"Methods to Test API Endpoints" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Independent health, price and history for x402/MPP endpoints. Metered over x402; free grade on web.
Detect breaking changes, generate changelogs, diff, and validate OpenAPI specs.
Any API, four tools: discover, call with routing and signed receipts, verify, dispute.
Guide developers from setup through a verified, policy-aware, audited Alter API call.
SqueezeOS MCP for live machine discovery and x402-paid USDC APIs on Base.
Production proofs for breaking JSON Schema/MCP changes; UNKNOWN/NO_WITNESS_FOUND not compatible.
Your DRF API as MCP tools — 1,800 endpoints become 16 dispatchers, permissioned by Django.
Turn any task into the right API calls: discover, evaluate, and integrate public APIs.
chaos-index MCP — wraps StupidAPIs (requires X-API-Key)
npm MCP — wraps the npm Registry API (free, no auth)
mercury-number MCP — wraps StupidAPIs (requires X-API-Key)
always-seven MCP — wraps StupidAPIs (requires X-API-Key)
Point Claude Code, Qwen Code, Cursor, or any MCP client at https://docs.jmeter.ai/api/mcp and your agent answers JMeter questions grounded in this documentation, with a source link for every answer. Free, no API key, no signup.
Keyless webhook endpoints: capture, wait, replay, forward, and generate types from real traffic.
JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)
Search the JoJ API marketplace, read endpoint docs, and call any API with one key via one gateway.
Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools covering mailboxes, mails, attachments, domains, teams, and mock identities.
yc-rejection MCP — wraps StupidAPIs (requires X-API-Key)
httpbin echo: GET/POST inspection, status codes, delay, UUID, base64. Debug aid.
Apideck Unified API MCP — 330 tools across 200+ SaaS connectors (accounting, CRM, HRIS, ATS).
