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revert.wtf ABI-Aware EVM Revert Data Decoder
x402
revert.wtf ABI-Aware EVM Revert Data Decoder is a paid API for AI agents from revert.wtf, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Decodes raw EVM revert bytes into human-readable error messages using an optional ABI JSON for custom error types.
Price / call$0.001
Success—
StatusUnknown
How this service works
Paid hosted ABI-aware EVM revert data decoder. Send revert bytes and optionally an ABI JSON string.
Output
Returns the decoded revert reason as a human-readable string, including the error name, decoded parameters, and their values when an ABI is provided. For standard errors (e.g. Error(string) or Panic(uint256)) decoding works without an ABI; for custom errors the ABI JSON enables full parameter decoding.
Example use cases
Debug failed DeFi transaction
“My swap transaction just failed on-chain. The raw revert data is 0x08c379a000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000010536c69707061676520746f6f206c6f770000000000000000000000000000000000 — can you decode that and tell me what the revert reason actually says?”
Decode custom Solidity error with ABI
“I have a custom error revert from my smart contract. The hex revert data is 0x4e487b710000000000000000000000000000000000000000000000000000000000000032 and here's the ABI: [{"type":"error","name":"Panic","inputs":[{"name":"code","type":"uint256"}]}]. What error is this and what do the decoded parameters mean?”
Automated revert decoding in CI pipeline
“As part of our test suite, when a transaction reverts, decode the raw revert bytes automatically using the contract's ABI so we get a human-readable error instead of raw hex in the test output. Here's the latest failure data: 0xe450d38c and the ABI for that contract.”
Technical details
Endpoint
POSThttps://revert.wtf/api/x402/revert-decode?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have raw EVM revert bytes from a failed transaction and need to understand the human-readable error. It is the right choice when dealing with custom Solidity errors that require ABI context to decode fully, or when you need a fast, deterministic programmatic decode rather than a natural-language explanation. Prefer this over the revert.wtf error explanation endpoint when you specifically have raw hex bytes and want structured decoded output rather than a prose explanation.
Side effects
- Invalid or malformed hex data returns a decode error
- ABI JSON parse failure if abiText is malformed JSON
- Unknown 4-byte selector with no ABI provided results in partial decode (selector only)
- Empty data field returns an error indicating no revert data to decode
- Payment failure (x402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | string | |
| abiText | string |
Tags
x402
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