ToolAssay

Every agent tool, tested by us, every day.

Other markets copy the list of x402 tools and show you what the providers claim. We call each one ourselves and publish what happened: whether it answered, how fast, and what it really charged.

17,062tools listed
15,454checked on 2026-09-24
13,872answered correctly
1,143asked more than their listed price
385not answering properly

Browse by category

Image and media (606)Code and developer (2,451)Company and compliance (998)Commerce and shopping (352)Market data (4,391)Search and research (1,100)Everything else (7,164)

Caught asking more than they list

What the tool asked when we called it, against the price it publishes. An agent trusting the listing pays the difference.

AI white-box audit of your x402 payment integration source (JS/Py/Go) against th
Asked 5000.0x its listed price for its own example minia2a.uk listed $0.01, asks $50.00 answered 1 of 1 checks this week 343 ms Code and developer
Smart contract security audit, solidity/rust/move vulnerability scan
Asked 2000.0x its listed price for its own example minia2a.uk listed $0.01, asks $20.00 answered 1 of 1 checks this week 340 ms Code and developer
Audit short landing-page copy for clarity, outcome, call-to-action, and readable
Asked 1000.0x its listed price for its own example zerostart-agent.jack-labs.workers.dev listed $0.01, asks $10.00 answered 1 of 1 checks this week 362 ms Code and developer
Eve’s current one-line paper pick on a live Polymarket market
Asked 1000.0x its listed price for its own example www.watchevelive.com listed $0.05, asks $50.00 answered 1 of 1 checks this week 1261 ms Market data
Black-box check
Asked 500.0x its listed price for its own example minia2a.uk listed $0.01, asks $5.00 answered 1 of 1 checks this week 342 ms Code and developer
Summarize+SEO+grammar+stats+slug
Asked 300.0x its listed price for its own example minia2a.uk listed $0.01, asks $3.00 answered 1 of 1 checks this week 340 ms Search and research
Crypto brief in one call
Asked 200.0x its listed price for its own example minia2a.uk listed $0.01, asks $2.00 answered 1 of 1 checks this week 339 ms Market data
Email security checks — spoofing, DMARC, SPF
Asked 200.0x its listed price for its own example minia2a.uk listed $0.01, asks $2.00 answered 1 of 1 checks this week 348 ms Everything else
Macro market signals API for agents
Asked 100.0x its listed price for its own example api.seerium.xyz listed $0.001, asks $0.1 answered 1 of 1 checks this week 999 ms Market data
Black-box check
Asked 100.0x its listed price for its own example minia2a.uk listed $0.05, asks $5.00 answered 1 of 1 checks this week 1275 ms Code and developer

Most used tools that answered today

Send a Base token contract address, get an AI-written verdict
Answering www.ax1.vc listed $0.02 answered 1 of 1 checks this week 1444 ms Market data
AI chat completions API
Answering blockrun.ai listed $0.002 answered 1 of 1 checks this week 201 ms Everything else
Exa Search
Answering stableenrich.dev listed $0.01 answered 1 of 1 checks this week 262 ms Search and research
Get SmartMoney trading activities on token (sorted by time descending)
Answering x402.sniperx.fun listed n/a answered 1 of 1 checks this week 523 ms Market data
Read a web page and extract content as markdown with screenshot
Answering win.oneshotagent.com listed $0.002 answered 1 of 1 checks this week 415 ms Search and research
Email deliverability verification
Answering win.oneshotagent.com listed $0.001 answered 1 of 1 checks this week 570 ms Everything else
Exa /search endpoint
Answering api.exa.ai listed $0.007 answered 1 of 1 checks this week 173 ms Search and research
Exa Contents
Answering stableenrich.dev listed $0.002 answered 1 of 1 checks this week 260 ms Everything else
Anthropic-compatible Messages API — pay per token with USDC on Base
Answering blockrun.ai listed $0.011 answered 1 of 1 checks this week 207 ms Market data
Get KOL trading activities on token (sorted by time descending)
Answering x402.sniperx.fun listed n/a answered 1 of 1 checks this week 394 ms Market data
Get Whale trading activities on token (sorted by time descending)
Answering x402.sniperx.fun listed n/a answered 1 of 1 checks this week 203 ms Market data
Profile enrichment from LinkedIn URL
Answering win.oneshotagent.com listed $0.005 answered 1 of 1 checks this week 394 ms Everything else

All tools that answered →

For agents

Connect our MCP server and search tested tools from your own harness: https://lucaintini.ai/toolassay/mcp. Or use the JSON API at https://lucaintini.ai/toolassay/api/v1/search?q=web+search.