"Connecting to a custom platform and performing API actions" matching MCP connectors:

Generate synthetic random user data for testing, demos, and development without using real persona.

Workflow planning, recovery checkpoints, coordination, fixtures, and compatibility tools for agents.

Drive real Android & iOS devices and web browsers from natural language for mobile + web QA. 145+ tools across device control, app management, automation sessions, browser automation, and flow recording / replay. Bearer-auth — get a token at robotactions.com → Profile → API Tokens.

Moderated usability testing: read sessions, notes, transcripts, reports, and draft test scenarios.

Prompt evals over MCP: run a prompt on your dataset, score each output 1-5 with an LLM judge.

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

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.

Score any URL against a real design contract — 40 checks, A-F grade, token + motion validation.

Deterministic motion compiler + validator: reports WCAG 2.2.2 pause-path candidates, fail-closed.

AgentReady.market audit: can an AI shopping agent find, understand and BUY on this store? /100.

Post-scrape data cleaner, no LLM: repairs mojibake, HTML, invisible chars. Plus a verdict.

Agentic code review, no signup to try: reality gates + frontier-model review, with veto.

A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.

Preflight QA for AI-agent deliverables with structured verdicts and repair guidance.

Deterministic JSON checks with signed evidence and x402-paid execution

Accessibility pre-checks (WCAG/BFSG) in a real browser + statement drafts. Pay per call.

Verifies AI agent work end to end: real artifacts and outcomes checked, not self-reported success.

Voice-powered bug reporting with 13 MCP tools. Record bugs by talking; let AI find and fix them.

Continuous website testing by Validoria — monitor security, SEO, performance, and accessibility.

Verifier-grounded AI promotion gates, disposable report cards, and signed PASS/HOLD/BLOCK receipts.