"How to work with Google Sheets" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Validate and clean CSV before import. Find duplicates, missing values and invalid dates with row-level reports. Apply only the cleanup you request; files are not retained. Run view_csv_demo free without a key. Custom CSV: EUR 9 for 100 operations, valid 90 days, no subscription. Setup: https://check.orvel.dev/docs/
Test and debug your AI agent's Web Bot Auth (RFC 9421) signature: is it valid, and what to fix?
Listing Observer preview: a shop product page as clean data, with source checks and price history.
GodPrompt MCP + Agent Skill for coding agents with TDD, debugging, verification, and task routing.
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.
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
Rule engine with built-in simulation. 55 MCP tools for complete business rule lifecycle management.
Load testing and synthetic monitoring platform: test with Playwright, Browser Bot, or Protocol Bots.
Deterministic JSON checks with signed evidence and x402-paid execution
AI users run real tasks on your live site and show where they get stuck, with a replay of every step
Inspect external HTTPS 429/503 retries with server-recorded attempts, Retry-After and arrival times.
Fail-closed, change-aware verification for AI coding agents with affected-test guidance.
Prompt evals over MCP: run a prompt on your dataset, score each output 1-5 with an LLM judge.
Hosted: plan and build multi-table test and demo data, export 25 formats, with checks shown.
Deflated Sharpe and PBO checks. A verdict is not admission to anything and is not a forecast.
Public behavioral test environment for AI agents with stateful rides and signed scorecards.
