API Evangelist agent-readiness overlay for the MandateShield Payment Authority API

overlay: 1.0.0
info:
  title: API Evangelist agent-readiness overlay for the MandateShield Payment Authority API
  version: 1.0.0
extends: openapi/_original/mandateshield-com-openapi.json
x-generated: '2026-09-19'
x-method: generated
x-source: openapi/_original/mandateshield-com-openapi.json
x-rationale: The harvested contract is complete on auth, errors and idempotency fields but does not link the cross-cutting
  semantics this profile captured (reversibility windows, idempotency scope, rate-limit behaviour, sandbox). This
  overlay attaches those as x- extensions WITHOUT mutating the original; apply with any Overlay 1.0.0 processor
  against openapi/_original/mandateshield-com-openapi.json.
actions:
- target: $.info
  description: Point at the API Evangelist profile artifacts.
  update:
    x-apievangelist:
      profile: https://github.com/api-evangelist/mandateshield-com
      conventions: conventions/mandateshield-com-conventions.yml
      errors: errors/mandateshield-com-problem-types.yml
      error_codes: errors/mandateshield-com-error-codes.yml
      rate_limits: rate-limits/mandateshield-com-rate-limits.yml
      sandbox: sandbox/mandateshield-com-sandbox.yml
      mcp: mcp/mandateshield-com-mcp.yml
      a2a: a2a/mandateshield-com-a2a.yml
- target: $.servers[0]
  description: Name the single server.
  update:
    description: Production and anonymous sandbox share this host; test vs live is selected by the ms_test_/ms_live_
      key, and anonymous v1 calls use the non-persisted sandbox.
- target: $.paths['/api/v2/verify'].post
  description: Reversibility and idempotency notes for the reservation-creating operation.
  update:
    x-idempotency:
      field: envelope.idempotency_key
      boundary: account-wide
    x-reversibility:
      reversal: transitionExecutionAuthorization action RELEASE or automatic expiry (expires_at)
      window: until CONSUME or expires_at; no fixed duration published
- target: $.paths['/api/v2/execution-authorizations'].post
  description: Reversibility notes for CONSUME.
  update:
    x-reversibility:
      reversal: action RELEASE for confirmed non-submission; COMMIT finalizes
      window: before the settlement deadline (length not published); unresolved outcomes become SETTLEMENT_UNKNOWN
        and are never auto-released
- target: $.paths['/api/v2/execution-permits/redeem'].post
  description: Single-winner semantics.
  update:
    x-reversibility:
      reversal: null
      note: 'Not reversible: single-winner claim; permit max lifetime 60 s, max_uses 1; exact retry returns the
        same claim with permission false.'
- target: $.paths['/api/v1/preflight'].post
  description: Mark the analysis-only profile as the dry-run mode.
  update:
    x-dry-run: true
    x-rate-limit: 200 mandate validations per day anonymously; 5,000 persisted decisions per month on a test key;
      429 with no rate-limit headers
- target: $.paths['/api/v2/sandbox/lifecycle'].post
  description: Mark the zero-account sandbox.
  update:
    x-sandbox:
      account_required: false
      money_moved: false
      external_provider_contacted: false