Social Fetch — API Evangelist enrichment overlay

overlay: 1.0.0
info:
  title: Social Fetch — API Evangelist enrichment overlay
  version: 1.0.0
extends: ../openapi/social-fetch-openapi.json
x-provenance:
  generated: '2026-09-11'
  method: generated
  source: >-
    Enhancements derived from the served OpenAPI, agents.txt, docs/errors.mdx and
    docs/credits.mdx. This overlay never mutates the original spec.
actions:
  - target: $.info
    description: >-
      Annotate the API with cross-cutting agent-readiness semantics that the
      published spec leaves to prose docs.
    update:
      x-response-envelope:
        success: '{ data, meta }'
        error: '{ error: { code, message, requestId } }'
        outcome_field: data.lookupStatus (found | not_found | private | restricted) on HTTP 200
        problem_json: false
      x-authentication:
        rest: 'x-api-key: sfk_...'
        mcp: OAuth (app.socialfetch.dev) or x-api-key fallback
        x402: USDC-on-Base walk-up pay-per-call on payable resources
      x-pagination:
        style: cursor
        request_param: cursor
        response_fields: [data.page.nextCursor, data.page.hasMore]
      x-agent-surfaces:
        mcp: https://api.socialfetch.dev/mcp
        llms_txt: https://www.socialfetch.dev/llms.txt
        agents_txt: https://www.socialfetch.dev/agents.txt
        skills: 'npx skills add social-freak-ltd/socialfetch -s socialfetch'
      x-metering:
        unit: credit
        note: >-
          Metered routes bill on successful lookup, including not_found/private
          outcomes on 200; cache hits still charge. 502/503 not charged.
  - target: $.info
    description: >-
      Flag the enrichment finding that the source spec declares no operationId on
      any of its 206 operations and no top-level tags, so codegen/tool-binding
      must key on METHOD + path.
    update:
      x-enrichment-notes:
        missing_operation_ids: true
        missing_tags: true
        binding_key: method+path