generated: '2026-08-09'
method: probed
source: https://www.lacuna.fm/.well-known/agent-card.json
discovery:
  path: /.well-known/agent-card.json
  canonical: true
  host: www.lacuna.fm
conformance:
  spec: A2A 1.0.0
  grade: flavored
  protocol_version: 0.3.0
  preferred_transport: JSONRPC
  checks:
    capabilities_is_object: true
    protocol_version_present: true
    skills_is_array: true
    preferred_transport_present: true
    default_input_modes_present: true
    default_output_modes_present: true
  deviations:
    - id: supportedInterfaces-instead-of-additionalInterfaces
      detail: >-
        The card declares `supportedInterfaces[]` rather than the A2A 1.0.0 `additionalInterfaces[]`
        key. Both entries point at the same https://www.lacuna.fm/a2a URL, advertising JSONRPC
        protocolVersion 1.0 and 0.3 — a deliberate dual-dialect posture the August 9 changelog
        describes as "an A2A endpoint answering both dialects currently in circulation".
    - id: securityRequirements-shape
      detail: >-
        `securityRequirements[]` uses a nested `{schemes: {name: {list: [...]}}}` shape rather than the
        A2A/OpenAPI-style `security[]` array of `{schemeName: [scopes]}` objects.
  note: >-
    Hard checks all pass (capabilities is an object, protocolVersion present, skills is an array) and
    every optional field is populated, so structurally this is one of the stronger cards in the catalog.
    It is graded `flavored` only because of the non-spec interface and security-requirement key names.
card:
  name: Lacuna Music
  description: >-
    Generates original music from a style description and optional lyrics. Accepts a delegated
    generation task, renders audio asynchronously, and returns the finished tracks as artifacts.
  url: https://www.lacuna.fm/a2a
  version: 1.0.0
  documentationUrl: https://www.lacuna.fm/docs/api
  provider:
    organization: JOYLINK LTD
    url: https://www.lacuna.fm
  capabilities:
    streaming: false
    pushNotifications: false
    extendedAgentCard: false
  defaultInputModes:
    - text/plain
    - application/json
  defaultOutputModes:
    - audio/mpeg
    - text/plain
    - image/jpeg
  skills: 1
  skill_ids:
    - generate_music
  security_schemes:
    - oauth2 (authorizationCode + PKCE, 5 scopes)
    - apiKey (http bearer, lyr_live_ developer key)
  file: lacuna-agent-card.json
runtime:
  endpoint: https://www.lacuna.fm/a2a
  transport: JSONRPC
  methods_documented:
    - message/send
    - tasks/get
  anonymous_probe:
    method: message/send
    http_status: 401
    body: 'authentication_error / invalid_api_key'
    note: Auth is required on every A2A method; there is no anonymous tier.
x-evidence:
  fetched: '2026-08-09'
  url: https://www.lacuna.fm/.well-known/agent-card.json
  http_status: 200
  content_type: application/json
  legacy_path_checked:
    url: https://www.lacuna.fm/.well-known/agent.json
    http_status: 404