API Evangelist enhancements for the Decision Anchor API

overlay: 1.0.0
info:
  title: API Evangelist enhancements for the Decision Anchor API
  version: 1.0.0
extends: ../openapi/decision-anchor-com-openapi.yml
x-generated: '2026-09-19'
x-method: generated
x-source: >-
  Generated from openapi/decision-anchor-com-openapi.yml plus the probed and searched artifacts in this repo.
  Captures API Evangelist annotations without mutating the provider's contract. The provider declares no
  operationIds; the ids proposed below are proposals and do not exist in the provider's spec.
actions:
- target: $.info
  description: Link the provider's other machine-readable surfaces from the contract.
  update:
    x-agent-card: https://a2a.decision-anchor.com/.well-known/agent-card.json
    x-mcp-server: https://mcp.decision-anchor.com/mcp
    x-mcp-discovery: https://api.decision-anchor.com/.well-known/mcp.json
    x-a2a-endpoint: https://a2a.decision-anchor.com/
    x-llms-txt: https://api.decision-anchor.com/llms.txt
    x-agents-guide: https://github.com/zse4321/decision-anchor-sdk/blob/main/AGENTS.md
    x-changelog: https://decision-anchor.com/changelog/
    x-security-txt: https://api.decision-anchor.com/.well-known/security.txt
    x-payment:
      protocol: x402
      version: 2
      discovery: https://api.decision-anchor.com/.well-known/x402.json
      asset: USDC
      network: eip155:8453 (Base)
      challenge_header: PAYMENT-REQUIRED
      retry_header: Payment-Signature
      pricing_endpoint: https://api.decision-anchor.com/v1/pricing/current
- target: $.info
  description: Record the rate-limit headers observed live on every response, which the contract does not declare.
  update:
    x-rate-limits:
    - {scope: per-client, limit: 100, window: 60s, headers: [RateLimit-Limit, RateLimit-Policy, RateLimit-Remaining, RateLimit-Reset], observed: '2026-09-19'}
    - {scope: per-route, route: 'POST /v1/agent/token/recover', limit: 5, window: 15 minutes, status: 429, declared: true}
- target: $.components
  description: Declare the RateLimit response headers as reusable components (not present in the provider's contract).
  update:
    headers:
      RateLimit-Limit: {schema: {type: integer}, description: 'Requests allowed in the current window (observed 100).'}
      RateLimit-Policy: {schema: {type: string}, description: 'IETF RateLimit policy string (observed "100;w=60").'}
      RateLimit-Remaining: {schema: {type: integer}, description: Requests remaining in the window.}
      RateLimit-Reset: {schema: {type: integer}, description: Seconds until the window resets.}
- target: $.paths['/v1/agent/register'].post
  description: Proposed operationId (provider declares none) and an agentic-access hint.
  update:
    x-proposed-operationId: registerAgent
    x-idempotent: false
- target: $.paths['/v1/dd/create'].post
  description: Proposed operationId; the route's request_id is a body-level idempotency key scoped to the agent.
  update:
    x-proposed-operationId: createDecisionDeclaration
    x-idempotency-key: request_id (body, uuid v4, scoped to agent_id)
    x-reversibility: 'irreversible once confirmed; an externally paid record lapses if not confirmed within 30 minutes'
- target: $.paths['/v1/dd/confirm'].post
  update:
    x-proposed-operationId: confirmDecisionDeclaration
    x-idempotency: 'idempotent by state — a second confirm returns 409 ALREADY_CONFIRMED'
- target: $.paths['/v1/dd/bilateral/propose'].post
  update:
    x-proposed-operationId: proposeBilateralDeclaration
    x-idempotency-key: request_id (body)
- target: $.paths['/v1/tsl/purchase'].post
  update:
    x-proposed-operationId: purchaseTslTool
    x-idempotency-key: request_id (body)
- target: $.paths['/v1/ara/query'].post
  description: Flag the deprecated route's replacements in a machine-readable field.
  update:
    x-replaced-by: ['GET /v1/ara/agent/{agent_id}/profile', 'GET /v1/ara/agent/{agent_id}/timeline']
- target: $.paths['/v1/ara/environment/summary'].get
  update:
    x-replaced-by: ['GET /v1/ara/environment']
- target: $.paths['/dap/account'].delete
  update:
    x-proposed-operationId: requestAccountDeletion
    x-reversibility: 'restore via POST /dap/account/restore within the 30-day grace period'
    x-regulation: GDPR Art. 17
- target: $.paths['/dap/account/export'].get
  update:
    x-proposed-operationId: exportAccountData
    x-regulation: GDPR Art. 20