> ## Documentation Index
> Fetch the complete documentation index at: https://impossibl.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Get OAuth protected-resource metadata for agent discovery



## OpenAPI

````yaml /openapi.yaml get /.well-known/oauth-protected-resource
openapi: 3.1.0
info:
  title: Impossibl AI API
  version: 0.0.1
  description: >
    The Impossibl AI API is one API for all AI providers, OpenAI-compatible
    across OpenAI,

    Anthropic, Google, xAI, and more (`GET /v1/models` lists the full catalog),

    billed from a prepaid credit balance.


    Provider usage is billed at provider list prices with no usage markup.

    Prepaid credit purchases charge a separate fixed 5% platform fee before tax.


    **Agent quickstart**

    1. `POST /v1/accounts` — create a funded account; you get an API key and a
       signup-bonus balance in one call (no human step required).
    2. Call `POST /v1/chat/completions`, `POST /v1/responses`, or
       `POST /v1/audio/transcriptions` with
       `Authorization: Bearer <key>` and a `provider/model` id from `GET /v1/models`.
    3. Credits are deducted per request by token or audio-duration usage; check
    `GET /v1/account`.
servers:
  - url: https://api.impossibl.com
    description: Production
  - url: http://localhost:8787
    description: Local dev
security:
  - BearerKey: []
paths:
  /.well-known/oauth-protected-resource:
    get:
      summary: Get OAuth protected-resource metadata for agent discovery
      operationId: getOAuthProtectedResourceMetadata
      responses:
        '200':
          description: Protected resource metadata
          content:
            application/json:
              schema:
                type: object
                properties:
                  resource:
                    type: string
                    format: uri
                  resource_name:
                    type: string
                  resource_logo_uri:
                    type: string
                    format: uri
                  authorization_servers:
                    type: array
                    items:
                      type: string
                      format: uri
                  scopes_supported:
                    type: array
                    items:
                      type: string
                  bearer_methods_supported:
                    type: array
                    items:
                      type: string
                  agent_auth_uri:
                    type: string
                    format: uri
                  agent_auth:
                    type: object
                    properties:
                      skill:
                        type: string
                        format: uri
                      register_uri:
                        type: string
                        format: uri
                      identity_types_supported:
                        type: array
                        items:
                          type: string
                      credential_types_supported:
                        type: array
                        items:
                          type: string
                      credential_format:
                        type: string
      security: []
components:
  securitySchemes:
    BearerKey:
      type: http
      scheme: bearer
      description: Gateway API key (`imp-rt-...`) from POST /v1/accounts or /v1/keys.

````