"How to browse the internet" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Author and validate Calaf workspace seeds against the app's real importer. No account needed.
Simulate, test, and analyze cloud architectures without deploying real infrastructure. Cloud World Model enables AI agents to model cloud environments, evaluate architecture behavior and costs, run failure and chaos simulations, and explore infrastructure scenarios across cloud providers.
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
Check that your AI is being logical. Free tool that mathematically catches contradictions in agent reasoning. No account needed. Also offers paid guardrails that converts natural language to formal verification proofs, that anyone can check succinctly.
Seven tools over the tabnas parsing engine: parse, validate, diagnose, fixtures, compare.
JSON Schema validation MCP.
Give AI coding agents access to your Vynix visual feedback, bug reports, and AI diagnosis.
Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.
Runs your code against a contract; returns HELD or BROKE at the exact input. Deterministic.
Verifies AI agent work end to end: real artifacts and outcomes checked, not self-reported success.
Read-only MCP server for the OPERANT AI operating-agent calibration benchmark.
Test the voice agents you run: scored transcripts, pass/fail verdicts, latency and WER metrics.
Check if your MCP server is ready to publish on the MCP Registry, Smithery, or npm.
PQS scores any prompt before the model runs. 8 dimensions. 5 frameworks. Pre-flight, not post-hoc.
MCP server for the Fail Modes taxonomy — a knowledge base of AI system failure modes
The world's first named AI prompt quality score. Score, optimize, and compare LLM prompts before they hit any model. Free tier available. Built on PEEM, RAGAS, G-Eval, and MT-Bench frameworks. x402-native on Base.
Validate up to 75,000 URLs per job (status, redirects, response times). OAuth 2.1.
End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.
DummyJSON mock REST: products, users, posts, recipes, todos. Keyless test data.
