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Ethereum Transaction Explainer
x402
Ethereum Transaction Explainer is a paid API for AI agents from automaton-tx-explainer.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Explains an Ethereum transaction by returning its status, fee, decoded method name and arguments (via openchain signature DB), and ERC-20 token transfers with symbols and human-readable amounts.
Price / call$0.01
Success—
StatusUnknown
How this service works
Explain a Ethereum transaction: status, fee, decoded method + args (openchain signature DB), and ERC-20 transfers with symbols and human amounts.
Output
Returns the transaction status (success/failure), gas fee paid in ETH, the decoded contract method name and its arguments sourced from the openchain signature database, and a list of ERC-20 token transfer events with token symbols and human-readable decimal amounts.
Example use cases
Debugging a failed DeFi swap
“This Ethereum transaction failed and I want to understand why — can you explain what happened with 0x3d8e0f5c1a2b4e9f7c6d3a1b8e2c5f0d4a9b7e3c1d8f2a5b0e7c4d9f6a3b1e8c, what method was called, and how much gas was wasted?”
Auditing a token transfer event
“I need to verify that this Ethereum transaction 0x7a2f1e4c9b0d3e8f5a6b2c1d9e3f0a4b7c8d5e2f1a9b6c3d0e7f4a1b8c5d2e9f actually sent USDC and confirm the amount and recipient — can you decode it for me?”
Tracking a whale's on-chain activity
“What did this Ethereum transaction do — 0x1f4a7b2e9c0d5f8a3b6c1e4d9f2a5b8c3e0f7a4d1b9e6c3f0a7d4b1e8c5f2a9b — which smart contract method was invoked and were there any ERC-20 transfers involved?”
Technical details
Endpoint
GEThttps://automaton-tx-explainer.vercel.app/v1/ethereum/tx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a human-readable breakdown of a specific Ethereum mainnet transaction, especially to decode contract method calls and identify ERC-20 token flows. Prefer it over raw RPC calls (eth_getTransaction) when you need decoded function signatures and readable token amounts without building your own ABI/signature lookup pipeline.
Side effects
- Invalid or malformed transaction hash returns a 400 error
- Transaction hash not found on Ethereum mainnet
- Method signature not found in openchain DB — calldata may be shown undecoded
- Payment not included or insufficient — returns 402 Payment Required
- Rate limiting or provider downtime on underlying RPC — returns 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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