></a>consumes | [`string`] | A list of MIME types the APIs can consume. This is global to all APIs but can be overridden on specific API calls. Value MUST be as described under [Mime Types](#mimeTypes).
<a name="swaggerProduces"></a>produces | [`string`] | A list of MIME types the APIs can produce. This is global to all APIs but can be overridden on specific API calls. Value MUST be as described under [Mime Types](#mimeTypes).
<a name="swaggerPaths"></a>paths | [Paths Object](#pathsObject) | **Required.** The available paths and operations for the API.
<a name="swaggerDefinitions"></a>definitions | [Definitions Object](#definitionsObject) | An object to hold data types produced and consumed by operations.
<a name="swaggerParameters"></a>parameters | [Parameters Definitions Object](#parametersDefinitionsObject) | An object to hold parameters that can be used across operations. This property *does not* define global parameters for all operations.
<a name="swaggerResponses"></a>responses | [Responses Definitions Object](#responsesDefinitionsObject) | An object to hold responses that can be used across operations. This property *does not* define global responses for all operations.
<a name="swaggerSecurityDefinitions"></a>securityDefinitions | [Security Definitions Object](#securityDefinitionsObject) | Security scheme definitions that can be used across the specification.
<a name="swaggerSecurity"></a>security | [[Security Requirement Object](#securityRequirementObject)] | A declaration of which security schemes are applied for the API as a whole. The list of values describes alternative security schemes that can be used (that is, there is a logical OR between the security requirements). Individual operations can override this definition.
<a name="swaggerTags"></a>tags | [[Tag Object](#tagObject)] | A list of tags used by the specification with additional metadata. The order of the tags can be used to reflect on their order by the parsing tools. Not all tags that are used by the [Operation Object](#operationObject) must be declared. The tags that are not declared may be organized randomly or based on the tools' logic. Each tag name in the list MUST be unique.
<a name="swaggerExternalDocs"></a>externalDocs | [External Documentation Object](#externalDocumentationObject) | Additional external documentation.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="swaggerExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
#### <a name="infoObject"></a>Info Object
The object provides metadata about the API. The metadata can be used by the clients if needed, and can be presented in the Swagger-UI for convenience.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="infoTitle"></a>title | `string` | **Required.** The title of the application.
<a name="infoDescription"></a>description | `string` | A short description of the application. [GFM syntax](https://guides.github.com/features/mastering-markdown/#GitHub-flavored-markdown) can be used for rich text representation.
<a name="infoTermsOfService"></a>termsOfService | `string` | The Terms of Service for the API.
<a name="infoContact"></a>contact | [Contact Object](#contactObject) | The contact information for the exposed API.
<a name="infoLicense"></a>license | [License Object](#licenseObject) | The license information for the exposed API.
<a name="infoVersion"></a>version | `string` | **Required** Provides the version of the application API (not to be confused with the specification version).
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="infoExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Info Object Example:
```js
{
"title": "Swagger Sample App",
"description": "This is a sample server Petstore server.",
"termsOfService": "http://swagger.io/terms/",
"contact": {
"name": "API Support",
"url": "http://www.swagger.io/support",
"email": "support@swagger.io"
},
"license": {
"name": "Apache 2.0",
"url": "http://www.apache.org/licenses/LICENSE-2.0.html"
},
"version": "1.0.1"
}
```
```yaml
title: Swagger Sample App
description: This is a sample server Petstore server.
termsOfService: http://swagger.io/terms/
contact:
name: API Support
url: http://www.swagger.io/support
email: support@swagger.io
license:
name: Apache 2.0
url: http://www.apache.org/licenses/LICENSE-2.0.html
version: 1.0.1
```
#### <a name="contactObject"></a>Contact Object
Contact information for the exposed API.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="contactName"></a>name | `string` | The identifying name of the contact person/organization.
<a name="contactUrl"></a>url | `string` | The URL pointing to the contact information. MUST be in the format of a URL.
<a name="contactEmail"></a>email | `string` | The email address of the contact person/organization. MUST be in the format of an email address.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="contactExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Contact Object Example:
```js
{
"name": "API Support",
"url": "http://www.swagger.io/support",
"email": "support@swagger.io"
}
```
```yaml
name: API Support
url: http://www.swagger.io/support
email: support@swagger.io
```
#### <a name="licenseObject"></a>License Object
License information for the exposed API.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="licenseName"></a>name | `string` | **Required.** The license name used for the API.
<a name="licenseUrl"></a>url | `string` | A URL to the license used for the API. MUST be in the format of a URL.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="licenseExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### License Object Example:
```js
{
"name": "Apache 2.0",
"url": "http://www.apache.org/licenses/LICENSE-2.0.html"
}
```
```yaml
name: Apache 2.0
url: http://www.apache.org/licenses/LICENSE-2.0.html
```
#### <a name="pathsObject"></a>Paths Object
Holds the relative paths to the individual endpoints. The path is appended to the [`basePath`](#swaggerBasePath) in order to construct the full URL.
The Paths may be empty, due to [ACL constraints](#securityFiltering).
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="pathsPath"></a>/{path} | [Path Item Object](#pathItemObject) | A relative path to an individual endpoint. The field name MUST begin with a slash. The path is appended to the [`basePath`](#swaggerBasePath) in order to construct the full URL. [Path templating](#pathTemplating) is allowed.
<a name="pathsExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Paths Object Example
```js
{
"/pets": {
"get": {
"description": "Returns all pets from the system that the user has access to",
"produces": [
"application/json"
],
"responses": {
"200": {
"description": "A list of pets.",
"schema": {
"type": "array",
"items": {
"$ref": "#/definitions/pet"
}
}
}
}
}
}
}
```
```yaml
/pets:
get:
description: Returns all pets from the system that the user has access to
produces:
- application/json
responses:
'200':
description: A list of pets.
schema:
type: array
items:
$ref: '#/definitions/pet'
```
#### <a name="pathItemObject"></a>Path Item Object
Describes the operations available on a single path.
A Path Item may be empty, due to [ACL constraints](#securityFiltering). The path itself is still exposed to the documentation viewer but they will not know which operations and parameters are available.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="pathItemRef"></a>$ref | `string` | Allows for an external definition of this path item. The referenced structure MUST be in the format of a [Path Item Object](#pathItemObject). If there are conflicts between the referenced definition and this Path Item's definition, the behavior is *undefined*.
<a name="pathItemGet"></a>get | [Operation Object](#operationObject) | A definition of a GET operation on this path.
<a name="pathItemPut"></a>put | [Operation Object](#operationObject) | A definition of a PUT operation on this path.
<a name="pathItemPost"></a>post | [Operation Object](#operationObject) | A definition of a POST operation on this path.
<a name="pathItemDelete"></a>delete | [Operation Object](#operationObject) | A definition of a DELETE operation on this path.
<a name="pathItemOptions"></a>options | [Operation Object](#operationObject) | A definition of a OPTIONS operation on this path.
<a name="pathItemHead"></a>head | [Operation Object](#operationObject) | A definition of a HEAD operation on this path.
