generated: '2026-09-19'
method: searched
source: live probe of /.well-known/* on Tesser hosts
hosts:
- host: https://api.tesser.xyz
  documents:
  - path: /.well-known/oauth-protected-resource
    status: 200
    file: tesser-oauth-protected-resource.json
    note: resource=https://api.tesser.xyz; auth server=https://tesser-payments.us.auth0.com
  - path: /.well-known/oauth-authorization-server
    status: 404
  - path: /.well-known/openid-configuration
    status: 404
  - path: /.well-known/security.txt
    status: 404
  - path: /.well-known/api-catalog
    status: 404
- host: https://sandbox.tesserx.co
  documents:
  - path: /.well-known/oauth-protected-resource
    status: 200
    file: tesser-oauth-protected-resource-sandbox.json
    note: resource=https://sandbox.tesserx.co; auth server=https://dev-awqy75wdabpsnsvu.us.auth0.com
  - path: /.well-known/oauth-authorization-server
    status: 404
- host: https://tesser.xyz
  documents:
  - path: /.well-known/security.txt
    status: 404
  - path: /.well-known/openid-configuration
    status: 404
  - path: /.well-known/oauth-authorization-server
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /llms.txt
    status: 404
- host: https://dev-awqy75wdabpsnsvu.us.auth0.com
  documents:
  - path: /.well-known/oauth-authorization-server
    status: 200
    file: tesser-dev-awqy75wdabpsnsvu-oauth-authorization-server.json
    bytes: 2745
  path_echo_control: passed
notes: Both API hosts publish RFC 9728 OAuth Protected Resource metadata (used for MCP/OAuth auto-discovery).
  No security.txt, OIDC discovery, or api-catalog is published. Note llms.txt is served from the docs
  host (docs.tesser.xyz/llms.txt), not the apex.
x-mcp-probe:
  probed: '2026-09-19'
  issue: roadmap#321, roadmap#337
  documents:
  - host: https://dev-awqy75wdabpsnsvu.us.auth0.com
    path: /.well-known/oauth-authorization-server
    file: tesser-dev-awqy75wdabpsnsvu-oauth-authorization-server.json
  validated_on: resource (RFC 9728) / issuer (RFC 8414, OIDC)
  negative_control: one per host; a 2xx JSON object at an impossible path discards the host
note: 'MCP-host OAuth discovery added 2026-09-19 (roadmap#321/#337): the harvest visits a provider''s
  primary hosts, and RFC 9728 protected-resource metadata lives on the MCP host, so these documents existed
  and were invisible to the scorer. Fetched live and validated on `resource`/`issuer`; one negative control
  per host.'