imported from the x402 Bazaar, not submitted by the operator · own this service? claim it
Returns current EVM gas fee tiers (slow, standard, fast) as EIP-1559 maxFeePerGas and maxPriorityFeePerGas in wei, plus base fee, head block and block fullness, for 17 EVM chains selected with a chain query parameter.
Pay from $0.001 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
UPTIME 24H 100% │ 7D 100% │ 30D 100%
ASSESSMENT
updated 4h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 299ms
- avg response
- 299ms
- total checks
- 1
compliance A (11/11)
11 of 11 x402 conformance checks pass. Full checklist below.
price $0.001 (p15 in Data)
- price (min)
- $0.001
- category percentile (min)
- p15 in Data
- endpoints / prices
- 1 / 1
- model
- flat
- stability
- 100%
risk clean
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
traction $0 30d · 0 buyers
- volume 30d
- $0
- buyers 30d
- 0
- settlements 30d
- 0
- last settlement
- ---
- top buyer share
- -
- trend 7d vs 30d
- -
- networks
- eip155:8453
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedProvides real-time EVM gas prices across multiple blockchain chains
- category
- gas-prices
- in
- query params
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| GET | /v1/evm/gas | $0.001 | Base | USDC |
1 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /v1/evm/gas returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i 'https://evm-gas.apitoll.cloud/v1/evm/gas'
// 402 response (captured by monitor) · 1 payload · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xcc69d619E6053F88A4845066518f465bD06Fc96c",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://evm-gas.apitoll.cloud/v1/evm/gas",
"tags": [
"evm",
"gas",
"multi-chain",
"gas-oracle",
"ethereum",
"base",
"arbitrum",
"transaction-fees",
"apitoll"
],
"mimeType": "application/json",
"description": "Multi-chain EVM gas price oracle for AI agents — 17 chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB, Avalanche…). One x402 call returns slow/standard/fast EIP-1559 tiers as DROP-IN maxFeePerGas + maxPriorityFeePerGas in wei (plug straight into a viem/ethers tx, no conversion, exact even on sub-gwei L2s), plus base fee, head block, and fullness, from a live eth_feeHistory call. Pass ?chain= to switch chains.",
"serviceName": "ApiToll Multi-Chain EVM Gas"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "ethereum",
"blocks": 20
}
},
"output": {
"type": "json",
"example": {
"caip2": "eip155:1",
"chain": "ethereum",
"stats": {
"ts": "2026-05-28T15:42:30.000Z",
"blocks_sampled": 20,
"median_fullness_pct": 45.5
},
"tiers": {
"fast": {
"maxFeePerGas": "14831000000",
"max_fee_gwei": 14.831,
"max_priority_gwei": 2.2,
"maxPriorityFeePerGas": "2200000000"
},
"slow": {
"maxFeePerGas": "12631000000",
"max_fee_gwei": 12.631,
"max_priority_gwei": 0.001,
"maxPriorityFeePerGas": "1000000"
},
"standard": {
"maxFeePerGas": "13731000000",
"max_fee_gwei": 13.731,
"max_priority_gwei": 1.1,
"maxPriorityFeePerGas": "1100000000"
}
},
"gas_model": "eip1559",
"chain_name": "Ethereum mainnet",
"base_fee_wei": "8421000000",
"block_number": 21403217,
"base_fee_gwei": 8.421
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"chain"
],
"properties": {
"chain": {
"enum": [
"ethereum",
"base",
"optimism",
"arbitrum",
"polygon",
"avalanche",
"gnosis",
"linea",
"scroll",
"blast",
"mode",
"opbnb",
"celo",
"bsc",
"fantom",
"zksync",
"mantle"
],
"type": "string",
"description": "Target EVM chain id. One of: ethereum, base, optimism, arbitrum, polygon, avalanche, gnosis, linea, scroll, blast, mode, opbnb, celo, bsc, fantom, zksync, mantle. Also accepts common aliases (eth, arb, op, matic, avax, bnb). Default: ethereum."