<a name="pathItemPatch"></a>patch | [Operation Object](#operationObject) | A definition of a PATCH operation on this path.
<a name="pathItemParameters"></a>parameters | [[Parameter Object](#parameterObject) \| [Reference Object](#referenceObject)] | A list of parameters that are applicable for all the operations described under this path. These parameters can be overridden at the operation level, but cannot be removed there. The list MUST NOT include duplicated parameters. A unique parameter is defined by a combination of a [name](#parameterName) and [location](#parameterIn). The list can use the [Reference Object](#referenceObject) to link to parameters that are defined at the [Swagger Object's parameters](#swaggerParameters). There can be one "body" parameter at most.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="pathItemExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Path Item Object Example
```js
{
"get": {
"description": "Returns pets based on ID",
"summary": "Find pets by ID",
"operationId": "getPetsById",
"produces": [
"application/json",
"text/html"
],
"responses": {
"200": {
"description": "pet response",
"schema": {
"type": "array",
"items": {
"$ref": "#/definitions/Pet"
}
}
},
"default": {
"description": "error payload",
"schema": {
"$ref": "#/definitions/ErrorModel"
}
}
}
},
"parameters": [
{
"name": "id",
"in": "path",
"description": "ID of pet to use",
"required": true,
"type": "array",
"items": {
"type": "string"
},
"collectionFormat": "csv"
}
]
}
```
```yaml
get:
description: Returns pets based on ID
summary: Find pets by ID
operationId: getPetsById
produces:
- application/json
- text/html
responses:
'200':
description: pet response
schema:
type: array
items:
$ref: '#/definitions/Pet'
default:
description: error payload
schema:
$ref: '#/definitions/ErrorModel'
parameters:
- name: id
in: path
description: ID of pet to use
required: true
type: array
items:
type: string
collectionFormat: csv
```
#### <a name="operationObject"></a>Operation Object
Describes a single API operation on a path.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="operationTags"></a>tags | [`string`] | A list of tags for API documentation control. Tags can be used for logical grouping of operations by resources or any other qualifier.
<a name="operationSummary"></a>summary | `string` | A short summary of what the operation does. For maximum readability in the swagger-ui, this field SHOULD be less than 120 characters.
<a name="operationDescription"></a>description | `string` | A verbose explanation of the operation behavior. [GFM syntax](https://guides.github.com/features/mastering-markdown/#GitHub-flavored-markdown) can be used for rich text representation.
<a name="operationExternalDocs"></a>externalDocs | [External Documentation Object](#externalDocumentationObject) | Additional external documentation for this operation.
<a name="operationId"></a>operationId | `string` | Unique string used to identify the operation. The id MUST be unique among all operations described in the API. Tools and libraries MAY use the operationId to uniquely identify an operation, therefore, it is recommended to follow common programming naming conventions.
<a name="operationConsumes"></a>consumes | [`string`] | A list of MIME types the operation can consume. This overrides the [`consumes`](#swaggerConsumes) definition at the Swagger Object. An empty value MAY be used to clear the global definition. Value MUST be as described under [Mime Types](#mimeTypes).
<a name="operationProduces"></a>produces | [`string`] | A list of MIME types the operation can produce. This overrides the [`produces`](#swaggerProduces) definition at the Swagger Object. An empty value MAY be used to clear the global definition. Value MUST be as described under [Mime Types](#mimeTypes).
<a name="operationParameters"></a>parameters | [[Parameter Object](#parameterObject) \| [Reference Object](#referenceObject)] | A list of parameters that are applicable for this operation. If a parameter is already defined at the [Path Item](#pathItemParameters), the new definition will override it, but can never remove it. The list MUST NOT include duplicated parameters. A unique parameter is defined by a combination of a [name](#parameterName) and [location](#parameterIn). The list can use the [Reference Object](#referenceObject) to link to parameters that are defined at the [Swagger Object's parameters](#swaggerParameters). There can be one "body" parameter at most.
<a name="operationResponses"></a>responses | [Responses Object](#responsesObject) | **Required.** The list of possible responses as they are returned from executing this operation.
<a name="operationSchemes"></a>schemes | [`string`] | The transfer protocol for the operation. Values MUST be from the list: `"http"`, `"https"`, `"ws"`, `"wss"`. The value overrides the Swagger Object [`schemes`](#swaggerSchemes) definition.
<a name="operationDeprecated"></a>deprecated | `boolean` | Declares this operation to be deprecated. Usage of the declared operation should be refrained. Default value is `false`.
<a name="operationSecurity"></a>security | [[Security Requirement Object](#securityRequirementObject)] | A declaration of which security schemes are applied for this operation. The list of values describes alternative security schemes that can be used (that is, there is a logical OR between the security requirements). This definition overrides any declared top-level [`security`](#swaggerSecurity). To remove a top-level security declaration, an empty array can be used.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="operationExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Operation Object Example
```js
{
"tags": [
"pet"
],
"summary": "Updates a pet in the store with form data",
"description": "",
"operationId": "updatePetWithForm",
"consumes": [
"application/x-www-form-urlencoded"
],
"produces": [
"application/json",
"application/xml"
],
"parameters": [
{
"name": "petId",
"in": "path",
"description": "ID of pet that needs to be updated",
"required": true,
"type": "string"
},
{
"name": "name",
"in": "formData",
"description": "Updated name of the pet",
"required": false,
"type": "string"
},
{
"name": "status",
"in": "formData",
"description": "Updated status of the pet",
"required": false,
"type": "string"
}
],
"responses": {
"200": {
"description": "Pet updated."
},
"405": {
"description": "Invalid input"
}
},
"security": [
{
"petstore_auth": [
"write:pets",
"read:pets"
]
}
]
}
```
```yaml
tags:
- pet
summary: Updates a pet in the store with form data
description: ""
operationId: updatePetWithForm
consumes:
- application/x-www-form-urlencoded
produces:
- application/json
- application/xml
parameters:
- name: petId
in: path
description: ID of pet that needs to be updated
required: true
type: string
- name: name
in: formData
description: Updated name of the pet
required: false
type: string
- name: status
in: formData
description: Updated status of the pet
required: false
type: string
responses:
'200':
description: Pet updated.
'405':
description: Invalid input
security:
- petstore_auth:
- write:pets
- read:pets
```
#### <a name="externalDocumentationObject"></a>External Documentation Object
Allows referencing an external resource for extended documentation.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="externalDocDescription"></a>description | `string` | A short description of the target documentation. [GFM syntax](https://guides.github.com/features/mastering-markdown/#GitHub-flavored-markdown) can be used for rich text representation.
<a name="externalDocUrl"></a>url | `string` | **Required.** The URL for the target documentation. Value MUST be in the format of a URL.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="externalDocExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### External Documentation Object Example
```js
{
"description": "Find more info here",
"url": "https://swagger.io"
}
```
```yaml
description: Find more info here
url: https://swagger.io
```
#### <a name="parameterObject"></a>Parameter Object
Describes a single operation parameter.
