Calculate a transaction's gas fee
Calculate a transaction's gas fee: gas units × gas price (gwei) gives the ETH cost, multiplied by the ETH price for USD. Exact BigInt math for the wei amounts. Use this when an agent needs to transaction cost in ETH and USD from gas × gwei.
Answeringour last check, 2026-10-02
1 of 1checks answered this week
239 msmedian answer time
$0.001listed price per call
$0.001price 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://agenttools-hub.vercel.app/api/v1/crypto/gas-fee-calculator
| Category | Market data |
|---|---|
| Provider host | agenttools-hub.vercel.app |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 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 | $0.001 | 239 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"ethPriceUsd": 3000,
"gasUnits": 21000,
"gweiPrice": 10
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"ethPriceUsd": {
"description": "ETH price (USD)",
"type": "number"
},
"gasUnits": {
"description": "Gas units",
"type": "number"
},
"gweiPrice": {
"description": "Gas price (gwei)",
"type": "number"
}
},
"required": [
"gasUnits",
"gweiPrice",
"ethPriceUsd"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}