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Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.
Independent health, price and history for x402/MPP endpoints. Metered over x402; free grade on web.
Discover, pay for, execute, and publish APIs through Apiosk.
Mock REST APIs + uptime monitors, heartbeats, status alerts for agents: seed, import, query, write.
Experimental MCP server for current empirical verification of explicit public HTTPS endpoint claims.
Webhook capture bins for agents: get a URL, wait for webhooks, set replies, verify signatures.
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.
Read-only ArcadeOps discovery for developer docs, OAuth, OpenAPI and synthetic sandbox.
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.
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.
Anonymous webhook capture, inspection, waiting, and response configuration for AI agents.
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.
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
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
A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.