# Extensions

API extension discovery and details

## List extensions

> Lists available Networking API v2.0 extensions.

```json
{"openapi":"3.0.3","info":{"title":"Networking API","version":"2.0"},"tags":[{"name":"Extensions","description":"API extension discovery and details"}],"servers":[{"url":"https://{host}/neutron","description":"PCD Network API v2.0","variables":{"host":{"default":"example.platform9.com","description":"The PCD controlplane hostname"}}}],"security":[{"pcdAuth":[]}],"components":{"securitySchemes":{"pcdAuth":{"name":"X-Auth-Token","type":"apiKey","in":"header","description":"PCD Identity Service token authentication"}},"parameters":{"Fields":{"name":"fields","description":"The fields that you want the server to return. If no fields are specified, all fields are returned.","schema":{"type":"string"},"in":"query"}},"schemas":{"ExtensionsResponse":{"type":"object","properties":{"extensions":{"type":"array","items":{"$ref":"#/components/schemas/Extension"}}}},"Extension":{"type":"object","properties":{"name":{"type":"string"},"alias":{"type":"string"},"description":{"type":"string"},"updated":{"format":"date-time","type":"string"},"links":{"type":"array","items":{"$ref":"#/components/schemas/Link"}}}},"Link":{"type":"object","properties":{"href":{"format":"uri","type":"string"},"rel":{"type":"string"}}},"Error":{"type":"object","properties":{"error":{"type":"object","properties":{"message":{"type":"string"},"type":{"type":"string"},"detail":{"type":"string"}}}}}},"responses":{"Unauthorized":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Error"}}},"description":"Unauthorized"}}},"paths":{"/v2.0/extensions":{"get":{"tags":["Extensions"],"parameters":[{"$ref":"#/components/parameters/Fields"}],"responses":{"200":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ExtensionsResponse"}}},"description":"Successful operation"},"401":{"$ref":"#/components/responses/Unauthorized"}},"operationId":"listExtensions","summary":"List extensions","description":"Lists available Networking API v2.0 extensions."}}}}
```

## Show extension details

> Shows details for an extension, by alias.

```json
{"openapi":"3.0.3","info":{"title":"Networking API","version":"2.0"},"tags":[{"name":"Extensions","description":"API extension discovery and details"}],"servers":[{"url":"https://{host}/neutron","description":"PCD Network API v2.0","variables":{"host":{"default":"example.platform9.com","description":"The PCD controlplane hostname"}}}],"security":[{"pcdAuth":[]}],"components":{"securitySchemes":{"pcdAuth":{"name":"X-Auth-Token","type":"apiKey","in":"header","description":"PCD Identity Service token authentication"}},"parameters":{"Fields":{"name":"fields","description":"The fields that you want the server to return. If no fields are specified, all fields are returned.","schema":{"type":"string"},"in":"query"}},"schemas":{"ExtensionResponse":{"type":"object","properties":{"extension":{"$ref":"#/components/schemas/Extension"}}},"Extension":{"type":"object","properties":{"name":{"type":"string"},"alias":{"type":"string"},"description":{"type":"string"},"updated":{"format":"date-time","type":"string"},"links":{"type":"array","items":{"$ref":"#/components/schemas/Link"}}}},"Link":{"type":"object","properties":{"href":{"format":"uri","type":"string"},"rel":{"type":"string"}}},"Error":{"type":"object","properties":{"error":{"type":"object","properties":{"message":{"type":"string"},"type":{"type":"string"},"detail":{"type":"string"}}}}}},"responses":{"Unauthorized":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Error"}}},"description":"Unauthorized"},"NotFound":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Error"}}},"description":"Not Found"}}},"paths":{"/v2.0/extensions/{alias}":{"get":{"tags":["Extensions"],"parameters":[{"name":"alias","description":"The alias of an extension.","schema":{"type":"string"},"in":"path","required":true},{"$ref":"#/components/parameters/Fields"}],"responses":{"200":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ExtensionResponse"}}},"description":"Successful operation"},"401":{"$ref":"#/components/responses/Unauthorized"},"404":{"$ref":"#/components/responses/NotFound"}},"operationId":"showExtension","summary":"Show extension details","description":"Shows details for an extension, by alias."}}}}
```