"How to Use the WeChat Developer Assistant" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Uxia brings AI user testing, usability testing and UX research into ChatGPT. It helps product managers, UX designers, researchers and developers evaluate websites, interactive prototypes and digital product experiences using AI-simulated users. Explore potential usability problems, investigate friction in user journeys and use findings to guide product and design improvements.
Diagnose why an AI agent failed and get the verified fix instantly. Free, no token.
An open-source benchmark of how well LLMs solve nonogram puzzles, from 5x5 to 20x20.
Kilotest leverages 12 rule engines to test web pages for front-end quality (accessibility, usability, and standards conformity) and report results with specifiable granularity.
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.
UI Verify is visual regression testing built for coding agents. Connect the MCP server and your agent (Claude Code, Cursor, Codex) pulls a pull request's UI changes into the conversation, views each visual diff, reads the AI judge's verdict of regression vs intended change, and accepts the intended baselines - all over MCP.
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
Caller-specific static MCP capability fit evidence. No live probing; caller owns the decision.
Author and validate Calaf workspace seeds against the app's real importer. No account needed.
A digital audit for small-business websites: a score out of 100 and the main problems.
Validate CSV columns, find duplicates and invalid values, and clean files with explicit rules. Row-level reports, no stored files. Run the fixed free sample without a key. Custom CSV: EUR 9 for 100 operations, valid 90 days, no subscription. Setup: https://import-check-production.up.railway.app/docs/
Agentic code review, no signup to try: reality gates + frontier-model review, with veto.
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.
Runs your code against a contract; HELD or BROKE at the exact input. Deterministic. 0.10 USDC/call.
Deflated Sharpe and PBO checks. A verdict is not admission to anything and is not a forecast.
What is known to be broken in an MCP server or API operation, with the check that found it.
Seven tools over the tabnas parsing engine: parse, validate, diagnose, fixtures, compare.
A deterministic verification engine for agents. Proves a fix: fails on the old code, passes on new.
Probe a signup URL you own and score whether an AI agent can sign up unaided.
Checks the structural integrity of translated resource dictionaries against a source dictionary y...
