generated: '2026-08-09'
method: searched
source: https://www.lacuna.fm/.well-known/oauth-authorization-server
docs: https://www.lacuna.fm/auth.md
note: >-
  The published OpenAPI declares only `bearerAuth` (http bearer), so no scopes are derivable from the
  spec. The OAuth scope surface is published instead in the RFC 8414 authorization-server metadata, the
  RFC 9728 protected-resource metadata, the A2A agent card, and the MCP server card — all four agree.
schemes:
  - name: oauth2
    source: well-known/lacuna-oauth-authorization-server.json
    flows:
      - flow: authorizationCode
        authorizationUrl: https://www.lacuna.fm/oauth/authorize
        tokenUrl: https://www.lacuna.fm/oauth/token
        code_challenge_methods_supported:
          - S256
scopes:
  - scope: profile
    description: Grants the profile scope — account identity.
    flows: [authorizationCode]
    sources:
      - well-known/lacuna-oauth-authorization-server.json
      - a2a/lacuna-agent-card.json
  - scope: music:generate
    description: >-
      Grants music generation. Required for music generation over REST, MCP and A2A alike
      (scopes_required in both the agent-auth block and the MCP server card).
    required: true
    flows: [authorizationCode]
    sources:
      - well-known/lacuna-oauth-authorization-server.json
      - well-known/lacuna-oauth-protected-resource.json
      - mcp/lacuna-mcp-server-card.json
      - a2a/lacuna-agent-card.json
  - scope: livecoding:agent
    description: Grants the livecoding:agent scope.
    flows: [authorizationCode]
    sources:
      - well-known/lacuna-oauth-authorization-server.json
      - a2a/lacuna-agent-card.json
  - scope: music:agent
    description: Grants the music:agent scope.
    flows: [authorizationCode]
    sources:
      - well-known/lacuna-oauth-authorization-server.json
      - a2a/lacuna-agent-card.json
  - scope: lyrics:agent
    description: Grants the lyrics:agent scope.
    flows: [authorizationCode]
    sources:
      - well-known/lacuna-oauth-authorization-server.json
      - a2a/lacuna-agent-card.json
gaps:
  - >-
    Lacuna publishes scope names but not a scopes/permissions reference page describing what each
    agent scope (livecoding:agent, music:agent, lyrics:agent) actually authorizes. The metadata
    descriptions are self-referential ("Grants the X scope").
x-evidence:
  fetched: '2026-08-09'
  urls:
    - url: https://www.lacuna.fm/.well-known/oauth-authorization-server
      http_status: 200
    - url: https://www.lacuna.fm/.well-known/oauth-protected-resource
      http_status: 200