},
"blocks": {
"type": "integer",
"maximum": 50,
"minimum": 1,
"description": "Recent blocks to sample for percentile reward (1..50, clamped)."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"caip2": {
"type": "string"
},
"chain": {
"enum": [
"ethereum",
"base",
"optimism",
"arbitrum",
"polygon",
"avalanche",
"gnosis",
"linea",
"scroll",
"blast",
"mode",
"opbnb",
"celo",
"bsc",
"fantom",
"zksync",
"mantle"
],
"type": "string"
},
"stats": {
"type": "object",
"properties": {
"ts": {
"type": "string",
"format": "date-time"
},
"blocks_sampled": {
"type": "integer"
},
"median_fullness_pct": {
"type": "number"
}
}
},
"tiers": {
"type": "object",
"properties": {
"fast": {
"type": "object",
"properties": {
"maxFeePerGas": {
"type": "string"
},
"max_fee_gwei": {
"type": "number"
},
"max_priority_gwei": {
"type": "number"
},
"maxPriorityFeePerGas": {
"type": "string"
}
}
},
"slow": {
"type": "object",
"properties": {
"maxFeePerGas": {
"type": "string"
},
"max_fee_gwei": {
"type": "number"
},
"max_priority_gwei": {
"type": "number"
},
"maxPriorityFeePerGas": {
"type": "string"
}
}
},
"standard": {
"type": "object",
"properties": {
"maxFeePerGas": {
"type": "string"
},
"max_fee_gwei": {
"type": "number"
},
"max_priority_gwei": {
"type": "number"
},
"maxPriorityFeePerGas": {
"type": "string"
}
}
}
},
"description": "Slow (p10) / standard (p50) / fast (p90) EIP-1559 fee tiers. Each carries human gwei (max_fee_gwei/max_priority_gwei) AND DROP-IN wei (maxFeePerGas/maxPriorityFeePerGas, BigInt-ready) to plug straight into a viem/ethers tx."
},
"gas_note": {
"type": "string"
},
"gas_model": {
"enum": [
"eip1559",
"mostly-legacy",
"non-standard"
],
"type": "string"
},
"chain_name": {
"type": "string"
},
"base_fee_wei": {
"type": "string",
"description": "Base fee in wei (exact, BigInt-ready decimal string)."
},
"block_number": {
"type": "integer"
},
"base_fee_gwei": {
"type": "number",
"description": "Base fee for the next block (gwei, human-readable)."
}
}
}
}
}
}
}
}
},
"x402Version": 2
}
] UPTIME
RESPONSE TIME
30d UPTIME 100%
UPTIME 30D 100%
AVG RESP 353ms
TOTAL CHECKS 17
RECENT CHECKS
TIME STATUS RESP
● OK 140ms
● OK 98ms
● OK 65ms
● SLOW 672ms
● SLOW 565ms
● OK 103ms
● OK 97ms
● OK 146ms
● SLOW 2429ms
● OK 105ms
● OK 144ms
● OK 65ms
● OK 257ms
● OK 141ms
● OK 407ms
● OK 269ms
● OK 299ms
OVER TIME
All charts share the 30d window selected here. Every series is also served as JSON at /api/v1/services/apitoll-multi-chain-evm-gas/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
PRICE (captured 402, USD)
SUB-SCORES (uptime + x402 compliance)
VOLUME (on-chain settlement, USD)
DISTINCT BUYERS
COMPLIANCE
11/11 checks pass · grade A- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
EMBED THIS BADGE
// HTML
<a href="https://x402-list.com/services/apitoll-multi-chain-evm-gas?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/apitoll-multi-chain-evm-gas.svg" alt="ApiToll Multi-Chain EVM Gas listed on x402-list" height="28"> </a>
// Markdown
[](https://x402-list.com/services/apitoll-multi-chain-evm-gas?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/apitoll-multi-chain-evm-gas?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/apitoll-multi-chain-evm-gas.svg?data=uptime" alt="ApiToll Multi-Chain EVM Gas uptime on x402-list" height="28"> </a>