"The number 555" 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.
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.
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.
Read and submit the CurlShip directory. Paid actions return checkout_url.
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.
npm MCP — wraps the npm Registry API (free, no auth)
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.
What is known to be broken in an MCP server or API operation, with the check that found it.
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.
Search the JoJ API marketplace, read endpoint docs, and call any API with one key via one gateway.
TE / transfer-encoding token shape
Swagger Petstore API (v1.0.27) as MCP for testing and prototyping powered by the HAPI MCP server
mercury-number MCP — wraps StupidAPIs (keyless — no credential needed)
the-committee MCP — wraps StupidAPIs (keyless — no credential needed)
Search a catalog of tools and APIs, inspect endpoint schemas and prices, and run endpoints from an MCP client. Runs can use a prepaid workspace balance. The hosted server supports OAuth and bearer authentication.
The official MCP Server for the Mux API
