generated: '2026-09-19'
method: probed
source: 'Direct HTTPS probes of the named /.well-known/ path list on every Upstox host: the website (upstox.com),
  the API host (api.upstox.com), the OpenAPI servers[] host (api-v2.upstox.com), the high-frequency order
  host (api-hft.upstox.com) and the hosted MCP host (mcp.upstox.com).'
name: Upstox well-known documents
description: 'Upstox serves no /.well-known/ documents from its website or REST API hosts. Its hosted
  Model Context Protocol server at mcp.upstox.com is the exception and serves a complete OAuth 2.0 discovery
  surface: RFC 8414 authorization-server metadata (with a dynamic client registration endpoint and PKCE
  S256) and RFC 9728 protected-resource metadata at both the root and the resource-specific /.well-known/oauth-protected-resource/mcp
  path. No A2A agent card, no api-catalog, no security.txt, no ai-plugin.json anywhere.'
hosts:
- host: upstox.com
  documents:
  - path: /.well-known/security.txt
    status: 403
    note: Origin object store answered AccessDenied (XML), not an RFC 9116 document. Treated as absent.
  - path: /.well-known/openid-configuration
    status: 404
  - path: /.well-known/oauth-authorization-server
    status: 404
  - path: /.well-known/oauth-protected-resource
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /.well-known/ai-plugin.json
    status: 404
  - path: /.well-known/agent-card.json
    status: 404
  - path: /.well-known/agent.json
    status: 404
  - path: /.well-known/aauth-resource.json
    status: 404
- host: api.upstox.com
  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/oauth-protected-resource
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /.well-known/ai-plugin.json
    status: 404
  - path: /.well-known/agent-card.json
    status: 404
  - path: /.well-known/agent.json
    status: 404
  - path: /.well-known/aauth-resource.json
    status: 404
- host: api-v2.upstox.com
  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/oauth-protected-resource
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /.well-known/ai-plugin.json
    status: 404
  - path: /.well-known/agent-card.json
    status: 404
  - path: /.well-known/agent.json
    status: 404
  - path: /.well-known/aauth-resource.json
    status: 404
- host: api-hft.upstox.com
  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/oauth-protected-resource
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /.well-known/ai-plugin.json
    status: 404
  - path: /.well-known/agent-card.json
    status: 404
  - path: /.well-known/agent.json
    status: 404
  - path: /.well-known/aauth-resource.json
    status: 404
- host: mcp.upstox.com
  documents:
  - path: /.well-known/oauth-authorization-server
    status: 200
    file: upstox-mcp-oauth-authorization-server.json
    note: RFC 8414 authorization server metadata. issuer https://mcp.upstox.com, authorization_code +
      refresh_token grants, dynamic client registration at /register, PKCE plain and S256.
  - path: /.well-known/oauth-protected-resource
    status: 200
    file: upstox-mcp-oauth-protected-resource.json
    note: RFC 9728 protected resource metadata for the MCP host root.
  - path: /.well-known/oauth-protected-resource/mcp
    status: 200
    file: upstox-mcp-oauth-protected-resource-mcp.json
    note: RFC 9728 metadata scoped to the MCP endpoint itself (resource https://mcp.upstox.com/mcp) —
      the document an MCP client reads from the 401 WWW-Authenticate challenge.
  - path: /.well-known/security.txt
    status: 404
  - path: /.well-known/openid-configuration
    status: 404
  - path: /.well-known/api-catalog
    status: 404
  - path: /.well-known/ai-plugin.json
    status: 404
  - path: /.well-known/agent-card.json
    status: 404
  - path: /.well-known/agent.json
    status: 404
  - path: /.well-known/aauth-resource.json
    status: 404
  path_echo_control: passed
summary:
  hosts_probed: 5
  paths_probed_per_host: 9
  documents_served: 3
  security_txt: false
  api_catalog: false
  agent_card: false
  openid_configuration: false
  oauth_metadata: true
x-mcp-probe:
  probed: '2026-09-19'
  issue: roadmap#321, roadmap#337
  documents:
  - host: https://mcp.upstox.com
    path: /.well-known/oauth-protected-resource
    file: upstox-mcp-oauth-protected-resource.json
  - host: https://mcp.upstox.com
    path: /.well-known/oauth-authorization-server
    file: upstox-mcp-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.'