Run a read-only transaction simulation with eth_call and eth_estimateGas against
Run a read-only transaction simulation with eth_call and eth_estimateGas against a supported public EVM RPC without signing or broadcasting.
Answeringour last check, 2026-10-03
1 of 1checks answered this week
298 msmedian answer time
$0.005listed price per call
$0.005price 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://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/tx_simulator
| Category | Everything else |
|---|---|
| Provider host | ai-data-marketplace-1042299154756.us-central1.run.app |
| 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 |
|---|---|---|---|---|
| 2026-10-03 | valid payment request | 402 | $0.005 | 298 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"data": "0x313ce567",
"from": "0x8647F7D7a1368a467Ad1FF757fBc2e7167973558",
"network": "base",
"to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"value": "0"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": true,
"properties": {
"data": {
"description": "Hex-encoded transaction calldata.",
"type": "string"
},
"from": {
"description": "Sender address.",
"type": "string"
},
"network": {
"description": "Blockchain network identifier.",
"type": "string"
},
"to": {
"description": "Destination contract address.",
"type": "string"
},
"value": {
"description": "Amount of native token sent in wei.",
"type": "string"
}
},
"required": [
"network",
"from",
"to",
"data"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": true,
"properties": {
"broadcast": {
"type": "boolean"
},
"estimated_gas": {
"type": "string"
},
"marketplace_metadata": {
"additionalProperties": true,
"properties": {
"availability": {
"type": "string"
},
"billable": {
"type": "boolean"
},
"data_mode": {
"type": "string"
},
"source": {
"type": "string"
}
},
"required": [
"data_mode",
"billable",
"availability",
"source"
],
"type": "object"
},
"network": {
"type": "string"
},
"return_data": {
"type": "string"
},
"simulation_status": {
"type": "string"
},
"source": {
"type": "string"
},
"success": {
"type": "boolean"
}
},
"required": [
"success",
"source",
"network",
"broadcast",
"simulation_status",
"estimated_gas",
"return_data",
"marketplace_metadata"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}