generated: '2026-09-19'
method: searched
source: openapi/fodda-ai-openapi.yml + openapi/fodda-ai-context-delivery-openapi.yml (securitySchemes) + https://www.fodda.ai/llms.txt
  + https://www.fodda.ai/llms-full.txt (RULE AuthenticationRules) + well-known/fodda-ai-clerk-openid-configuration.json
  + well-known/fodda-ai-clerk-oauth-authorization-server.json + well-known/fodda-ai-mcp-oauth-protected-resource*.json
  + a2a/fodda-ai-agent-legacy.json securitySchemes + live 401/402 challenges (2026-09-19)
docs: https://www.fodda.ai/api
summary:
  types:
  - apiKey
  - http
  - openIdConnect
  - oauth2
  api_key_in:
  - header
  - query (deprecated for MCP URLs)
  oauth2_flows:
  - authorizationCode (PKCE S256)
  - deviceCode
  - refresh_token
  rails: 'Three rails meter one unit: account API key (free tier), Stripe Shared Payment Token via HTTP 402 (no
    account), enterprise OIDC JWT. The MCP server adds OAuth 2.1 delegated to clerk.fodda.ai and personal connection
    URLs.'
schemes:
- name: apiKey
  type: apiKey
  in: header
  parameter: X-API-Key
  description: 'Required for all endpoints unless marked public. Issued at app.fodda.ai (Account); free tier $50
    of API calls / 100 calls per month with a card on file, then $0.50 per call. Self-serve key rotation at app.fodda.ai
    (compliance dossier). Copilot Studio guide also accepts Authorization: Bearer <api key>. Autonomous provisioning:
    POST /api/account/b2b-provision (named on /agents; not in the OpenAPI).'
  sources:
  - openapi/fodda-ai-openapi.yml
  - openapi/fodda-ai-context-delivery-openapi.yml
  - https://www.fodda.ai/llms.txt
  - https://www.fodda.ai/agents
  surfaces:
  - REST
  - MCP (header or personal URL)
- name: stripeSPT
  type: http
  scheme: bearer
  bearer_format: spt_... (Stripe Shared Payment Token)
  description: 'Machine Payments Protocol: call any endpoint with no credentials, receive HTTP 402 with the exact
    price (WWW-Authenticate: stripe-spt amount=<cents> currency=usd), obtain an SPT from Stripe Link, retry with
    Authorization: Bearer spt_xxx or X-Stripe-SPT: spt_xxx. Price = API-call count × $0.50. Direct REST API only
    (not MCP). Validate with GET /v1/spt/validate.'
  sources:
  - openapi/fodda-ai-openapi.yml
  - https://www.fodda.ai/llms.txt
  - https://www.fodda.ai/llms-full.txt
  - live 402 on api.fodda.ai
  surfaces:
  - REST
- name: oidc
  type: openIdConnect
  openIdConnectUrl: https://clerk.fodda.ai/.well-known/openid-configuration
  description: 'Enterprise SSO via OIDC: Authorization: Bearer <jwt>. Issuer https://clerk.fodda.ai (Clerk-delegated;
    RS256, claims incl. email, org_id). Named in llms.txt/agents.txt and the legacy agent document; the REST OpenAPI
    does not declare it.'
  sources:
  - https://www.fodda.ai/llms.txt
  - https://www.fodda.ai/agents.txt
  - well-known/fodda-ai-clerk-openid-configuration.json
  - a2a/fodda-ai-agent-legacy.json
  surfaces:
  - REST (enterprise)
  - MCP
- name: oauth2
  type: oauth2
  description: OAuth 2.1 for the MCP server, discovered per RFC 9728 from the 401 challenge. Resource metadata on
    mcp.fodda.ai names authorization server https://clerk.fodda.ai; dynamic client registration is supported.
  flows:
  - flow: authorizationCode
    authorization_server: https://clerk.fodda.ai
    authorization_endpoint: https://clerk.fodda.ai/oauth/authorize
    token_endpoint: https://clerk.fodda.ai/oauth/token
    registration_endpoint: https://clerk.fodda.ai/oauth/register
    revocation_endpoint: https://clerk.fodda.ai/oauth/token/revoke
    introspection_endpoint: https://clerk.fodda.ai/oauth/token_info
    userinfo_endpoint: https://clerk.fodda.ai/oauth/userinfo
    pkce: S256
    grant_types:
    - authorization_code
    - refresh_token
    scopes:
    - openid
    - profile
    - email
    - public_metadata
    - private_metadata
    - offline_access
    - user:org:read
    token_endpoint_auth_methods:
    - client_secret_basic
    - client_secret_post
    - none
  - flow: deviceCode
    device_authorization_endpoint: https://clerk.fodda.ai/oauth/device_authorization
    grant_types:
    - urn:ietf:params:oauth:grant-type:device_code
  protected_resources:
  - resource: https://mcp.fodda.ai
    metadata: well-known/fodda-ai-mcp-oauth-protected-resource.json
  - resource: https://mcp.fodda.ai/mcp
    metadata: well-known/fodda-ai-mcp-oauth-protected-resource-mcp.json
  - resource: https://mcp.fodda.ai/copilot
    metadata: well-known/fodda-ai-mcp-oauth-protected-resource-copilot.json
  - resource: https://mcp.fodda.ai/mcp (as published on www)
    metadata: well-known/fodda-ai-www-oauth-protected-resource.json
    scopes_supported:
    - read
    bearer_methods_supported:
    - header
  sources:
  - well-known/fodda-ai-clerk-oauth-authorization-server.json
  - live WWW-Authenticate on POST https://mcp.fodda.ai/mcp
  surfaces:
  - MCP
- name: personalConnectionUrl
  type: apiKey
  in: path
  parameter: token
  description: 'MCP-only: https://mcp.fodda.ai/c/<token> from app.fodda.ai -> Account -> MCP Integration, pasted
    into Claude/ChatGPT connectors with OAuth client fields left blank. Legacy ?api_key= / ?user_id= URLs are deprecated
    and return 401.'
  sources:
  - fodda-mcp README
  - https://www.fodda.ai/platform-integration-anthropic-claude
  surfaces:
  - MCP
public_tier:
  no_credential_required:
  - GET /v1/health
  - GET /v1/research/pricing
  - GET /v1/offerings
  - GET /v1/research/offerings
  - GET /v1/graphs/catalog
  - GET /v1/analysts
  - GET /v1/graph-slice
  - GET /v1/catalog.okf
  - GET /openapi.json
  note: Verified live 2026-09-19. The spec marks POST /v1/psfk/overview public but it answered 402 unauthenticated.
challenges_observed:
- surface: api.fodda.ai secured operation
  status: 402
  www_authenticate: stripe-spt amount=50 currency=usd
- surface: mcp.fodda.ai /mcp, /copilot, /sse
  status: 401
  www_authenticate: Bearer resource_metadata="https://mcp.fodda.ai/.well-known/oauth-protected-resource/mcp"