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LogicNodes EVM Log Decode
x402
LogicNodes EVM Log Decode is a paid API for AI agents from logicnodes.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-28).
Decodes a raw EVM event log into human-readable fields using a provided ABI and log topics/data
Price / call$0.001
Success—
StatusUnknown
How this service works
Exact answers for AI agents: 40+ tools for EVM chains and Aptos, gas on 14 chains, never a guess. Free tier; pay per call in USDC (x402) on 13 networks.
Output
A JSON object with ok:true and the decoded event name, along with the named parameters and their typed values extracted from the raw log topics and data fields.
Example use cases
Decode ERC-20 Transfer event
“I have a raw log from a transaction receipt — the topic is the Transfer(address,address,uint256) keccak hash, the data is a hex value, and I have the ERC-20 ABI. Can you decode it so I can see who sent tokens to whom and how many?”
Parse Uniswap swap event for DeFi analytics
“I'm analyzing a Uniswap V2 swap transaction. Here's the raw log with topics and data from the receipt, and here's the Swap event ABI. Decode it so I can see the amounts in and out.”
Audit NFT mint event on-chain
“I need to verify what happened in this NFT contract log — I have the Mint event ABI as a human-readable signature like 'event Mint(address to, uint256 tokenId)', plus the raw topics and data from the log. Decode it for me.”
Technical details
Endpoint
POSThttps://logicnodes.io/paid/v1/tools/evm_log_decode?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have a raw EVM log (topics + data) from a transaction receipt and need to decode it into human-readable fields without running your own Ethereum node or indexer. Ideal for agents processing on-chain events programmatically, auditing smart contract activity, or building DeFi analytics pipelines. Prefer this over general-purpose RPC nodes that don't offer ABI-based decoding, and over block explorers when you need machine-readable decoded output rather than a web UI.
Side effects
- ABI does not match the log topic selector — returns error indicating no matching event
- Malformed hex in topics or data — returns parsing error
- topics array length mismatch for indexed parameters — decoding fails
- ABI array is empty or missing required event definition — validation error
- Payment not provided or insufficient USDC — 402 response before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| abi | array | JSON ABI objects, or human-readable signatures such as "function transfer(address to, uint256 amount)" |
| data | string | |
| topics | array |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "evm_log_decode"
}
}Tags
x402
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