API Development MCP Servers for HTTP / API

HTTP status code reference MCP.

One MCP endpoint over 69 public PPN APIs: search_apis to discover, execute_api to call. Free tier.

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Any API, four tools: discover, call with routing and signed receipts, verify, dispute.

AI-native mock API server with MCP. Create REST/SOAP mocks from Claude, Cursor, or Windsurf.

MCP server for AI access to Swagger by SmartBear.

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Unified.to MCP server — one API for 500+ B2B SaaS integrations across 28+ categories

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Send, retry and monitor webhooks: manage endpoints, event types and API keys (OAuth).

Ephemeral HTTPS inbox for bots: mint URL, capture POSTs, list JSON. TEST. https://inbox.kymac.co

Build, validate, and manage API simulations in WireMock Cloud from MCP-compatible AI agents.

Discover and call 10,000+ production APIs from one MCP server. Pay-per-call billing for AI agents.

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Cloudflare Workers MCP server: api-contract-validator

Sixteen years of API research as MCP tools — stories, areas, governance blocks & services

Signed, offline-verifiable contract-change authorization. Only a granted change can proceed.

Cloudflare Workers MCP server: api-mock-server

Cloudflare Workers MCP server: api-payload-auditor

Cloudflare Workers MCP server: api-perf-analyzer