Did my Base transaction work and what did it cost?
Did my Base transaction work and what did it cost? One call returns success or reverted, gas used, effective gas price, the fee in wei and in exact decimal ETH, confirmations behind the head, sender, recipient, value and log count. Pending and unknown hashes get a definite answer rather than an error.
Answeringour last check, 2026-10-02
1 of 1checks answered this week
2264 msmedian answer time
$0.006listed price per call
$0.006price 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
POST https://api.zfinia.com/x402/v1/base-transaction-outcome
| Category | Market data |
|---|---|
| Provider host | api.zfinia.com |
| 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 |
|---|---|---|---|---|
| 2026-10-02 | valid payment request | 402 | $0.006 | 2264 ms |
Example input (from the provider)
{
"body": {
"hash": "0xcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"hash": {
"description": "Transaction hash.",
"pattern": "^0x[0-9a-fA-F]{64}$",
"type": "string"
}
},
"required": [
"hash"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"block_hash": {
"description": "Hash of that block.",
"type": "string"
},
"block_number": {
"description": "Decimal block height every value in this response was read at.",
"type": "string"
},
"chain": {
"const": "base"
},
"chain_id": {
"const": 8453
},
"confirmations": {
"type": [
"string",
"null"
]
},
"effective_gas_price_wei": {
"type": [
"string",
"null"
]
},
"fee_eth": {
"description": "Exact decimal ETH, computed without floating point.",
"type": [
"string",
"null"
]
},
"fee_wei": {
"type": [
"string",
"null"
]
},
"found": {
"type": "boolean"
},
"from": {
"type": [
"string",
"null"
]
},
"gas_used": {
"type": [
"string",
"null"
]
},
"hash": {
"type": "string"
},
"log_count": {
"type": [
"integer",
"null"
]
},
"mined": {
"type": "boolean"
},
"request_id": {
"description": "Delivery request identifier; also returned in x-foundry-request-id.",
"type": "string"
},
"rpc_calls": {
"description": "Upstream RPC calls this response cost.",
"type": "integer"
},
"service_id": {
"description": "Canonical service identifier.",
"type": "string"
},
"service_version": {
"description": "Version of the invoked service.",
"type": "string"
},
"status": {
"description": "success, reverted, pending, or null when the hash is unknown.",
"type": [
"string",
"null"
]
},
"to": {
"type": [
"string",
"null"
]
},
"value_wei": {
"type": [
"string",
"null"
]
}
},
"required": [
"request_id",
"service_id",
"service_version",
"chain",
"chain_id",
"block_number",
"block_hash",
"rpc_calls",
"hash",
"found",
"mined",
"status",
"confirmations",
"gas_used",
"effective_gas_price_wei",
"fee_wei",
"fee_eth",
"from",
"to",
"value_wei",
"log_count"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}