Taizen Authentication

generated: '2026-08-14'
method: probed
source: >-
  https://eu.mcp.usetaizen.com/.well-known/oauth-authorization-server and
  https://eu.mcp.usetaizen.com/.well-known/oauth-protected-resource (both HTTP 200, probed
  2026-08-14); 401 challenge headers on POST https://eu.mcp.usetaizen.com/mcp
note: >-
  DERIVED FROM SERVED METADATA, NOT FROM AN OPENAPI. Taizen publishes no REST contract, so there are
  no securitySchemes to read. Its only authenticated machine surface is the remote MCP server, which
  implements the MCP OAuth profile properly: RFC 8414 authorization-server metadata, RFC 9728
  protected-resource metadata, and an RFC 6750 WWW-Authenticate challenge that points a client at the
  resource metadata document.
applies_to:
  api: Taizen MCP Server
  resource: https://eu.mcp.usetaizen.com
schemes:
- id: taizen-mcp-oauth2
  type: oauth2
  flows:
    authorizationCode:
      authorizationUrl: https://eu.mcp.usetaizen.com/oauth/authorize
      tokenUrl: https://eu.mcp.usetaizen.com/oauth/token
      scopes: {}
  issuer: https://eu.mcp.usetaizen.com
  registration_endpoint: https://eu.mcp.usetaizen.com/oauth/register
  dynamic_client_registration: true
  response_types_supported:
  - code
  grant_types_supported:
  - authorization_code
  code_challenge_methods_supported:
  - S256
  token_endpoint_auth_methods_supported:
  - none
  bearer_methods_supported:
  - header
  scopes_supported: []
  public_client: true
  pkce_required: true
  note: >-
    token_endpoint_auth_methods_supported is ["none"], i.e. public clients only — there is no
    confidential-client credential, and PKCE S256 is the sole proof of possession at the token
    endpoint. This is the expected shape for an MCP server talking to desktop/CLI agent clients.
challenge:
  status: 401
  body: '{"detail":"Missing or invalid Authorization header"}'
  www_authenticate: >-
    Bearer resource_metadata="https://eu.mcp.usetaizen.com/.well-known/oauth-protected-resource"
  cache_control: no-store
scopes_published: false
scopes_note: >-
  scopes_supported is an empty array in BOTH metadata documents, so a client cannot request or reason
  about least-privilege access — authorization is all-or-nothing against the connected Taizen
  account. No scopes/ artifact is written for this repo because the provider publishes no scope
  vocabulary of its own.
consumed_third_party_auth:
  note: >-
    Separately from the above, Taizen's docs describe the credentials Taizen ITSELF requests FROM the
    customer's tools. These are inbound integration credentials, not scopes Taizen issues. Captured
    in integrations/taizen-integrations.yml.
  docs: https://docs.usetaizen.com/docs
openid_connect:
  supported: false
  evidence: >-
    https://eu.mcp.usetaizen.com/.well-known/openid-configuration returns 404, as does the same path
    on usetaizen.com, docs.usetaizen.com, api.usetaizen.com and us.mcp.usetaizen.com.