A unique parameter is defined by a combination of a [name](#parameterName) and [location](#parameterIn).
There are five possible parameter types.
* Path - Used together with [Path Templating](#pathTemplating), where the parameter value is actually part of the operation's URL. This does not include the host or base path of the API. For example, in `/items/{itemId}`, the path parameter is `itemId`.
* Query - Parameters that are appended to the URL. For example, in `/items?id=###`, the query parameter is `id`.
* Header - Custom headers that are expected as part of the request.
* Body - The payload that's appended to the HTTP request. Since there can only be one payload, there can only be *one* body parameter. The name of the body parameter has no effect on the parameter itself and is used for documentation purposes only. Since Form parameters are also in the payload, body and form parameters cannot exist together for the same operation.
* Form - Used to describe the payload of an HTTP request when either `application/x-www-form-urlencoded`, `multipart/form-data` or both are used as the content type of the request (in Swagger's definition, the [`consumes`](#operationConsumes) property of an operation). This is the only parameter type that can be used to send files, thus supporting the `file` type. Since form parameters are sent in the payload, they cannot be declared together with a body parameter for the same operation. Form parameters have a different format based on the content-type used (for further details, consult http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4):
* `application/x-www-form-urlencoded` - Similar to the format of Query parameters but as a payload. For example, `foo=1&bar=swagger` - both `foo` and `bar` are form parameters. This is normally used for simple parameters that are being transferred.
* `multipart/form-data` - each parameter takes a section in the payload with an internal header. For example, for the header `Content-Disposition: form-data; name="submit-name"` the name of the parameter is `submit-name`. This type of form parameters is more commonly used for file transfers.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="parameterName"></a>name | `string` | **Required.** The name of the parameter. Parameter names are *case sensitive*. <ul><li>If [`in`](#parameterIn) is `"path"`, the `name` field MUST correspond to the associated path segment from the [path](#pathsPath) field in the [Paths Object](#pathsObject). See [Path Templating](#pathTemplating) for further information.<li>For all other cases, the `name` corresponds to the parameter name used based on the [`in`](#parameterIn) property.</ul>
<a name="parameterIn"></a>in | `string` | **Required.** The location of the parameter. Possible values are "query", "header", "path", "formData" or "body".
<a name="parameterDescription"></a>description | `string` | A brief description of the parameter. This could contain examples of use. [GFM syntax](https://guides.github.com/features/mastering-markdown/#GitHub-flavored-markdown) can be used for rich text representation.
<a name="parameterRequired"></a>required | `boolean` | Determines whether this parameter is mandatory. If the parameter is [`in`](#parameterIn) "path", this property is **required** and its value MUST be `true`. Otherwise, the property MAY be included and its default value is `false`.
If [`in`](#parameterIn) is `"body"`:
Field Name | Type | Description
---|:---:|---
<a name="parameterSchema"></a>schema | [Schema Object](#schemaObject) | **Required.** The schema defining the type used for the body parameter.
If [`in`](#parameterIn) is any value other than `"body"`:
Field Name | Type | Description
---|:---:|---
<a name="parameterType"></a>type | `string` | **Required.** The type of the parameter. Since the parameter is not located at the request body, it is limited to simple types (that is, not an object). The value MUST be one of `"string"`, `"number"`, `"integer"`, `"boolean"`, `"array"` or `"file"`. If `type` is `"file"`, the [`consumes`](#operationConsumes) MUST be either `"multipart/form-data"`, `" application/x-www-form-urlencoded"` or both and the parameter MUST be [`in`](#parameterIn) `"formData"`.
<a name="parameterFormat"></a>format | `string` | The extending format for the previously mentioned [`type`](#parameterType). See [Data Type Formats](#dataTypeFormat) for further details.
<a name="parameterAllowEmptyValue"/>allowEmptyValue | `boolean` | Sets the ability to pass empty-valued parameters. This is valid only for either `query` or `formData` parameters and allows you to send a parameter with a name only or an empty value. Default value is `false`.
<a name="parameterItems"></a>items | [Items Object](#itemsObject) | **Required if [`type`](#parameterType) is "array".** Describes the type of items in the array.
<a name="parameterCollectionFormat"></a>collectionFormat | `string` | Determines the format of the array if type array is used. Possible values are: <ul><li>`csv` - comma separated values `foo,bar`. <li>`ssv` - space separated values `foo bar`. <li>`tsv` - tab separated values `foo\tbar`. <li>`pipes` - pipe separated values <code>foo|bar</code>. <li>`multi` - corresponds to multiple parameter instances instead of multiple values for a single instance `foo=bar&foo=baz`. This is valid only for parameters [`in`](#parameterIn) "query" or "formData". </ul> Default value is `csv`.
<a name="parameterDefault"></a>default | * | Declares the value of the parameter that the server will use if none is provided, for example a "count" to control the number of results per page might default to 100 if not supplied by the client in the request. (Note: "default" has no meaning for required parameters.) See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-6.2. Unlike JSON Schema this value MUST conform to the defined [`type`](#parameterType) for this parameter.
<a name="parameterMaximum"></a>maximum | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.2.
<a name="parameterExclusiveMaximum"></a>exclusiveMaximum | `boolean` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.2.
<a name="parameterMinimum"></a>minimum | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.3.
<a name="parameterExclusiveMinimum"></a>exclusiveMinimum | `boolean` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.3.
<a name="parameterMaxLength"></a>maxLength | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.1.
<a name="parameterMinLength"></a>minLength | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.2.
<a name="parameterPattern"></a>pattern | `string` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.3.
<a name="parameterMaxItems"></a>maxItems | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.2.
<a name="parameterMinItems"></a>minItems | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.3.
<a name="parameterUniqueItems"></a>uniqueItems | `boolean` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.4.
<a name="parameterEnum"></a>enum | [*] | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.5.1.
<a name="parameterMultipleOf"></a>multipleOf | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.1.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="parameterExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Parameter Object Examples
###### Body Parameters
A body parameter with a referenced schema definition (normally for a model definition):
```js
{
"name": "user",
"in": "body",
"description": "user to add to the system",
"required": true,
"schema": {
"$ref": "#/definitions/User"
}
}
```
```yaml
name: user
in: body
description: user to add to the system
required: true
schema:
$ref: '#/definitions/User'
```
A body parameter that is an array of string values:
```js
{
"name": "user",
"in": "body",
"description": "user to add to the system",
"required": true,
"schema": {
"type": "array",
"items": {
"type": "string"
}
}
}
```
```yaml
name: user
in: body
description: user to add to the system
required: true
schema:
type: array
items:
type: string
```
###### Other Parameters
A header parameter with an array of 64 bit integer numbers:
```js
{
"name": "token",
"in": "header",
"description": "token to be passed as a header",
"required": true,
"type": "array",
"items": {
"type": "integer",
"format": "int64"
},
"collectionFormat": "csv"
}
```
```yaml
name: token
in: header
description: token to be passed as a header
required: true
type: array
items:
type: integer
format: int64
collectionFormat: csv
```
A path parameter of a string value:
```js
{
"name": "username",
"in": "path",
"description": "username to fetch",
"required": true,
"type": "string"
}
```
```yaml
name: username
in: path
description: username to fetch
required: true
type: string
```
An optional query parameter of a string value, allowing multiple values by repeating the query parameter:
```js
{
"name": "id",
"in": "query",
"description": "ID of the object to fetch",
"required": false,
"type": "array",
"items": {
"type": "string"
},
"collectionFormat": "multi"
}
```
```yaml
name: id
in: query
description: ID of the object to fetch
required: false
type: array
items:
type: string
collectionFormat: multi
```
A form data with file type for a file upload:
```js
{
"name": "avatar",
"in": "formData",
"description": "The avatar of the user",
"required": true,
"type": "file"
}
```
```yaml
name: avatar
in: formData
description: The avatar of the user
required: true
type: file
```
#### <a name="itemsObject"></a>Items Object
A limited subset of JSON-Schema's items object. It is used by parameter definitions that are not located [`in`](#parameterIn) `"body"`.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="itemsType"></a>type | `string` | **Required.** The internal type of the array. The value MUST be one of `"string"`, `"number"`, `"integer"`, `"boolean"`, or `"array"`. Files and models are not allowed.
