"General Inquiry about the Number 1" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
See which AI models fall for traps in everyday jobs, and check or scan any MCP server, skill or package before your agent installs it. No sign-in; read-only; returns structured data.
Find and live-check the paid x402 API for an agent task, ranked by real 30-day payers and price.
Write, check, render and save sequence diagrams with the request and response on every arrow.
Pair-level MCP+A2A conformance verdicts for the exact pair you delegate across.
Contract-change authorization for AI agents: preflight a change to an API or MCP contract, get a signed decision, and verify the receipt offline. Only a granted change can proceed.
Read and submit the CurlShip directory. Paid actions return checkout_url.
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
API documentation drifts away from the running service, so consumers integrate against a contract nobody keeps. Routebase keeps API design, testing, mocking and documentation on one living source of truth, and this MCP server exposes that workspace to AI agents. Agents can design endpoints, write and run test suites, manage mock servers and publish documentation, always under the permissions of the connected Routebase account.
Search and read the Flowie Exchange API docs and OpenAPI contract. No sign-in needed.
Lints whether a paid API's 402 response speaks the x402 protocol correctly.
50-vector prompt-injection, llms.txt poisoning, SSRF & OpenAPI scanner ($1 USDC).
What is known to be broken in an MCP server or API operation, with the check that found it.
mercury-number MCP — wraps StupidAPIs (keyless — no credential needed)
Webhook URLs for AI agents: receive, wait for, replay, sign and verify webhooks (Stripe, GitHub…).
Turn any task into the right API calls: discover, evaluate, and integrate public APIs.
the-committee MCP — wraps StupidAPIs (keyless — no credential needed)
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key
Search the JoJ API marketplace, read endpoint docs, and call any API with one key via one gateway.
Swagger Petstore API (v1.0.27) as MCP for testing and prototyping powered by the HAPI MCP server
npm MCP — wraps the npm Registry API (free, no auth)
