"How to obtain an API key" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Test healthcare AI agents' medication claims against cited FDA label text. Not for clinical use.
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
Design quality gate for AI-generated UI: score any URL on 45 deterministic checks, A–F grade.
Run after each discovery iteration to see what's still uncertain, who to ask next, and what changed.
HefestoAI checks AI-generated code before you ship it.
Verify AI-generated code before you commit: independent reviewers check it. PR review too.
Read the verification code (OTP) and test emails your app sends to a catch-all test hostname. Four read-only tools: list_domains, get_latest_otp, list_messages, get_message. Needs a MailBots API key from the 14-day free trial (no card, no DNS) or a paid plan. Setup: https://mailbots.top/docs/mcp
Test inboxes for your app's sign-up and login emails: get the code or link, or why none came.
Cloud Android phones for AI agents: give phones a task in plain words and get the answer
Web animation accessibility MCP: GSAP, static CSS checks, prefers-reduced-motion, WCAG 2.2.2/2.3.3.
Screwtape.ai decides whether an AI agent is allowed to spend money, and keeps the proof. Before an agent pays an invoice or payment instruction, it sends it to Screwtape.ai: check_duplicate_invoice (POST /v1/duplicate, free Bearer key or x402 per call) checks it against invoices that key already recorded, runs the checks you pass (for example line items that must add up to the total) and judges it against your evidence, such as the purchase order. judge (POST /v1/judge) gives pass, fail or retry on any agent output; consensus (POST /v1/consensus) flags false consensus across 2 to 16 agent answers. Every verdict carries an Ed25519-signed receipt anyone can verify at POST /v1/receipts/verify. judge and consensus can be paid per call with x402 ($0.005 USDC on Base or Solana, no account); a free key gives 10 calls per UTC day.
Run accessibility, contrast, and design token audits and file QA issues from your AI coding tool.
Order human-run real-device app tests from your coding agent; verified bugs return as fix prompts.
Load testing and synthetic monitoring platform: test with Playwright, Browser Bot, or Protocol Bots.
Adversarial testing for AI agents that move money: engine battery, Ed25519-sealed verdict reports.
Free AI visibility check: can AI crawlers read a site, and do ChatGPT, Gemini, Perplexity cite it?
Fact-check LLM outputs with cited sources. API key: aihcc.cloud/keys.
The Decision Operations Platform for engineering teams
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.
The beta program platform for hardware and IoT teams, who run structured betas with their own testers. Connect your AI assistant to build tasks and steps, screen applicants, triage tickets, read results and track tester progress. Actions that reach testers return a preview first and take effect only after confirmation. Sign in with OAuth, with read-only or read and write access. Stomio does not recruit testers.
Your AI designs live on the UX Pilot canvas or runs its design agent: reviews, React, video, media
Generate synthetic random user data for testing, demos, and development without using real persona.
A playground for AI agents. Send your bot to recess; you get its school report card.
Agentic AI quality engineering: run, debug and triage tests on real browsers and devices
Code review for your coding agent's changes: a cloud bug hunt. From $4; $0 if clean or minor-only.
AI QA for coding agents. TestOptim explores your web app, generates end-to-end tests and reports bugs with severity. Over MCP, Claude Code, Cursor or Copilot can start a test run on just the pages they changed, poll the result, and read the issues it found. Authenticate with a TestOptim API key as a Bearer token.
EU cookie-consent & tracker audit, run like a real first-time visitor (EU proxies). Free quick check, no account. Finds trackers and tracking cookies before consent, missing first-layer Reject, what still fires after Reject, Google Consent Mode v2 state per signal, plus Google Fonts/YouTube/Maps/reCAPTCHA. Every finding comes with the exact request as evidence and a concrete fix, in 13 languages. Weekly monitoring, white-label PDF for agencies, private share links. Works with any CMP (Cookiebot, Usercentrics, Complianz, CookieYes, Borlabs…).
Bug bash apps and PRs with Mo, review findings, and list Momentic test runs and quarantines.
Check public web pages for common WCAG 2.2 accessibility issues from your MCP client. The free scan_url tool needs no account and returns a score, severity breakdown, WCAG references, affected elements and fix guidance. Automated checks do not establish conformance; manual review is still required. Optional authenticated tools support monitoring your own sites. Documentation: https://allyproof.com/docs/mcp
12 free MCP tools for local validation of emails, URLs, IP addresses, IBANs, dates, UUIDs, JSON and other structured inputs. No API key or external verification service required.
Catch process drift and quality problems before they become defects.
Website monitoring for AI assistants: catches pages that look broken even when the site is up.
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.
Headron Mind: hosted verification planning and proof for AI coding agents, over MCP and API.
Test a web app in a real browser from plain English. Passed, failed or cannot verify, with evidence.
Check an online store's product catalog before you import it or send it to a shopping feed.
Is your website ready for AI agents? 0-100 score, A-F grade and fixes. By Crypto Money Maker
15 deterministic AI agent and developer tools for code context pruning, token budgeting, hybrid search reranking, self-healing patches, AST analysis, circular dependency detection, root-cause isolation, schema compilation, math/financial solving, critical-path scheduling, A/B testing, memory diffs, API compatibility checks, boundary test generation, and Monte Carlo risk simulation.
Disposable, receive-only email inboxes for AI agents. Create an address, wait for the verification email, and get the one-time code or magic link back as structured fields. Long-polling wait_for_email with sender and subject filters, attachments, sanitised HTML, and restore for later password resets. OAuth 2.1, hosted in the EU, cannot send email.
Check one web page for broken links, redirect chains hop by hop and mixed content. Free, no key.
