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ABI-Decode Return Data Against Declared Types
x402
ABI-Decode Return Data Against Declared Types is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).
Decodes raw ABI-encoded hex data into human-readable values given a list of Solidity types
Price / call$0.002
Success—
StatusUnknown
How this service works
ABI-decode return data against declared types — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok: true, the decoded values corresponding to the provided types, a receipt containing a transaction hash, USD amount paid, and a unique receipt ID, plus a generated_at ISO8601 timestamp.
Example use cases
Parse contract call return value
“I just called a smart contract and got back this raw hex: 0x0000000000000000000000000000000000000000000000000de0b6b3a7640000 — can you decode it as a uint256 so I can see the actual number?”
Decode multi-value tuple response
“My contract returned this ABI-encoded blob: 0x00000000000000000000000000000000000000000000000000000000000001f4000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045 — decode it as (uint256, address) please.”
Interpret encoded event log data
“I have raw event log data from an ERC20 Transfer event: 0x0000000000000000000000000000000000000000000000056bc75e2d63100000 — decode it as uint256 to get the token amount transferred.”
Technical details
Endpoint
POSThttps://twin.unykorn.org/abi-decode?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you have raw ABI-encoded hex data returned from an EVM smart contract call, transaction, or event log and need to convert it into typed, human-readable values without setting up a local Web3 library. Ideal for agents operating in environments where ethers.js or web3.py is unavailable, or when you need a lightweight, pay-per-call decoding step in a larger blockchain automation workflow.
Side effects
- Invalid or malformed 0x hex data returns an error response
- Mismatch between data length and declared types causes decode failure
- Unsupported or unrecognized Solidity types may result in errors
- Empty or missing data field returns a validation error
- Hex string not padded to 32-byte word boundaries may fail to decode
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "abi-decode",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.002,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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