<a name="itemsFormat"></a>format | `string` | The extending format for the previously mentioned [`type`](#parameterType). See [Data Type Formats](#dataTypeFormat) for further details.
<a name="itemsItems"></a>items | [Items Object](#itemsObject) | **Required if [`type`](#itemsType) is "array".** Describes the type of items in the array.
<a name="itemsCollectionFormat"></a>collectionFormat | `string` | Determines the format of the array if type array is used. Possible values are: <ul><li>`csv` - comma separated values `foo,bar`. <li>`ssv` - space separated values `foo bar`. <li>`tsv` - tab separated values `foo\tbar`. <li>`pipes` - pipe separated values <code>foo|bar</code>. </ul> Default value is `csv`.
<a name="itemsDefault"></a>default | * | Declares the value of the item that the server will use if none is provided. (Note: "default" has no meaning for required items.) See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-6.2. Unlike JSON Schema this value MUST conform to the defined [`type`](#itemsType) for the data type.
<a name="itemsMaximum"></a>maximum | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.2.
<a name="itemsMaximum"></a>exclusiveMaximum | `boolean` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.2.
<a name="itemsMinimum"></a>minimum | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.3.
<a name="itemsExclusiveMinimum"></a>exclusiveMinimum | `boolean` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.3.
<a name="itemsMaxLength"></a>maxLength | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.1.
<a name="itemsMinLength"></a>minLength | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.2.
<a name="itemsPattern"></a>pattern | `string` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.3.
<a name="itemsMaxItems"></a>maxItems | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.2.
<a name="itemsMinItems"></a>minItems | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.3.
<a name="itemsUniqueItems"></a>uniqueItems | `boolean` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.4.
<a name="itemsEnum"></a>enum | [*] | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.5.1.
<a name="itemsMultipleOf"></a>multipleOf | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.1.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="itemsExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Items Object Examples
Items must be of type string and have the minimum length of 2 characters:
```js
{
"type": "string",
"minLength": 2
}
```
```yaml
type: string
minLength: 2
```
An array of arrays, the internal array being of type integer, numbers must be between 0 and 63 (inclusive):
```js
{
"type": "array",
"items": {
"type": "integer",
"minimum": 0,
"maximum": 63
}
}
```
```yaml
type: array
items:
type: integer
minimum: 0
maximum: 63
```
#### <a name="responsesObject"></a>Responses Object
A container for the expected responses of an operation. The container maps a HTTP response code to the expected response. It is not expected from the documentation to necessarily cover all possible HTTP response codes, since they may not be known in advance. However, it is expected from the documentation to cover a successful operation response and any known errors.
The `default` can be used as the default response object for all HTTP codes that are not covered individually by the specification.
The `Responses Object` MUST contain at least one response code, and it SHOULD be the response for a successful operation call.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="responsesDefault"></a>default | [Response Object](#responseObject) \| [Reference Object](#referenceObject) | The documentation of responses other than the ones declared for specific HTTP response codes. It can be used to cover undeclared responses. [Reference Object](#referenceObject) can be used to link to a response that is defined at the [Swagger Object's responses](#swaggerResponses) section.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="responsesCode"></a>{[HTTP Status Code](#httpCodes)} | [Response Object](#responseObject) \| [Reference Object](#referenceObject) | Any [HTTP status code](#httpCodes) can be used as the property name (one property per HTTP status code). Describes the expected response for that HTTP status code. [Reference Object](#referenceObject) can be used to link to a response that is defined at the [Swagger Object's responses](#swaggerResponses) section.
<a name="responsesExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Responses Object Example
A 200 response for successful operation and a default response for others (implying an error):
```js
{
"200": {
"description": "a pet to be returned",
"schema": {
"$ref": "#/definitions/Pet"
}
},
"default": {
"description": "Unexpected error",
"schema": {
"$ref": "#/definitions/ErrorModel"
}
}
}
```
```yaml
'200':
description: a pet to be returned
schema:
$ref: '#/definitions/Pet'
default:
description: Unexpected error
schema:
$ref: '#/definitions/ErrorModel'
```
#### <a name="responseObject"></a>Response Object
Describes a single response from an API Operation.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="responseDescription"></a>description | `string` | **Required.** A short description of the response. [GFM syntax](https://guides.github.com/features/mastering-markdown/#GitHub-flavored-markdown) can be used for rich text representation.
<a name="responseSchema"></a>schema | [Schema Object](#schemaObject) | A definition of the response structure. It can be a primitive, an array or an object. If this field does not exist, it means no content is returned as part of the response. As an extension to the [Schema Object](#schemaObject), its root `type` value may also be `"file"`. This SHOULD be accompanied by a relevant `produces` mime-type.
<a name="responseHeaders"></a>headers | [Headers Object](#headersObject) | A list of headers that are sent with the response.
<a name="responseExamples"></a>examples | [Example Object](#exampleObject) | An example of the response message.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="responseExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Response Object Examples
Response of an array of a complex type:
```js
{
"description": "A complex object array response",
"schema": {
"type": "array",
"items": {
"$ref": "#/definitions/VeryComplexType"
}
}
}
```
```yaml
description: A complex object array response
schema:
type: array
items:
$ref: '#/definitions/VeryComplexType'
```
Response with a string type:
```js
{
"description": "A simple string response",
"schema": {
"type": "string"
}
}
```
```yaml
description: A simple string response
schema:
type: string
```
Response with headers:
```js
{
"description": "A simple string response",
"schema": {
"type": "string"
},
"headers": {
"X-Rate-Limit-Limit": {
"description": "The number of allowed requests in the current period",
"type": "integer"
},
"X-Rate-Limit-Remaining": {
"description": "The number of remaining requests in the current period",
"type": "integer"
},
"X-Rate-Limit-Reset": {
"description": "The number of seconds left in the current period",
"type": "integer"
}
}
}
```
```yaml
description: A simple string response
schema:
type: string
headers:
X-Rate-Limit-Limit:
description: The number of allowed requests in the current period
type: integer
X-Rate-Limit-Remaining:
description: The number of remaining requests in the current period
type: integer
X-Rate-Limit-Reset:
description: The number of seconds left in the current period
type: integer
```
Response with no return value:
```js
{
"description": "object created"
}
```
```yaml
description: object created
```
#### <a name="headersObject"></a>Headers Object
Lists the headers that can be sent as part of a response.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="headersName"></a>{name} | [Header Object](#headerObject) | The name of the property corresponds to the name of the header. The value describes the type of the header.
