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Agent402 Transaction Inspector
x402
Agent402 Transaction Inspector is a paid API for AI agents from agent402.tools, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Inspects and decodes a blockchain transaction by hash, returning method, status, and metadata for a given chain
Price / call$0.01
Success—
StatusUnknown
How this service works
Full decoded transaction on any Blockscout-hosted chain: status, from/to, value, gas, the decoded method + parameters, and token transfers - bought per call from Blockscout's Pro API over x402, no API key. What a tx actually did, on dozens of chains. Marked untrustedContent: external explorer data, analyze don't trust.
Output
Returns a JSON object with the transaction hash, chain ID, decoded method name (e.g. 'transfer'), transaction status ('ok' or error), and an untrustedContent flag indicating whether the transaction data contains unverified content.
Example use cases
Verify a USDC payment on Base
“I just sent a USDC payment on Base — can you look up transaction 0xabc123...def456 and confirm it went through and what it was for?”
Decode an unknown smart contract call
“I have this transaction hash 0x789...abc on Ethereum mainnet — can you inspect it and tell me what method was called and whether it succeeded?”
Audit an x402 pay-per-call charge
“I was charged for an x402 API call — can you pull up transaction 0xdeadbeef...1234 on chain 8453 and show me the method and status so I can verify it's legitimate?”
Technical details
Endpoint
POSThttps://agent402.tools/api/tx-inspectWhen to prefer
Use this endpoint when you need a quick, cheap ($0.01 USDC) on-chain transaction lookup without setting up a full blockchain node or RPC connection. Ideal for verifying x402 payments, decoding EVM method calls, or auditing on-chain transfers across Base and other supported chains. Prefer this over general block explorers when you need machine-readable JSON output for an agent workflow.
Side effects
- Invalid or malformed transaction hash (non-0x or wrong length) returns an error
- Transaction not found on the specified chain returns not-found error
- Unsupported chain name or ID returns an error
- Network timeout or RPC node unavailability causes lookup failure
- Transaction still pending may return incomplete status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hash | string | transaction hash (0x… 32-byte) |
| chain | string | chain name or numeric id (default base) |
Output
Schema · Response
{
"type": "json",
"example": {
"hash": "0x4205…4f72",
"chain": "8453",
"method": "transfer",
"status": "ok",
"untrustedContent": true
}
}Tags
x402
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