generated: '2026-08-01'
method: derived
source: openapi/engrail-therapeutics-content-openapi.yml
summary: >-
  Engrail has both an MCP surface and a REST surface, so the crosswalk is emitted — but the MCP side
  cannot be bound yet. Both MCP servers reject anonymous tools/list with HTTP 401, and the provider
  publishes no llms.txt, docs page, or ability list naming its tools, so there is NO honest source
  for the tool names. crosswalk[] is therefore deliberately EMPTY rather than guessed: mapping
  invented tool names onto real operationIds would fabricate the exact binding this artifact exists
  to record. rest_only[] below is complete and real — every publicly readable operation on the site
  content API, none of which is currently known to have an MCP tool.
surfaces:
  openapi:
    file: openapi/engrail-therapeutics-content-openapi.yml
    base_url: https://www.engrail.com/wp-json
    gated: false
    note: >-
      Anonymously readable. Derived from the provider's own /wp-json/ route-discovery document; each
      operation's real parameter contract is carried in the spec.
  graphql:
    endpoint: null
    gated: null
    note: No GraphQL surface — https://www.engrail.com/graphql returns 404.
  mcp:
    servers:
    - https://www.engrail.com/wp-json/mcp/mcp-oauth-server
    - https://www.engrail.com/wp-json/mcp/mcp-adapter-default-server
    gated: true
    note: >-
      tools/list returns 401 on both. Requires an `mcp`-scoped bearer token issued by
      https://www.engrail.com/oauth/token (authorization_code + PKCE S256).
crosswalk: []
mcp_only: []
rest_only:
- capability: Content — posts and pages
  operations: [listPosts, getPost, listPages, getPage]
- capability: Media library
  operations: [listMedia, getMediaItem]
- capability: Taxonomy — categories and tags
  operations: [listCategories, getCategory, listTags, getTag]
- capability: Comments
  operations: [listComments, getComment]
- capability: Schema and vocabulary discovery
  operations: [listTypes, listTaxonomies, listStatuses]
- capability: Site search
  operations: [listSearch]
coverage:
  tools_named: 0
  tools_bound: 0
  mcp_only: 0
  rest_operations_total: 16
  rest_operations_with_tool: 0
  blocked_by: mcp-tools-list-401
next_step: >-
  Re-run this crosswalk after an authenticated tools/list introspection against the OAuth-protected
  MCP server; at that point every tool can be bound to a real operationId above.