##### Headers Object Example
Rate-limit headers:
```js
{
"X-Rate-Limit-Limit": {
"description": "The number of allowed requests in the current period",
"type": "integer"
},
"X-Rate-Limit-Remaining": {
"description": "The number of remaining requests in the current period",
"type": "integer"
},
"X-Rate-Limit-Reset": {
"description": "The number of seconds left in the current period",
"type": "integer"
}
}
```
```yaml
X-Rate-Limit-Limit:
description: The number of allowed requests in the current period
type: integer
X-Rate-Limit-Remaining:
description: The number of remaining requests in the current period
type: integer
X-Rate-Limit-Reset:
description: The number of seconds left in the current period
type: integer
```
#### <a name="exampleObject"></a>Example Object
Allows sharing examples for operation responses.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="exampleMimeType"></a>{[mime type](#mimeTypes)} | Any | The name of the property MUST be one of the Operation `produces` values (either implicit or inherited). The value SHOULD be an example of what such a response would look like.
##### Example Object Example
Example response for application/json mimetype of a Pet data type:
```js
{
"application/json": {
"name": "Puma",
"type": "Dog",
"color": "Black",
"gender": "Female",
"breed": "Mixed"
}
}
```
```yaml
application/json:
name: Puma
type: Dog
color: Black
gender: Female
breed: Mixed
```
#### <a name="headerObject"></a>Header Object
Field Name | Type | Description
---|:---:|---
<a name="headerDescription"></a>description | `string` | A short description of the header.
<a name="headerType"></a>type | `string` | **Required.** The type of the object. The value MUST be one of `"string"`, `"number"`, `"integer"`, `"boolean"`, or `"array"`.
<a name="headerFormat"></a>format | `string` | The extending format for the previously mentioned [`type`](#stType). See [Data Type Formats](#dataTypeFormat) for further details.
<a name="headerItems"></a>items | [Items Object](#itemsObject) | **Required if [`type`](#stType) is "array".** Describes the type of items in the array.
<a name="headerCollectionFormat"></a>collectionFormat | `string` | Determines the format of the array if type array is used. Possible values are: <ul><li>`csv` - comma separated values `foo,bar`. <li>`ssv` - space separated values `foo bar`. <li>`tsv` - tab separated values `foo\tbar`. <li>`pipes` - pipe separated values <code>foo|bar</code>. </ul> Default value is `csv`.
<a name="headerDefault"></a>default | * | Declares the value of the header that the server will use if none is provided. (Note: "default" has no meaning for required headers.) See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-6.2. Unlike JSON Schema this value MUST conform to the defined [`type`](#headerDefault) for the header.
<a name="headerMaximum"></a>maximum | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.2.
<a name="headerMaximum"></a>exclusiveMaximum | `boolean` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.2.
<a name="headerMinimum"></a>minimum | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.3.
<a name="headerExclusiveMinimum"></a>exclusiveMinimum | `boolean` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.3.
<a name="headerMaxLength"></a>maxLength | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.1.
<a name="headerMinLength"></a>minLength | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.2.
<a name="headerPattern"></a>pattern | `string` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.3.
<a name="headerMaxItems"></a>maxItems | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.2.
<a name="headerMinItems"></a>minItems | `integer` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.3.
<a name="headerUniqueItems"></a>uniqueItems | `boolean` | https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.4.
<a name="headerEnum"></a>enum | [*] | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.5.1.
<a name="headerMultipleOf"></a>multipleOf | `number` | See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.1.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="headerExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Header Object Example
A simple header with of an integer type:
```js
{
"description": "The number of allowed requests in the current period",
"type": "integer"
}
```
```yaml
description: The number of allowed requests in the current period
type: integer
```
#### <a name="tagObject"></a>Tag Object
Allows adding meta data to a single tag that is used by the [Operation Object](#operationObject). It is not mandatory to have a Tag Object per tag used there.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="tagName"></a>name | `string` | **Required.** The name of the tag.
<a name="tagDescription"></a>description | `string` | A short description for the tag. [GFM syntax](https://guides.github.com/features/mastering-markdown/#GitHub-flavored-markdown) can be used for rich text representation.
<a name="tagExternalDocs"></a>externalDocs | [External Documentation Object](#externalDocumentationObject) | Additional external documentation for this tag.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="tagExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Tag Object Example
```js
{
"name": "pet",
"description": "Pets operations"
}
```
```yaml
name: pet
description: Pets operations
```
#### <a name="referenceObject"></a>Reference Object
A simple object to allow referencing other definitions in the specification. It can be used to reference parameters and responses that are defined at the top level for reuse.
The Reference Object is a [JSON Reference](http://tools.ietf.org/html/draft-pbryan-zyp-json-ref-02) that uses a [JSON Pointer](http://tools.ietf.org/html/rfc6901) as its value. For this specification, only [canonical dereferencing](https://tools.ietf.org/html/draft-zyp-json-schema-04#section-7.2.3) is supported.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="referenceRef"></a>$ref | `string` | **Required.** The reference string.
##### Reference Object Example
```js
{
"$ref": "#/definitions/Pet"
}
```
```yaml
$ref: '#/definitions/Pet'
```
##### Relative Schema File Example
```js
{
"$ref": "Pet.json"
}
```
```yaml
$ref: 'Pet.yaml'
```
##### Relative Files With Embedded Schema Example
```js
{
"$ref": "definitions.json#/Pet"
}
```
```yaml
$ref: 'definitions.yaml#/Pet'
```
#### <a name="schemaObject"></a>Schema Object
The Schema Object allows the definition of input and output data types. These types can be objects, but also primitives and arrays. This object is based on the [JSON Schema Specification Draft 4](http://json-schema.org/) and uses a predefined subset of it. On top of this subset, there are extensions provided by this specification to allow for more complete documentation.
Further information about the properties can be found in [JSON Schema Core](https://tools.ietf.org/html/draft-zyp-json-schema-04) and [JSON Schema Validation](https://tools.ietf.org/html/draft-fge-json-schema-validation-00). Unless stated otherwise, the property definitions follow the JSON Schema specification as referenced here.
