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Transaction Explainer
x402
Transaction Explainer is a paid API for AI agents from chain.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-02).
Explains any blockchain transaction in plain English, including status, parties, decoded method/parameters, USD value, fees, and token movements across multiple EVM chains.
Price / call$0.02
Success—
StatusUnknown
How this service works
Explain any transaction in plain English: status, from/to (with names), decoded method and parameters, native value and fee in USD, and every token movement. Default chain Base; prefix another: ethereum:, arbitrum:, optimism:, polygon:. $0.02 per call.
Output
A plain-English explanation of the transaction including: status (success/failed/pending), labeled from and to addresses, decoded smart contract method name and parameters, native token value and fee in USD, and a breakdown of every ERC-20 or other token movement with amounts and USD values.
Example use cases
Debugging a failed DeFi swap
“Can you explain what went wrong in this transaction 0xabc123...def456 on Ethereum? I want to know its status, what method was called, the parameters, and any token movements.”
Auditing an incoming wallet transfer
“Someone just sent me tokens — can you break down transaction 0x7f8e...1a2b on Base in plain English? Tell me who sent it, what tokens moved, the USD value, and the fee they paid.”
Explaining an on-chain action to a non-technical user
“I need to explain this Polygon transaction 0xd4c9...88fa to my client in simple terms — what method was called, what the parameters mean, and how much it cost in USD including gas.”
Technical details
Endpoint
GEThttps://chain.intel.rallylive.ca/tx/explain?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a human-readable, USD-denominated breakdown of a specific transaction across Base, Ethereum, Arbitrum, Optimism, or Polygon — especially when you need decoded method parameters, labeled addresses, and token movement details in one call. Prefer this over raw RPC calls or block explorers when the consumer is a non-technical user or an agent that needs structured plain-English output without parsing ABI data manually.
Side effects
- Invalid or malformed transaction hash returns an error
- Transaction hash not found on the specified chain
- Unsupported chain prefix returns an error
- Unrecognized or unverified contract ABI may result in partially decoded method data
- Network or RPC timeout may delay or fail the response
- Rate limiting or payment failure (x402) blocks the call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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