corsproxy-dev

corsproxy-dev MCP API

Remote MCP server for AI assistants and agents.

GitHub OpenAPI

Operations 1

POST /mcp Remote MCP server (Streamable HTTP, JSON-RPC 2.0) #

Specifications

⚙
OpenAPI
https://artifacts.apis.io/corsproxy-dev/openapi/corsproxy-dev-mcp-api-openapi.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/corsproxy-dev:corsproxy-dev-mcp-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

corsproxy-dev-mcp-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: corsproxy.dev MCP API
  version: 0.1.0
  description: 'Managed CORS proxy API. Programmatic surface for the hosted runtime at

    `https://api.corsproxy.dev`. The same wire protocol is implemented by

    the MIT-licensed Go runtime at

    if you want to self-host.


    Auth: an API key, as `?key=sk_live_…` (browsers) or the `X-API-Key`

    header (servers). Keys are locked to their allowed origins, so server

    callers also send an allowed `Origin` header. API keys only work on the

    endpoints below; account management happens in the dashboard.


    Rate limits:

    - Free plan: 500 requests/day per account, enforced atomically by a

    per-user Durable Object. Over the limit returns `429`.'
  contact:
    name: corsproxy.dev support
    email: contact@corsproxy.dev
    url: https://corsproxy.dev/
  license:
    name: MIT (runtime)
    url: https://github.com/melihbirim/corsproxy/blob/main/LICENSE
servers:
- url: https://api.corsproxy.dev
  description: Production
tags:
- name: MCP
  description: Remote MCP server for AI assistants and agents.
paths:
  /mcp:
    post:
      tags:
      - MCP
      summary: Remote MCP server (Streamable HTTP, JSON-RPC 2.0)
      description: 'Model Context Protocol endpoint for AI assistants and agents. Tools:

        fetch_url, check_quota, explain_error. Authenticate with X-API-Key plus

        an Origin header allowed on the key. See https://corsproxy.dev/docs/#mcp'
      security:
      - apiKey: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              description: One JSON-RPC 2.0 message (initialize, tools/list, tools/call, ping).
      responses:
        '200':
          description: JSON-RPC response.
        '202':
          description: Notification accepted.
        '401':
          description: Missing or invalid API key (MISSING_API_KEY, INVALID_API_KEY, API_KEY_REVOKED).
        '403':
          description: Origin not allowed for this key (API_KEY_ORIGIN_NOT_ALLOWED).
      operationId: postMcp
      x-operation-id-source: derived
components:
  securitySchemes:
    apiKey:
      type: apiKey
      in: header
      name: X-API-Key