The following properties are taken directly from the JSON Schema definition and follow the same specifications:
- $ref - As a [JSON Reference](https://tools.ietf.org/html/draft-pbryan-zyp-json-ref-03)
- format (See [Data Type Formats](#dataTypeFormat) for further details)
- title
- description ([GFM syntax](https://guides.github.com/features/mastering-markdown/#GitHub-flavored-markdown) can be used for rich text representation)
- default (Unlike JSON Schema, the value MUST conform to the defined type for the Schema Object)
- multipleOf
- maximum
- exclusiveMaximum
- minimum
- exclusiveMinimum
- maxLength
- minLength
- pattern
- maxItems
- minItems
- uniqueItems
- maxProperties
- minProperties
- required
- enum
- type
The following properties are taken from the JSON Schema definition but their definitions were adjusted to the Swagger Specification. Their definition is the same as the one from JSON Schema, only where the original definition references the JSON Schema definition, the [Schema Object](#schemaObject) definition is used instead.
- items
- allOf
- properties
- additionalProperties
Other than the JSON Schema subset fields, the following fields may be used for further schema documentation.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="schemaDiscriminator"></a>discriminator | `string` | Adds support for polymorphism. The discriminator is the schema property name that is used to differentiate between other schema that inherit this schema. The property name used MUST be defined at this schema and it MUST be in the `required` property list. When used, the value MUST be the name of this schema or any schema that inherits it.
<a name="schemaReadOnly"></a>readOnly | `boolean` | Relevant only for Schema `"properties"` definitions. Declares the property as "read only". This means that it MAY be sent as part of a response but MUST NOT be sent as part of the request. Properties marked as `readOnly` being `true` SHOULD NOT be in the `required` list of the defined schema. Default value is `false`.
<a name="schemaXml"></a>xml | [XML Object](#xmlObject) | This MAY be used only on properties schemas. It has no effect on root schemas. Adds Additional metadata to describe the XML representation format of this property.
<a name="schemaExternalDocs"></a>externalDocs | [External Documentation Object](#externalDocumentationObject) | Additional external documentation for this schema.
<a name="schemaExample"></a>example | Any | A free-form property to include an example of an instance for this schema.
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="schemaExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
###### Composition and Inheritance (Polymorphism)
Swagger allows combining and extending model definitions using the `allOf` property of JSON Schema, in effect offering model composition. `allOf` takes in an array of object definitions that are validated *independently* but together compose a single object.
While composition offers model extensibility, it does not imply a hierarchy between the models. To support polymorphism, Swagger adds the support of the `discriminator` field. When used, the `discriminator` will be the name of the property used to decide which schema definition is used to validate the structure of the model. As such, the `discriminator` field MUST be a required field. The value of the chosen property has to be the friendly name given to the model under the `definitions` property. As such, inline schema definitions, which do not have a given id, *cannot* be used in polymorphism.
###### XML Modeling
The [xml](#schemaXml) property allows extra definitions when translating the JSON definition to XML. The [XML Object](#xmlObject) contains additional information about the available options.
##### Schema Object Examples
###### Primitive Sample
Unlike previous versions of Swagger, Schema definitions can be used to describe primitive and arrays as well.
```js
{
"type": "string",
"format": "email"
}
```
```yaml
type: string
format: email
```
###### Simple Model
```js
{
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string"
},
"address": {
"$ref": "#/definitions/Address"
},
"age": {
"type": "integer",
"format": "int32",
"minimum": 0
}
}
}
```
```yaml
type: object
required:
- name
properties:
name:
type: string
address:
$ref: '#/definitions/Address'
age:
type: integer
format: int32
minimum: 0
```
###### Model with Map/Dictionary Properties
For a simple string to string mapping:
```js
{
"type": "object",
"additionalProperties": {
"type": "string"
}
}
```
```yaml
type: object
additionalProperties:
type: string
```
For a string to model mapping:
```js
{
"type": "object",
"additionalProperties": {
"$ref": "#/definitions/ComplexModel"
}
}
```
```yaml
type: object
additionalProperties:
$ref: '#/definitions/ComplexModel'
```
###### Model with Example
```js
{
"type": "object",
"properties": {
"id": {
"type": "integer",
"format": "int64"
},
"name": {
"type": "string"
}
},
"required": [
"name"
],
"example": {
"name": "Puma",
"id": 1
}
}
```
```yaml
type: object
properties:
id:
type: integer
format: int64
name:
type: string
required:
- name
example:
name: Puma
id: 1
```
###### Models with Composition
```js
{
"definitions": {
"ErrorModel": {
"type": "object",
"required": [
"message",
"code"
],
"properties": {
"message": {
"type": "string"
},
"code": {
"type": "integer",
"minimum": 100,
"maximum": 600
}
}
},
"ExtendedErrorModel": {
"allOf": [
{
"$ref": "#/definitions/ErrorModel"
},
{
"type": "object",
"required": [
"rootCause"
],
"properties": {
"rootCause": {
"type": "string"
}
}
}
]
}
}
}
```
```yaml
definitions:
ErrorModel:
type: object
required:
- message
- code
properties:
message:
type: string
code:
type: integer
minimum: 100
maximum: 600
ExtendedErrorModel:
allOf:
- $ref: '#/definitions/ErrorModel'
- type: object
required:
- rootCause
properties:
rootCause:
type: string
```
###### Models with Polymorphism Support
```js
{
"definitions": {
"Pet": {
"type": "object",
"discriminator": "petType",
"properties": {
"name": {
"type": "string"
},
"petType": {
"type": "string"
}
},
"required": [
"name",
"petType"
]
},
"Cat": {
"description": "A representation of a cat",
"allOf": [
{
"$ref": "#/definitions/Pet"
},
{
"type": "object",
"properties": {
"huntingSkill": {
"type": "string",
"description": "The measured skill for hunting",
"default": "lazy",
"enum": [
"clueless",
"lazy",
"adventurous",
"aggressive"
]
}
},
"required": [
"huntingSkill"
]
}
]
},
"Dog": {
"description": "A representation of a dog",
"allOf": [
{
"$ref": "#/definitions/Pet"
},
{
"type": "object",
"properties": {
"packSize": {
"type": "integer",
"format": "int32",
"description": "the size of the pack the dog is from",
"default": 0,
"minimum": 0
}
},
"required": [
"packSize"
]
}
]
}
}
}
```
```yaml
definitions:
Pet:
type: object
discriminator: petType
properties:
name:
type: string
petType:
type: string
required:
- name
- petType
Cat:
description: A representation of a cat
allOf:
- $ref: '#/definitions/Pet'
- type: object
properties:
huntingSkill:
type: string
description: The measured skill for hunting
default: lazy
enum:
- clueless
- lazy
- adventurous
- aggressive
required:
- huntingSkill
Dog:
description: A representation of a dog
allOf:
- $ref: '#/definitions/Pet'
- type: object
properties:
packSize:
type: integer
format: int32
description: the size of the pack the dog is from
default: 0
minimum: 0
required:
- packSize
```
#### <a name="xmlObject"></a>XML Object
A metadata object that allows for more fine-tuned XML model definitions.
When using arrays, XML element names are *not* inferred (for singular/plural forms) and the `name` property should be used to add that information. See examples for expected behavior.
