TraceFast live Ethereum data
TraceFast live Ethereum data: the failed call frames of a reverted transaction — for each, its position in the call tree, caller and target, the kind of failure (revert, panic, custom error, out of gas, …), the revert payload with its selector, and the error name when the selector is known. Path hash: Transaction hash, `0x`-prefixed, 64 hex characters, any case. Docs: https://docs.tracefast.xyz/api/transaction-failures.md
Answeringour last check, 2026-10-01
1 of 1checks answered this week
20 msmedian answer time
$0.02listed price per call
$0.02price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://mpp.tracefast.xyz/api/v1/chains/1/transactions/:hash/failures
| Category | Market data |
|---|---|
| Provider host | mpp.tracefast.xyz |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-01 | valid payment request | 402 | $0.02 | 20 ms |
Example input (from the provider)
{
"method": "GET",
"pathParams": {
"hash": "0x3602a64b41d7f65b2bf2a6d1da75c0fb817bbe17874c4e884b7e2d26cb80253a"
},
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"properties": {
"input": {
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object"
}
},
"required": [
"method"
]
}
}
}