# Extensions

API extensions management

## List API extensions

> Lists Block Storage API extensions

```json
{"openapi":"3.0.3","info":{"title":"OpenStack Block Storage API (Cinder)","version":"3.71"},"tags":[{"name":"extensions","description":"API extensions management"}],"servers":[{"url":"https://{host}/cinder","description":"PCD Block Storage API v3","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"}},"schemas":{"Extensions":{"type":"object","properties":{"extensions":{"type":"array","items":{"$ref":"#/components/schemas/Extension"}}}},"Extension":{"type":"object","properties":{"alias":{"description":"The alias for the extension","type":"string"},"description":{"description":"The extension description","type":"string"},"links":{"type":"array","items":{"$ref":"#/components/schemas/Link"}},"name":{"description":"The name of the extension","type":"string"},"updated":{"format":"date-time","type":"string"}}},"Link":{"type":"object","properties":{"href":{"format":"uri","type":"string"},"rel":{"type":"string"},"type":{"type":"string"}}}}},"paths":{"/v3/extensions":{"get":{"tags":["extensions"],"responses":{"200":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Extensions"}}},"description":"OK"}},"summary":"List API extensions","description":"Lists Block Storage API extensions"}}}}
```


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