##### Fixed Fields
Field Name | Type | Description
---|:---:|---
<a name="xmlName"></a>name | `string` | Replaces the name of the element/attribute used for the described schema property. When defined within the Items Object (`items`), it will affect the name of the individual XML elements within the list. When defined alongside `type` being `array` (outside the `items`), it will affect the wrapping element and only if `wrapped` is `true`. If `wrapped` is `false`, it will be ignored.
<a name="xmlNamespace"></a>namespace | `string` | The URL of the namespace definition. Value SHOULD be in the form of a URL.
<a name="xmlPrefix"></a>prefix | `string` | The prefix to be used for the [name](#xmlName).
<a name="xmlAttribute"></a>attribute | `boolean` | Declares whether the property definition translates to an attribute instead of an element. Default value is `false`.
<a name="xmlWrapped"></a>wrapped | `boolean` | MAY be used only for an array definition. Signifies whether the array is wrapped (for example, `<books><book/><book/></books>`) or unwrapped (`<book/><book/>`). Default value is `false`. The definition takes effect only when defined alongside `type` being `array` (outside the `items`).
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="xmlExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### XML Object Examples
The examples of the XML object definitions are included inside a property definition of a [Schema Object](#schemaObject) with a sample of the XML representation of it.
###### No XML Element
Basic string property:
```js
{
"animals": {
"type": "string"
}
}
```
```yaml
animals:
type: string
```
```xml
<animals>...</animals>
```
Basic string array property ([`wrapped`](#xmlWrapped) is `false` by default):
```js
{
"animals": {
"type": "array",
"items": {
"type": "string"
}
}
}
```
```yaml
animals:
type: array
items:
type: string
```
```xml
<animals>...</animals>
<animals>...</animals>
<animals>...</animals>
```
###### XML Name Replacement
```js
{
"animals": {
"type": "string",
"xml": {
"name": "animal"
}
}
}
```
```yaml
animals:
type: string
xml:
name: animal
```
```xml
<animal>...</animal>
```
###### XML Attribute, Prefix and Namespace
In this example, a full model definition is shown.
```js
{
"Person": {
"type": "object",
"properties": {
"id": {
"type": "integer",
"format": "int32",
"xml": {
"attribute": true
}
},
"name": {
"type": "string",
"xml": {
"namespace": "http://swagger.io/schema/sample",
"prefix": "sample"
}
}
}
}
}
```
```yaml
Person:
type: object
properties:
id:
type: integer
format: int32
xml:
attribute: true
name:
type: string
xml:
namespace: http://swagger.io/schema/sample
prefix: sample
```
```xml
<Person id="123">
<sample:name xmlns:sample="http://swagger.io/schema/sample">example</sample:name>
</Person>
```
###### XML Arrays
Changing the element names:
```js
{
"animals": {
"type": "array",
"items": {
"type": "string",
"xml": {
"name": "animal"
}
}
}
}
```
```yaml
animals:
type: array
items:
type: string
xml:
name: animal
```
```xml
<animal>value</animal>
<animal>value</animal>
```
The external `name` property has no effect on the XML:
```js
{
"animals": {
"type": "array",
"items": {
"type": "string",
"xml": {
"name": "animal"
}
},
"xml": {
"name": "aliens"
}
}
}
```
```yaml
animals:
type: array
items:
type: string
xml:
name: animal
xml:
name: aliens
```
```xml
<animal>value</animal>
<animal>value</animal>
```
Even when the array is wrapped, if no name is explicitly defined, the same name will be used both internally and externally:
```js
{
"animals": {
"type": "array",
"items": {
"type": "string"
},
"xml": {
"wrapped": true
}
}
}
```
```yaml
animals:
type: array
items:
type: string
xml:
wrapped: true
```
```xml
<animals>
<animals>value</animals>
<animals>value</animals>
</animals>
```
To overcome the above example, the following definition can be used:
```js
{
"animals": {
"type": "array",
"items": {
"type": "string",
"xml": {
"name": "animal"
}
},
"xml": {
"wrapped": true
}
}
}
```
```yaml
animals:
type: array
items:
type: string
xml:
name: animal
xml:
wrapped: true
```
```xml
<animals>
<animal>value</animal>
<animal>value</animal>
</animals>
```
Affecting both internal and external names:
```js
{
"animals": {
"type": "array",
"items": {
"type": "string",
"xml": {
"name": "animal"
}
},
"xml": {
"name": "aliens",
"wrapped": true
}
}
}
```
```yaml
animals:
type: array
items:
type: string
xml:
name: animal
xml:
name: aliens
wrapped: true
```
```xml
<aliens>
<animal>value</animal>
<animal>value</animal>
</aliens>
```
If we change the external element but not the internal ones:
```js
{
"animals": {
"type": "array",
"items": {
"type": "string"
},
"xml": {
"name": "aliens",
"wrapped": true
}
}
}
```
```yaml
animals:
type: array
items:
type: string
xml:
name: aliens
wrapped: true
```
```xml
<aliens>
<aliens>value</aliens>
<aliens>value</aliens>
</aliens>
```
#### <a name="definitionsObject"></a>Definitions Object
An object to hold data types that can be consumed and produced by operations. These data types can be primitives, arrays or models.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="definitionsName"></a>{name} | [Schema Object](#schemaObject) | A single definition, mapping a "name" to the schema it defines.
##### Definitions Object Example
```js
{
"Category": {
"type": "object",
"properties": {
"id": {
"type": "integer",
"format": "int64"
},
"name": {
"type": "string"
}
}
},
"Tag": {
"type": "object",
"properties": {
"id": {
"type": "integer",
"format": "int64"
},
"name": {
"type": "string"
}
}
}
}
```
```yaml
Category:
type: object
properties:
id:
type: integer
format: int64
name:
type: string
Tag:
type: object
properties:
id:
type: integer
format: int64
name:
type: string
```
#### <a name="parametersDefinitionsObject"></a>Parameters Definitions Object
An object to hold parameters to be reused across operations. Parameter definitions can be referenced to the ones defined here.
This does *not* define global operation parameters.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="pdName"></a>{name} | [Parameter Object](#parameterObject) | A single parameter definition, mapping a "name" to the parameter it defines.
##### Parameters Definition Object Example
```js
{
"skipParam": {
"name": "skip",
"in": "query",
"description": "number of items to skip",
"required": true,
"type": "integer",
"format": "int32"
},
"limitParam": {
"name": "limit",
"in": "query",
"description": "max records to return",
"required": true,
"type": "integer",
"format": "int32"
}
}
```
```yaml
skipParam:
name: skip
in: query
description: number of items to skip
required: true
type: integer
format: int32
limitParam:
name: limit
in: query
description: max records to return
required: true
type: integer
format: int32
```
#### <a name="responsesDefinitionsObject"></a>Responses Definitions Object
An object to hold responses to be reused across operations. Response definitions can be referenced to the ones defined here.
This does *not* define global operation responses.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="rdName"></a>{name} | [Response Object](#responseObject) | A single response definition, mapping a "name" to the response it defines.
##### Responses Definitions Object Example
```js
{
"NotFound": {
"description": "Entity not found."
