"Developing agents with expertise in the latest documentation" matching MCP connectors:

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.

Prompt evals over MCP: run a prompt on your dataset, score each output 1-5 with an LLM judge.

Evidence-gated task verification for AI agents. Decompose goals into acceptance criteria, attach proof (screenshot, curl, file), independent LLM judge accepts or rejects. 24 tools. Hosted remote MCP (streamable-http, OAuth 2.1 + DCR).

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.

Testing, benchmarking and auditing autonomous AI agents — methods, harnesses, evidence

Verify scraped data against the live source page. Signed verdicts, $0.01 via x402.

Seven tools over the tabnas parsing engine: parse, validate, diagnose, fixtures, compare.

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.

X-Z-CS AI validation with auditable reasoning. 8 active tools; 5 in maintenance. v0.5.62

Voice-powered bug reporting with 13 MCP tools. Record bugs by talking; let AI find and fix them.

A fully free linter for agent skill files: lint_skill validates YAML frontmatter, structure, size budgets, and safety phrasing with a pass/fail verdict; packaging_check validates zip layout against marketplace rules; plus regex_test, json_validate, diff_texts, and cron_explain for skill authors. No license or account required.

Give AI coding agents access to your Vynix visual feedback, bug reports, and AI diagnosis.

Benchmark-first release surface with a read-only MCP endpoint and operator CLI.

Preflight QA for AI-agent deliverables with structured verdicts and repair guidance.

Accessibility pre-checks (WCAG/BFSG) in a real browser + statement drafts. Pay per call.

Deterministic JSON checks with signed evidence and x402-paid execution

MCP server: NEED + YIELD + CLEAN-MONEY gates with EIP-3009 attestations · Hive Civilization

Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.