API Evangelist enrichment overlay for DrChrono EHR REST Administrative Billing API

overlay: 1.0.0
info:
  title: API Evangelist enrichment overlay for DrChrono EHR REST Administrative Billing API
  version: 1.0.0
extends: drchrono-billing-api-openapi.yml
x-provenance:
  generated: '2026-08-14'
  method: generated
  source: openapi/drchrono-billing-api-openapi.yml + https://app.drchrono.com/api-docs/
  note: Captures API Evangelist enrichments only. The original OpenAPI is never mutated; apply this overlay to produce
    the enriched view.
actions:
- target: $.info
  description: Attach machine-readable contact and licensing that the published DrChrono spec omits.
  update:
    contact:
      name: DrChrono API Support
      email: api@drchrono.com
      url: https://app.drchrono.com/api-docs/
    termsOfService: https://app.drchrono.com/api-terms/
- target: $.info
  description: Cross-reference the enrichment artifacts derived from this contract.
  update:
    x-api-evangelist:
      source: https://app.drchrono.com/openapi-schema
      harvested: '2026-08-14'
      artifacts:
        conventions: conventions/drchrono-conventions.yml
        errors: errors/drchrono-problem-types.yml
        lifecycle: lifecycle/drchrono-lifecycle.yml
        changelog: changelog/drchrono-changelog.yml
        conformance: conformance/drchrono-conformance.yml
        data_model: data-model/drchrono-data-model.yml
        scopes: scopes/drchrono-scopes.yml
        authentication: authentication/drchrono-authentication.yml
        rate_limits: rate-limits/drchrono-rate-limits.yml
        webhooks: asyncapi/drchrono-webhooks-asyncapi.yml
        skills: skills/_index.yml
- target: $.info
  description: Record the documented rate limits, which the contract itself does not express.
  update:
    x-rate-limits:
      hourly: 500
      window: fixed hour, resets at the top of the hour
      burst: 10 requests per second
      status: 429
      response_headers: null
      increase: api@drchrono.com
      source: https://app.drchrono.com/api-docs/
- target: $.info
  description: Record the documented pagination contract, including the envelope divergence between the reference
    and the spec.
  update:
    x-pagination:
      style: page
      parameter: page_size
      default: 250
      maximum: 250
      documented_envelope:
      - previous
      - results
      - next
      spec_envelope:
      - previous
      - data
      - next
      exceptions:
      - path: /api/appointments
        maximum: 20
      - parameter: verbose=true
        maximum: 50
- target: $.info
  description: Record the absence of an idempotency mechanism so agents do not assume safe retries on write operations.
  update:
    x-idempotency:
      supported: false
      note: No idempotency key or replay window is published. Retrying a POST creates a second object. The only
        guard is api_prevent_patient_duplicate on POST /api/patients, which returns 409 on a first-name/last-name/DOB/gender
        match.
- target: $.paths.*.*[?(@.deprecated != true)]
  description: 'No-op marker: DrChrono marks no operation deprecated in this contract, and field-level deprecation
    (Patient.default_pharmacy) is announced only in prose. Recorded so consumers know deprecation is not machine-readable
    here.'
  update:
    x-deprecation-signal: prose-only