"Free image analysis tool" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.
Author and validate Calaf workspace seeds against the app's real importer. No account needed.
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
Whether a registry MCP server works for a stock client, and what changed in its tools. Free, no key.
Lint a SKILL.md for frontmatter, structure, secrets and size. All 6 tools free.
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.
Free tools: 2026 API shutdown scanner, small-business website auditor, photo resale estimator.
Benchmark MCP tool selection with metadata-only routing, collision, abstention, and holdout checks.
Regression checks for Japanese order automations: six free cases, strict JSON scoring and CI gates.
Test FIX from Claude, ChatGPT, or Cursor: free sandbox FIX sessions or your own FIXSIM instances.
Scores any public website on how usable it is by AI agents, with per-check evidence.
Validates JSON against a JSON Schema, lists violations. x402 payment required (testnet USDC).
Security scanner for n8n workflows: 18 rules, OWASP Agentic mapped. Free MCP, paid x402 API.
Six checks: llms.txt, llms-full.txt, .md twins, Accept: text/markdown, sitemap.md, alt link. Free.
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.
Build and test FaceSign step-up verification flows from your AI coding tool
MCP tool observatory: do registry servers answer, and are their answers true? No key.
Scan any website or MCP server for agent readiness: 0-100 score, a fix per failing check. Free.
Paid x402 MCP tool for stress-testing launch and marketing copy before publication.
49 deterministic tools for text integrity, agent control, and contextual quality evidence.
