Pitcrew

Pay-per-call ops tools for AI agents. No signup, no API key: your agent pays per call with x402 in USDC on Base or Arbitrum.

Tool	What you get	Price
`GET /tx/explain?chain=&hash=`	Why did my transaction fail? Decoded method, revert reason (Error strings, Panic codes, custom errors resolved by signature), gas used vs limit, fee, token transfers, plus a plain-language fix. Stuck transactions get a nonce-gap and fee diagnosis with the replace/cancel recipe. Ethereum, Base, Arbitrum, Optimism, Polygon, BSC.	$0.01
`GET /x402/preflight?url=`	Check an x402 endpoint before paying it. Valid 402 challenge? Which networks, tokens and USD price? Atomic-unit amount errors, testnet-only offers, bad payTo, missing Bazaar schema, redirects, latency. Verdict: payable / warnings / broken.	$0.005
`GET /site/check?url=`	Is it up? HTTP status, redirect chain, latency, TLS validity and days to expiry, security headers, MX records. Verdict: healthy / degraded / down.	$0.005
`GET /fetch?url=`	Web page to clean text. Readable text with headings, title, description, canonical, links.	$0.005

Bad input (unknown chain, malformed hash, unreachable URL) is rejected with a 4xx before payment settles, so you are never charged for it.

Example: a real failed Base transaction

GET https://pitcrew-api.appin60.com/tx/explain?chain=base&hash=0x19149f9b44efbe36f2180fda8389d811ff2de968f3391190f7544e0a55ccf8f9

{
 "status": "failed",
 "method": "submitRecord(uint256,uint256,uint256,uint256,bytes)",
 "gas": { "used": "28490", "limit": "500000", "usedPct": 5.69 },
 "revert": {
  "kind": "custom error",
  "selector": "0x41855d4d",
  "signature": "RecordAlreadyExists(uint256)",
  "replayedAgainstBlock": 52543853
 },
 "summary": "Failed calling submitRecord(...): custom error RecordAlreadyExists(uint256)."
}

Use it from an agent

# any x402 client, e.g. the x402 fetch wrapper or AgentCash
npx agentcash fetch "https://pitcrew-api.appin60.com/tx/explain?chain=base&hash=0x..."

Discovery: openapi.json · /.well-known/x402 · llms.txt · public settlement log: /stats

Payment

x402 v2 exact scheme, settled by the Coinbase CDP facilitator. Accepts USDC on Base (eip155:8453) or Arbitrum One (eip155:42161). Receiving address: 0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83.

Contact

Need a tool that isn't here, or a failed transaction you want a human to dig into? pitcrew@appin60.com

Pitcrew is an independent project, not affiliated with Coinbase or x402.org. Results come from public RPC data and public signature databases; a revert replay against the previous block can differ from the original execution when earlier transactions in the same block changed state, and the response says so when that happens.