Marketo Authentication

generated: '2026-08-13'
method: searched
source: openapi/marketo-identity-openapi-original.json
docs: https://experienceleague.adobe.com/en/docs/marketo-developer/marketo/rest/authentication
note: >-
  The five OpenAPI/Swagger documents Adobe publishes for Marketo Engage
  (AdobeDocs/marketo-apis static/swagger-*.json) declare NO securityDefinitions
  and NO components.securitySchemes at all, so
  0-working/derive-authentication.py returns zero profiles for this provider.
  Everything below is read from the provider's own authentication reference and
  from the Identity spec's single documented operation, not derived.
summary:
  types: [oauth2]
  api_key_in: []
  oauth2_flows: [clientCredentials]
  spec_declares_security: false
  token_transport: Authorization Bearer header
model:
  standard: OAuth 2.0 (RFC 6749) — two-legged client credentials
  identity_endpoint: https://{munchkinId}.mktorest.com/identity/oauth/token
  identity_endpoint_note: >-
    The Identity URL is per-subscription and is read from
    Admin > Integration > Web Services inside the Marketo instance. It shares the
    Munchkin-ID host with the REST base URL.
  operations:
    - identityUsingGET
    - identityUsingPOST
  request: >-
    GET|POST <Identity URL>/oauth/token?grant_type=client_credentials
    &client_id=<Client Id>&client_secret=<Client Secret>
  credentials:
    client_id: Issued by a LaunchPoint Custom Service (Admin > Integration > LaunchPoint > View Details)
    client_secret: Issued by the same Custom Service
    owner: >-
      Every Custom Service is scoped to exactly one API-Only user. The service
      inherits that user's role permissions; see scopes/marketo-scopes.yml.
  token:
    type: bearer
    lifetime_seconds: 3600
    scope_field: >-
      The `scope` member of the token response carries the EMAIL ADDRESS of the
      API-Only user that owns the custom service (e.g. "apis@acmeinc.com"). It is
      an identity claim, not an OAuth permission scope. Marketo has no OAuth
      scope vocabulary — authorization is role-permission based.
    independence: >-
      An access token belongs to a single custom service; its expiry is
      independent of tokens issued to other custom services in the same instance.
  usage:
    header: 'Authorization: Bearer <access_token>'
    deprecated_transport:
      form: access_token query parameter / form parameter
      status: deprecated
      removal_date: '2026-08-31'
      source: https://experienceleague.adobe.com/en/docs/marketo-developer/marketo/rest/authentication
      note: >-
        Adobe removes support for passing the token as the `access_token` query
        or form parameter on 2026-08-31. All integrations must move to the
        Authorization header. This is the single most consequential live
        auth change on this API.
schemes:
  - name: MarketoOAuth2ClientCredentials
    type: oauth2
    flow: clientCredentials
    tokenUrl: https://{munchkinId}.mktorest.com/identity/oauth/token
    scopes: {}
    sources: [docs]
    note: >-
      Not present in any published spec — recorded here from the documentation.
      Adobe's swagger files omit securityDefinitions entirely.
errors:
  - code: 401
    where: identity endpoint
    meaning: Invalid Client Id or Client Secret.
  - code: '601'
    meaning: Access token invalid.
  - code: '602'
    meaning: Access token expired — re-authenticate and retry.
  - code: '603'
    meaning: >-
      Authenticated but not authorized. Additional Access API role permissions
      may be required, or Allowlist for IP-Based API Access may be enabled.
ip_allowlist:
  supported: true
  note: >-
    Marketo supports "Allowlist for IP-Based API Access"; when enabled, a
    correctly authenticated call from an unlisted address returns error 603.