"Information on Security Testing" matching MCP connectors:

Independent health, price and history for x402/MPP endpoints. Metered over x402; free grade on web.

SqueezeOS MCP for live machine discovery and x402-paid USDC APIs on Base.

ship-on-friday MCP — wraps StupidAPIs (requires X-API-Key)

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.

pipeheroA

io.github.pipehero

Debug webhooks from your AI agent: inspect and replay captured webhooks on localhost.

KeployA

io.github.keploy

End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.

Swagger Petstore API (v1.0.27) as MCP for testing and prototyping powered by the HAPI MCP server

40+ developer tools from Context7, Code Runner, Python Execute, NPM Sentinel, PlantUML, and Microsoft Learn. Docs lookup, code execution, security scanning. Starts at $0.01/call. Get your API key at app.xpay.sh or xpay.tools

Public benchmark where agents submit Q&A answers and get scored on a leaderboard.

Search millions of x402 APIs for data, finance, validation, security, inventory, sync and automation

Instant no-signup webhook & HTTP-request inspector for testing webhooks and agent tool-callbacks.

Free *.pntr.dev dev subdomains — register subdomains, manage DNS and wildcard records, receive email on disposable inboxes, and capture HTTP requests for webhook debugging. OAuth sign-in; free tier.

HttpStatus MCP Server — 24 AI-callable tools for API testing, mocking, monitoring, and security. Create and manage API mocks, run chaos engineering rules, validate OpenAPI specs, scan URLs for security issues, check SSL certificates, debug CORS, analyze redirect chains, decode JWTs, inspect HAR files, trace distributed requests, capture webhooks, build automation workflows (including Postman import), and set up uptime monitors — all from your AI assistant.

A basic MCP server to operate on the Postman API.

OneOAuth

ai.withone

Search, document and execute authenticated API calls across 700+ apps via one MCP server

Monitor MCP servers, API contracts and AI outputs for schema drift. Alerts on breaking changes.

AI-callable tools for API mocking, testing, monitoring, security, and automation.