Cuvo Health A2a API

openapi: 3.2.0
info:
  title: Cuvo Health public A2a API
  version: '2026-08-23'
  summary: Read-only content, discovery, and $0 discovery-call booking endpoints for AI agents. No authentication, no API keys.
  description: 'The public machine interface of cuvo.co, the Cuvo Health white label telehealth platform. Every endpoint is unauthenticated and free; all content mirrors claims already published on the human-readable pages. Human documentation lives at https://cuvo.co/developers (developer portal) and https://cuvo.co/api-docs (endpoint reference).


    Versioning: date-based. This document describes version 2026-08-23, echoed on every response in the API-Version header; requests may pin a version by sending the API-Version request header. Breaking changes ship as a new version date, the prior version keeps working for at least 90 days, and responses on a deprecated version carry Deprecation and Sunset headers for that whole window.


    Errors: unless an operation says otherwise, errors are RFC 9457 application/problem+json with a machine-readable "code" and a "hint" describing the recovery step. The ACP endpoints return the Agentic Commerce Protocol''s own error body (a messages array); the A2A and MCP endpoints return JSON-RPC 2.0 error objects.


    Rate limits: 300 requests per 60 seconds per IP on dynamic endpoints, advertised live in the RateLimit response headers; a 429 carries Retry-After. Statically cached endpoints advertise the policy in RateLimit-Policy.


    Related non-API resources: the sitemap at /sitemap.xml, the RSS feed at /feed.xml, the Schema Feeds map at /schemamap.xml (schemamap directive in robots.txt), scoped llms.txt files (/developers/llms.txt, /blog/llms.txt, /compare/llms.txt, /pricing/llms.txt, /api/llms.txt, /docs/llms.txt), and plain-markdown mirrors of the content pages: /index.md for the homepage, and .md appended to /pricing, /developers, /about, /booking, /terms, /privacy, /security, any /blog/, or any /compare/ URL. Every mirror opens with YAML frontmatter (title, description, canonical, last-updated).'
  contact:
    name: Cuvo Health team
    url: https://cuvo.co/booking
  termsOfService: https://cuvo.co/terms
  license:
    name: Proprietary (free to call; content mirrors the published site)
    url: https://cuvo.co/terms
servers:
- url: https://cuvo.co
security: []
tags:
- name: a2a
  description: Agent2Agent JSON-RPC endpoint
paths:
  /api/a2a:
    parameters:
    - $ref: '#/components/parameters/ApiVersion'
    post:
      operationId: sendA2aMessage
      tags:
      - a2a
      summary: A2A JSON-RPC endpoint
      description: JSON-RPC 2.0, method message/send only. Replies deterministically from published facts; a data part with first_name and email books the free discovery call.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/JsonRpcRequest'
      responses:
        '200':
          description: 'JSON-RPC response: an A2A Message result, or a JSON-RPC error object.'
          headers:
            API-Version:
              $ref: '#/components/headers/ApiVersion'
            RateLimit-Policy:
              $ref: '#/components/headers/RateLimitPolicy'
            RateLimit:
              $ref: '#/components/headers/RateLimit'
            RateLimit-Limit:
              $ref: '#/components/headers/RateLimitLimit'
            RateLimit-Remaining:
              $ref: '#/components/headers/RateLimitRemaining'
            RateLimit-Reset:
              $ref: '#/components/headers/RateLimitReset'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/JsonRpcResponse'
        '429':
          $ref: '#/components/responses/RateLimited'
        default:
          $ref: '#/components/responses/Problem'
components:
  headers:
    RateLimitLimit:
      description: Requests allowed per window (draft-07 form).
      schema:
        type: integer
    RateLimitPolicy:
      description: Rate-limit policy (draft-ietf-httpapi-ratelimit-headers structured field), e.g. "default";q=60;w=60.
      schema:
        type: string
    RateLimit:
      description: 'Live quota state: "default";r=<remaining>;t=<seconds to reset>.'
      schema:
        type: string
    ApiVersion:
      description: The API version that served this response.
      schema:
        type: string
        enum:
        - '2026-08-23'
    RateLimitRemaining:
      description: Requests remaining in the current window.
      schema:
        type: integer
    RateLimitReset:
      description: Seconds until the current window resets.
      schema:
        type: integer
  schemas:
    JsonRpcRequest:
      type: object
      description: JSON-RPC 2.0 request.
      properties:
        jsonrpc:
          type: string
          const: '2.0'
        id:
          type:
          - string
          - integer
          - 'null'
        method:
          type: string
        params:
          type: object
      required:
      - jsonrpc
      - method
    Problem:
      type: object
      description: RFC 9457 problem detail. code is stable and machine-readable; hint says what to do next. Documented at https://cuvo.co/developers#errors
      properties:
        type:
          type: string
          format: uri
        title:
          type: string
        status:
          type: integer
        detail:
          type: string
        code:
          type: string
          description: Machine-readable error code (snake_case), e.g. not_found, method_not_allowed, rate_limited.
        hint:
          type: string
          description: Suggested next step for the caller.
        instance:
          type: string
      required:
      - title
      - status
      - detail
      - code
    JsonRpcResponse:
      type: object
      description: 'JSON-RPC 2.0 response: exactly one of result or error is present.'
      properties:
        jsonrpc:
          type: string
          const: '2.0'
        id:
          type:
          - string
          - integer
          - 'null'
        result:
          type: object
        error:
          type: object
          properties:
            code:
              type: integer
            message:
              type: string
          required:
          - code
          - message
      required:
      - jsonrpc
  responses:
    Problem:
      description: Error (RFC 9457 problem detail with machine-readable code and recovery hint).
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/Problem'
    RateLimited:
      description: Rate limit exceeded. Wait Retry-After seconds, then retry.
      headers:
        API-Version:
          $ref: '#/components/headers/ApiVersion'
        RateLimit-Policy:
          $ref: '#/components/headers/RateLimitPolicy'
        RateLimit:
          $ref: '#/components/headers/RateLimit'
        RateLimit-Limit:
          $ref: '#/components/headers/RateLimitLimit'
        RateLimit-Remaining:
          $ref: '#/components/headers/RateLimitRemaining'
        RateLimit-Reset:
          $ref: '#/components/headers/RateLimitReset'
        Retry-After:
          description: Seconds to wait before retrying.
          schema:
            type: integer
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/Problem'
  parameters:
    ApiVersion:
      name: API-Version
      in: header
      required: false
      description: Pin a specific API version (date-based). Omitting it selects the current version; every response echoes the version served.
      schema:
        type: string
        enum:
        - '2026-08-23'