overlay: 1.0.0
info:
  title: API Evangelist enhancements — _done Mortgage & Loan Amortization Calculator
  version: 1.0.0
extends: openapi/done-mortgage-amortization-openapi.yml
x-generated: '2026-08-11'
x-method: generated
x-source: openapi/_original/done-mortgage-amortization-openapi.json
x-note: 'Non-destructive. Captures API Evangelist enhancements only: catalog provenance, a canonical resource tag
  in place of the SEO keyword tag list (keywords preserved under x-keywords), and a service-namespaced canonical
  operationId. The provider spec is never mutated.'
actions:
- target: $.info
  description: Record API Evangelist provenance and the catalog identity of this service.
  update:
    x-api-evangelist:
      provider: _done
      slug: done
      catalog: https://apis.io/provider/done/
      harvested: '2026-08-11'
      source: https://mortgage-amortization.underscoredone.com/openapi.json
      payment_protocol: x402
      price_usd: 0.01
- target: $.paths["/calculate"].post
  description: Collapse 14 SEO keyword tags to one canonical resource tag "mortgage calculator". The original keyword
    list is preserved as x-keywords so nothing is lost.
  update:
    tags:
    - mortgage calculator
    x-keywords:
    - mortgage calculator
    - loan amortization
    - amortization schedule
    - mortgage
    - monthly payment calculator
    - mortgage payment
    - loan payment schedule
    - mortgage amortization
    - loan calculator
    - extra payment calculator
    - interest schedule
    - payoff calculator
    - principal and interest
    - mortgage schedule
- target: $.paths["/calculate"].post
  description: Namespace the operationId by service — operationIds collide across the 26 _done specs.
  update:
    x-canonical-operation-id: mortgage_amortization_handler_calculate_post
- target: $.tags
  description: Reduce the 14-entry SEO tag list to one canonical resource tag.
  update:
  - name: mortgage calculator
    description: Mortgage & Loan Amortization Calculator