"How to check Bitcoin (BTC) balance" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
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.
Validate HTML/CSS, audit SEO and JSON-LD, check links, and capture responsive screenshots.
Agentic code review, no signup to try: reality gates + frontier-model review, with veto.
Give AI coding agents access to your Vynix visual feedback, bug reports, and AI diagnosis.
Kilotest leverages 10 rule engines to test web pages for front-end quality (accessibility, usability, and standards conformity) and report results with specifiable granularity.
Scan any website or MCP server for agent readiness: 0-100 score, a fix per failing check. Free.
Find MCP servers and check whether they actually respond, via live handshake probes.
Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.
Verifies AI agent work end to end: real artifacts and outcomes checked, not self-reported success.
Scores any MCP server before you trust it: free quick check, full paid report, 2-5 way compare.
Check if your MCP server is ready to publish on the MCP Registry, Smithery, or npm.
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.
Real-browser WCAG audit that also finds keyboard-inoperable controls axe-core misses, with fixes.
MCP server providing access to the Scorecard API to evaluate and optimize LLM systems.
Check AI work against requirements and return structured verdicts, findings, and repair steps.
Programmatic email deliverability testing for AI agents. Create inbox placement tests across Gmail, Outlook, Yahoo, Mail.ru, Yandex — get per-provider placement (Inbox/Spam/Promotions), SPF/DKIM/DMARC auth, Rspamd & SpamAssassin verdicts, DNS health, and live SSE results.
MCP server for AI access to SmartBear tools, including BugSnag, Reflect, Swagger, PactFlow, QTM4J.
