API Evangelist enrichment overlay — Event Registry Topic Pages API

overlay: 1.0.0
info:
  title: API Evangelist enrichment overlay — Event Registry Topic Pages API
  version: 1.0.0
  x-generated: '2026-08-13'
  x-method: generated
  x-source: openapi/event-registry-topic-pages-api-openapi.yml
extends: ./event-registry-topic-pages-api-openapi.yml
actions:
- target: $.info
  description: Record API Evangelist provenance and the artifacts derived from this definition.
  update:
    x-apievangelist-enrichment:
      repository: https://github.com/api-evangelist/event-registry
      enriched: '2026-08-13'
      artifacts:
      - conventions/event-registry-conventions.yml
      - errors/event-registry-problem-types.yml
      - data-model/event-registry-data-model.yml
      - lifecycle/event-registry-lifecycle.yml
      - conformance/event-registry-conformance.yml
      - mcp/event-registry-mcp.yml
      - mcp/event-registry-tool-crosswalk.yml
      - skills/_index.yml
- target: $.info
  description: Note that the documentation portal is JavaScript-rendered and that the provider publishes
    no OpenAPI of its own.
  update:
    x-contract-provenance:
      authored_by: API Evangelist
      provider_published_openapi: false
      probed:
      - https://eventregistry.org/openapi.json
      - https://eventregistry.org/swagger.json
      - https://newsapi.ai/openapi.json
      probe_result: All returned HTTP 200 with the site SPA HTML shell, not an OpenAPI document.
- target: $.servers[0]
  description: Confirm the production base URL against the provider's own first-party client source.
  update:
    x-verified:
      source: https://github.com/EventRegistry/newsapi-mcp/blob/main/src/client.ts
      evidence: const BASE_URL = "https://eventregistry.org/api/v1";
      checked: '2026-08-13'
- target: $.components.securitySchemes.apiKeyAuth
  description: Record how the provider's own client transmits the API key.
  update:
    x-transmission:
      primary: apiKey field inside the JSON POST body
      alternate: apiKey query parameter
      header: null
      source: https://github.com/EventRegistry/newsapi-mcp/blob/main/src/client.ts
- target: $.paths.*.post
  description: Attach the undeclared runtime error surface and the rate-limit response headers to every
    operation.
  update:
    x-runtime-semantics:
      concurrency-limit: 5
      concurrency-exhausted-status: 503
      concurrency-note: Excess simultaneous requests are rejected immediately, not queued. Call sequentially.
      quota-exhausted-status: 429
      response-headers:
      - req-tokens
      - x-ratelimit-remaining
      retry-after: false
      undeclared-statuses:
      - 400
      - 403
      - 404
      - 503
      source: errors/event-registry-problem-types.yml
- target: $.paths.*.post
  description: Record the token-efficient scan/triage/retrieve pattern the provider recommends in its
    own Agent Skill.
  update:
    x-usage-pattern:
      name: suggest -> scan -> triage -> retrieve
      scan: Set articleBodyLen 0 and request up to 100 results to get titles only.
      retrieve: Fetch bodies only for the URIs selected during triage, up to 100 per call.
      deduplicate: 'isDuplicateFilter: skipDuplicates removes wire syndication.'
      source: skills/event-registry-news-research.md