The real catalog of tools for AI agents

Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.

Clean Markdown from any URL with Litmus trust signals. $0.005 per page via x402, no account.

Lab results for phthalates and bisphenols in consumer products, plus crowdfunded testing.

Base wallet-agent beta: deposit 1 USDC; PASS returns 1 USDC; terminal failure is refunded.

A/B experiment runner for the A2A network with x402 micropayments on Base USDC.

Generate realistic, FK-consistent synthetic test data for your databases from your AI assistant.

Testing publish command

Test server

Verify your agent's x402 payment flow for free on Base Sepolia testnet before real money moves.

Premium test server verified via DNS-TXT.

Public ISO 3166-1 record for PH.

Find psychological self-assessment tests in English, Spanish and Russian, with links to take them.

Canadian citizenship test practice: verified questions, mock tests, IRCC stats, eligibility tools.

Alpic Test MCP Server - great server!

Cash-pay lab tests: catalog search, all-in quotes by state, draw sites by ZIP, reviewed ranges.

Free human usability tests for agent-built websites. Submit tasks; get written findings as JSON.

Original art from galleries and artists: semantic search, provenance, live availability.

3rd Generation Testing (3TG) — generate deterministic test suites from Markdown spec tables via MCP.

[TEST] TradeOS MCP bridge: ticker search, My Agent, chart TA, macro news. npm or HTTP.

IELTS writing practice, study plans, lessons and vocabulary with optional account tools.