overlay: 1.0.0
info:
  title: API Evangelist enhancements for Arkham Intel API
  version: 1.0.0
extends: openapi/arkham-openapi-original.json
actions:
- target: $.info
  update:
    x-apievangelist-provider: arkham
    x-apievangelist-review-date: '2026-07-18'
    x-api-base-url: https://api.arkm.com
    x-auth: API-Key header
    x-billing: usage-based credits ($0.20 per credit; from $900/mo)
    x-agent-surface: https://api.arkm.com/x402
- target: $.servers
  update:
  - url: https://api.arkm.com
    description: Arkham Intel API production
- target: $.components.securitySchemes
  update:
    ApiKeyHeader:
      type: apiKey
      in: header
      name: API-Key
      description: >-
        Documented in the API Keys & Authentication guide; the published spec omits securitySchemes.
        AE overlay adds it so downstream tooling can model auth.