"How to Trigger an n8n Workflow" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
Connect Claude, ChatGPT, Cursor or any MCP client to Ybug. Read bug reports with screenshots, console logs and network requests, then triage them in chat.
Drive and test your React Native and Expo apps end-to-end on iOS and Android. Supports real devices, simulators, and emulators. Snapshots, taps, typing, swipes, screenshots, deep links, reloads, builds and runtime errors.
Test and debug your AI agent's Web Bot Auth (RFC 9421) signature: is it valid, and what to fix?
Diagnose why an AI agent failed and get the verified fix instantly. Free, no token.
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/
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.
Run, debug, and triage tests from your IDE using natural language, no dashboard switching, no manual data transfers. The TestMu AI (formerly LambdaTest) MCP Server is a single remote server exposing four tool suites: HyperExecute — analyze your project, generate YAML configs and test runner commands, then monitor jobs and sessions. Automation — pull a TestID's details plus command, network, and console logs into one chat for instant root-cause analysis. Includes mobile app upload. SmartUI — explain pixel, layout, DOM, and perceptual changes in a visual regression run, with context-aware React/HTML/CSS fixes. Accessibility — audit any public URL or a local React app against WCAG and get ready-to-apply remediation steps. Connects over https://mcp.lambdatest.com/mcp using OAuth 2.1 — no API keys in your config. One-click install in Cursor; works with Claude, GitHub Copilot, Cline, and any MCP client. Tests execute on the TestMu AI cloud: 3,000+ browsers and 10,000+ real devices.
An open-source benchmark of how well LLMs solve nonogram puzzles, from 5x5 to 20x20.
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.
Kilotest leverages 12 rule engines to test web pages for front-end quality (accessibility, usability, and standards conformity) and report results with specifiable granularity.
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
Assign Linear, Jira or GitHub issues to an AI coding agent team that plans, builds, reviews, tests.
A real Android phone in the cloud for MCP agents: observe the screen, act, reset to a saved state.
Workflow planning, recovery checkpoints, coordination, fixtures, and compatibility tools for agents.
Reconstruct helps AI coding agents recreate digital products with high visual and functional fidelity, or combine ideas and interface patterns from multiple products into a new experience. Agents work from captured evidence and verify the result against real references instead of guessing from screenshots. The MCP server provides screenshots, element trees, measured layouts, computed styles, typography, assets, routes, recorded user flows and frontend technology insights. It exposes 60 tools, 16 resources and nine workflow skills for inspecting, designing, building and verifying products in the user’s stack. Access uses browser-based OAuth and requires a Reconstruct account. Captured content is treated as untrusted reference data; new capture requests are submitted only when the user asks.
Agentic testing: HyperExecute jobs, test failure triage, SmartUI visual diffs, a11y audits
Prompt evals over MCP: run a prompt on your dataset, score each output 1-5 with an LLM judge.
Checks a public website in six areas and returns scores from 0 to 100. Free, no key needed.
Does an MCP server work for a stock client? By registry name or URL. Tool drift too. Free, no key.
