"How to send emails" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Test and debug your AI agent's Web Bot Auth (RFC 9421) signature: is it valid, and what to fix?
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.
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.
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
Audit and build email signatures that survive Gmail, Outlook desktop and Apple Mail.
Author and validate Calaf workspace seeds against the app's real importer. No account needed.
AI users run real tasks on your live site and show where they get stuck, with a replay of every step
Review frontend code and live pages against 386 quality-gated web development rules.
Agentic code review, no signup to try: reality gates + frontier-model review, with veto.
Web search, email verify, KYC, sanctions, stocks, SEC, crypto, news, data: 63 pay-per-call tools
Deterministic check of logged service hours: bad dates, impossible totals, duplicates. No AI.
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.
Probe a signup URL you own and score whether an AI agent can sign up unaided.
Test an email before it goes out: a disposable address, 41 checks with RFC citations, a fix plan.
Scores any public website on how usable it is by AI agents, with per-check evidence.
Regex matching, email/URL format validation, and JSON Schema validation.
Give AI coding agents access to your Vynix visual feedback, bug reports, and AI diagnosis.