},
"IllegalInput": {
"description": "Illegal input for operation."
},
"GeneralError": {
"description": "General Error",
"schema": {
"$ref": "#/definitions/GeneralError"
}
}
}
```
```yaml
NotFound:
description: Entity not found.
IllegalInput:
description: Illegal input for operation.
GeneralError:
description: General Error
schema:
$ref: '#/definitions/GeneralError'
```
#### <a name="securityDefinitionsObject"></a>Security Definitions Object
A declaration of the security schemes available to be used in the specification. This does not enforce the security schemes on the operations and only serves to provide the relevant details for each scheme.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="sdName"></a>{name} | [Security Scheme Object](#securitySchemeObject) | A single security scheme definition, mapping a "name" to the scheme it defines.
##### Security Definitions Object Example
```js
{
"api_key": {
"type": "apiKey",
"name": "api_key",
"in": "header"
},
"petstore_auth": {
"type": "oauth2",
"authorizationUrl": "http://swagger.io/api/oauth/dialog",
"flow": "implicit",
"scopes": {
"write:pets": "modify pets in your account",
"read:pets": "read your pets"
}
}
}
```
```yaml
api_key:
type: apiKey
name: api_key
in: header
petstore_auth:
type: oauth2
authorizationUrl: http://swagger.io/api/oauth/dialog
flow: implicit
scopes:
write:pets: modify pets in your account
read:pets: read your pets
```
#### <a name="securitySchemeObject"></a>Security Scheme Object
Allows the definition of a security scheme that can be used by the operations. Supported schemes are basic authentication, an API key (either as a header or as a query parameter) and OAuth2's common flows (implicit, password, application and access code).
##### Fixed Fields
Field Name | Type | Validity | Description
---|:---:|---|---
<a name="securitySchemeType"></a>type | `string` | Any | **Required.** The type of the security scheme. Valid values are `"basic"`, `"apiKey"` or `"oauth2"`.
<a name="securitySchemeDescription"></a>description | `string` | Any | A short description for security scheme.
<a name="securitySchemeName"></a>name | `string` | `apiKey` | **Required.** The name of the header or query parameter to be used.
<a name="securitySchemeIn"></a>in | `string` | `apiKey` | **Required** The location of the API key. Valid values are `"query"` or `"header"`.
<a name="securitySchemeFlow"></a>flow | `string` | `oauth2` | **Required.** The flow used by the OAuth2 security scheme. Valid values are `"implicit"`, `"password"`, `"application"` or `"accessCode"`.
<a name="securitySchemeAuthorizationUrl"></a>authorizationUrl | `string` | `oauth2` (`"implicit"`, `"accessCode"`) | **Required.** The authorization URL to be used for this flow. This SHOULD be in the form of a URL.
<a name="securitySchemeTokenUrl"></a>tokenUrl | `string` | `oauth2` (`"password"`, `"application"`, `"accessCode"`) | **Required.** The token URL to be used for this flow. This SHOULD be in the form of a URL.
<a name="securitySchemeScopes"></a>scopes | [Scopes Object](#scopesObject) | `oauth2` | **Required.** The available scopes for the OAuth2 security scheme.
##### Patterned Fields
Field Name | Type | Description
---|:---:|---
<a name="securitySchemeExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Security Scheme Object Example
###### Basic Authentication Sample
```js
{
"type": "basic"
}
```
```yaml
type: basic
```
###### API Key Sample
```js
{
"type": "apiKey",
"name": "api_key",
"in": "header"
}
```
```yaml
type: apiKey
name: api_key
in: header
```
###### Implicit OAuth2 Sample
```js
{
"type": "oauth2",
"authorizationUrl": "http://swagger.io/api/oauth/dialog",
"flow": "implicit",
"scopes": {
"write:pets": "modify pets in your account",
"read:pets": "read your pets"
}
}
```
```yaml
type: oauth2
authorizationUrl: http://swagger.io/api/oauth/dialog
flow: implicit
scopes:
write:pets: modify pets in your account
read:pets: read your pets
```
#### <a name="scopesObject"></a>Scopes Object
Lists the available scopes for an OAuth2 security scheme.
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="scopesName"></a>{name} | `string` | Maps between a name of a scope to a short description of it (as the value of the property).
##### Patterned Objects
Field Pattern | Type | Description
---|:---:|---
<a name="scopesExtensions"></a>^x- | Any | Allows extensions to the Swagger Schema. The field name MUST begin with `x-`, for example, `x-internal-id`. The value can be `null`, a primitive, an array or an object. See [Vendor Extensions](#vendorExtensions) for further details.
##### Scopes Object Example
```js
{
"write:pets": "modify pets in your account",
"read:pets": "read your pets"
}
```
```yaml
write:pets: modify pets in your account
read:pets: read your pets
```
#### <a name="securityRequirementObject"></a>Security Requirement Object
Lists the required security schemes to execute this operation. The object can have multiple security schemes declared in it which are all required (that is, there is a logical AND between the schemes).
The name used for each property MUST correspond to a security scheme declared in the [Security Definitions](#securityDefinitionsObject).
##### Patterned Fields
Field Pattern | Type | Description
---|:---:|---
<a name="securityRequirementsName"></a>{name} | [`string`] | Each name must correspond to a security scheme which is declared in the [Security Definitions](#securityDefinitions). If the security scheme is of type `"oauth2"`, then the value is a list of scope names required for the execution. For other security scheme types, the array MUST be empty.
##### Security Requirement Object Examples
###### Non-OAuth2 Security Requirement
```js
{
"api_key": []
}
```
```yaml
api_key: []
```
###### OAuth2 Security Requirement
```js
{
"petstore_auth": [
"write:pets",
"read:pets"
]
}
```
```yaml
petstore_auth:
- write:pets
- read:pets
```
### <a name="vendorExtensions"></a>Specification Extensions
While the Swagger Specification tries to accommodate most use cases, additional data can be added to extend the specification at certain points.
The extensions properties are always prefixed by `"x-"` and can have any valid JSON format value.
The extensions may or may not be supported by the available tooling, but those may be extended as well to add requested support (if tools are internal or open-sourced).
### <a name="securityFiltering"></a>Security Filtering
Some objects in the Swagger specification may be declared and remain empty, or completely be removed, even though they are inherently the core of the API documentation.
The reasoning behind it is to allow an additional layer of access control over the documentation itself. While not part of the specification itself, certain libraries may choose to allow access to parts of the documentation based on some form of authentication/authorization.
Two examples for this:
1. The [Paths Object](#pathsObject) may be empty. It may be counterintuitive, but this may tell the viewer that they got to the right place, but can't access any documentation. They'd still have access to the [Info Object](#infoObject) which may contain additional information regarding authentication.
2. The [Path Item Object](#pathItemObject) may be empty. In this case, the viewer will be aware that the path exists, but will not be able to see any of its operations or parameters. This is different than hiding the path itself from the [Paths Object](#pathsObject) so the user will not be aware of its existence. This allows the documentation provider a finer control over what the viewer can see.
|