Current gas price and EIP-1559 fee estimate for a chain (base, ethereum, polygon, arbitrum
Current gas price and EIP-1559 fee estimate for a chain (base, ethereum, polygon, arbitrum, optimism)
1000 (raw units)
price
2
calls / 30d
2
unique payers
2026-09-08
updated
Provider
x402tap.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "1000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:137",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"amount": "1000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:42161",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"amount": "1000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "9fqXniDAn8hNMYC5C9waGv5u126bkwjU6qGgAoQeoWyo",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "1000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"chain": "base"
},
"type": "http"
},
"output": {
"example": {
"chain": "Base",
"gasPriceGwei": 0.012,
"maxFeePerGasGwei": 0.015,
"maxPriorityFeePerGasGwei": 0.001,
"nativeSymbol": "ETH"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "Chain to query: base, ethereum, polygon, arbitrum, optimism (default base)",
"type": "string"
}
},
"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"
}
},
"offer-receipt": {
"info": {
"offers": [
{
"acceptIndex": 0,
"format": "eip712",
"payload": {
"amount": "1000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"network": "eip155:8453",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"resourceUrl": "https://x402tap.com/api/gas-price",
"scheme": "exact",
"validUntil": 1788855156,
"version": 1
},
"signature": "0x02fe089021ddb1b24a82aab6ebff06406fe06add43fede5a9e1667cfcb6859e339379df276c440a1a7d4cd5640cc05b073102e38cf5306051576cf1c00e1ef6d1c"
},
{
"acceptIndex": 1,
"format": "eip712",
"payload": {
"amount": "1000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"network": "eip155:137",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"resourceUrl": "https://x402tap.com/api/gas-price",
"scheme": "exact",
"validUntil": 1788855156,
"version": 1
},
"signature": "0x0cae7e313638ea6045e69694fc2cd47cf4f11b503a9a73ce18ea719c351b5994176a62f2296c8afd5eeb6a8c3f156c931d479e75eb86fa61137ea35e8c04ffb01b"
},
{
"acceptIndex": 2,
"format": "eip712",
"payload": {
"amount": "1000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"network": "eip155:42161",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"resourceUrl": "https://x402tap.com/api/gas-price",
"scheme": "exact",
"validUntil": 1788855156,
"version": 1
},
"signature": "0x87a8def714d2b16bb6d338d6c732573d5681f842fb487d0b2e054197e496ebff533c58f00ede63991450e9a3ac9812b3f9fc402162b85bc75a7d48daffe7f9a61c"
},
{
"acceptIndex": 3,
"format": "eip712",
"payload": {
"amount": "1000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "9fqXniDAn8hNMYC5C9waGv5u126bkwjU6qGgAoQeoWyo",
"resourceUrl": "https://x402tap.com/api/gas-price",
"scheme": "exact",
"validUntil": 1788855156,
"version": 1
},
"signature": "0x2f64ecc7185ebbad8221b372116a7fc8bcdee3392246112c7f582c923ca3068d2118df99931ec0a36ae6d693c16887466d132631ed4fcba27830eaa62d2b22051c"
}
]
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"offers": {
"items": {
"properties": {
"acceptIndex": {
"type": "integer"
},
"format": {
"type": "string"
},
"payload": {
"properties": {
"amount": {
"type": "string"
},
"asset": {
"type": "string"
},
"network": {
"type": "string"
},
"payTo": {
"type": "string"
},
"resourceUrl": {
"type": "string"
},
"scheme": {
"type": "string"
},
"validUntil": {
"type": "integer"
},
"version": {
"type": "integer"
}
},
"required": [
"version",
"resourceUrl",
"scheme",
"network",
"asset",
"payTo",
"amount"
],
"type": "object"
},
"signature": {
"type": "string"
}
},
"required": [
"format",
"signature"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"offers"
],
"type": "object"
}
}
}Use it
curl
curl "https://x402tap.com/api/gas-price" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://x402tap.com/api/gas-price");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://x402tap.com/api/gas-price")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/1133.json, and this resource appears in /discovery/resources and /discovery/search.