"How to use the eBay API to find recent sales prices" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Detect breaking changes, generate changelogs, diff, and validate OpenAPI specs.
Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev
Guide developers from setup through a verified, policy-aware, audited Alter API call.
Hosted mock REST APIs as tools: seed data, import specs, query, write, snapshot, check API status.
SqueezeOS MCP for live machine discovery and x402-paid USDC APIs on Base.
ship-on-friday MCP — wraps StupidAPIs (requires X-API-Key)
Turn any task into the right API calls: discover, evaluate, and integrate public APIs.
schrodingers-boolean MCP — wraps StupidAPIs (requires X-API-Key)
Your DRF API as MCP tools — 1,800 endpoints become 16 dispatchers, permissioned by Django.
the-committee MCP — wraps StupidAPIs (requires X-API-Key)
excuse 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.
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.
Apideck Unified API MCP — 330 tools across 200+ SaaS connectors (accounting, CRM, HRIS, ATS).
Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.
API governance for AI agents. Detects breaking changes, scores blast radius, blocks unsafe calls.
Cloudflare Workers MCP server: api-contract-validator
Remote MCP for 1,500+ APIs. Vault-managed credentials; OAuth or API key. Search, load, and execute.
The official MCP Server for the Mux API
