"How to test a React app" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
MCP-native AI browser testing for coding agents. Submit a URL + goal, get back action trail, bugs, screenshots, and WebM video your agent patches from directly. 43 tools, 12 AI evaluation personalities, combo tiers with auto-pause-on-bugs, throwaway email + SMS inboxes.
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
Verify before the agent pays. Screwtape is an independent check on agent work before a payment goes out: invoices, duplicate invoices and reconciliation, with a signed receipt for your auditor. It is independent of your agent's own model and vendor, with no stake in your agent passing. - judge: pass, fail or retry verdict on one agent output, with a score, reasons and a next_step. Optional deterministic checks: required fields, types, formats, sums, regex. - check_duplicate_invoice (/v1/duplicate): opt-in duplicate-invoice check using keyed fingerprints. - consensus: scores agreement across 2 to 16 agent answers and flags false consensus. - Advisory mode: recommends approve, review or return; a person decides. - Receipts: Ed25519-signed. The receipt proves what was checked, when, and the verdict. Verify via POST /v1/receipts/verify or offline; export via GET /v1/receipts/export. - Judged content isn't stored unless you opt in. Free key: 100 calls/day. Or $0.005 USDC per call via x402 on Base or Solana, no key needed. MCP: https://screwtape.ai/mcp Docs: https://screwtape.ai/docs/ Icon: https://screwtape.ai/icon-512.png Tags: verification, evaluation, llm-as-judge, invoices, receipts, x402
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.
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
Design quality gate for AI-generated UI: score any URL on 45 deterministic checks, A–F grade.
Generate synthetic random user data for testing, demos, and development without using real persona.
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…).
Lint a SKILL.md for frontmatter, structure, secrets and size. All 6 tools free.
Load testing and synthetic monitoring platform: test with Playwright, Browser Bot, or Protocol Bots.
The Decision Operations Platform for engineering teams
Risk-scan a diff, flag AI-generated-code tells, find secrets. 5 of 7 tools need no account.
Open a React Native app in a simulated phone: read the screen, tap, type, set device state.
Check a landing page on a real phone and desktop, get the fixes, re-check after you publish.
Behind Second Look (preview): a shop's product page as clean data, source checks, price history.
Test inboxes for your app's sign-up and login emails: get the code or link, or why none came.
Cloud Android 14 phones that Claude, Claude Code, Cursor and Codex can use over MCP. Ready in ~15 s. Plain-English tasks return pass/fail, steps, screenshots and video. 1¢ per phone-minute, AI included, 100 free minutes a month.
QA platform for agents: coverage signals, in-repo test plans, verified tests and release governance.
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.
13 free MCP tools for generating synthetic test data, mock identities, color palettes, SVG avatars, placeholder text, slugs, hashes and random tokens. Built for AI agents, prototyping and software testing.
Audits any live MCP server URL or GitHub repo on Glama's 6-dimension TDQS rubric and compiles drop
32 free MCP tools for data validation, text optimization, and synthetic test data.
Free AI visibility check: can AI crawlers read a site, and do ChatGPT, Gemini, Perplexity cite it?
A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.
Agentic AI quality engineering: run, debug and triage tests on real browsers and devices
Website checker for AI coding agents. Measures your site in a real browser, with evidence.
