TraceFast live Ethereum data
TraceFast live Ethereum data: every contract storage slot a transaction wrote, in execution order — which contract's storage, which frame wrote it (with the address whose code ran, which on a `delegatecall` is not the storage owner), the slot, the value written, and the value the slot held before where that can be established. Path: hash. Query: limit, cursor (see docs). Docs: https://docs.tracefast.xyz/api/transaction-storage-writes.md
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/storage-writes
| Category | Code and developer |
|---|---|
| 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 | $0.2 | 20 ms |
Example input (from the provider)
{
"method": "GET",
"pathParams": {
"hash": "0x0e646d1b52758cafe4eca236972927be572053491217fa08751d3958a1e30f0a"
},
"queryParams": {
"limit": "10"
},
"type": "http"
}
Promised output schema (from the provider)
{
"properties": {
"input": {
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object"
}
},
"required": [
"method"
]
}
}
}