# Retrieve the OpenAPI document

`GET https://api.cademi.com.br/api/v3/openapi.json`

Operation ID: `openapi.get` · API v3

Returns the latest published release of the API v3 OpenAPI document. Any authenticated credential can retrieve it.

The response includes an `ETag` derived from the document content. Send this value in the `If-None-Match` header to receive `304 Not Modified` when the document has not changed.

## Responses

### 200

Returns the OpenAPI document.

Body: object.

### 304

The document has not changed since the revision identified in the If-None-Match header.

### 401

The credential is missing, malformed, expired, or revoked.

Body: Error.

Full schema: https://cademi.dev/openapi/v3.json