ApiToll Multi-Chain EVM Gas
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.
Offering
- Provider
- evm-gas.apitoll.cloud
- Method
- GET
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Blockchain And Crypto
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://evm-gas.apitoll.cloud/v1/evm/gas- MIME type
- application/json
- First seen
- 2026-10-16T01:50:06.715Z
- Last seen
- Tags
- EVM, Gas, multi-chain, gas-oracle, Ethereum, Base, Arbitrum, transaction-fees, apitoll
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "1000",
"payTo": "0xcc69d619E6053F88A4845066518f465bD06Fc96c"
}
]Observed health
- Status
- Healthy
- Latest latency
- 293 ms
- Average latency
- 833 ms
- HTTP status
- 402
- Last checked
- Reachability
- 100% over 14 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"GET"
]
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"type": "string",
"enum": [
"ethereum",
"base",
"optimism",
"arbitrum",
"polygon",
"avalanche",
"gnosis",
"linea",
"scroll",
"blast",
"mode",
"opbnb",
"celo",
"bsc",
"fantom",
"zksync",
"mantle"
],
"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",
"minimum": 1,
"maximum": 50,
"description": "Recent blocks to sample for percentile reward (1..50, clamped)."
}
},
"required": [
"chain"
]
}
},
"required": [
"type",
"method"
],
"additionalProperties": false
}Output schema
{
"type": "object",
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"chain": {
"type": "string",
"enum": [
"ethereum",
"base",
"optimism",
"arbitrum",
"polygon",
"avalanche",
"gnosis",
"linea",
"scroll",
"blast",
"mode",
"opbnb",
"celo",
"bsc",
"fantom",
"zksync",
"mantle"
]
},
"chain_name": {
"type": "string"
},
"caip2": {
"type": "string"
},
"gas_model": {
"type": "string",
"enum": [
"eip1559",
"mostly-legacy",
"non-standard"
]
},
"gas_note": {
"type": "string"
},
"block_number": {
"type": "integer"
},
"base_fee_gwei": {
"type": "number",
"description": "Base fee for the next block (gwei, human-readable)."
},
"base_fee_wei": {
"type": "string",
"description": "Base fee in wei (exact, BigInt-ready decimal string)."
},
"tiers": {
"type": "object",
"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.",
"properties": {
"slow": {
"type": "object",
"properties": {
"maxFeePerGas": {
"type": "string"
},
"maxPriorityFeePerGas": {
"type": "string"
},
"max_fee_gwei": {
"type": "number"
},
"max_priority_gwei": {
"type": "number"
}
}
},
"standard": {
"type": "object",
"properties": {
"maxFeePerGas": {
"type": "string"
},
"maxPriorityFeePerGas": {
"type": "string"
},
"max_fee_gwei": {
"type": "number"
},
"max_priority_gwei": {
"type": "number"
}
}
},
"fast": {
"type": "object",
"properties": {
"maxFeePerGas": {
"type": "string"
},
"maxPriorityFeePerGas": {
"type": "string"
},
"max_fee_gwei": {
"type": "number"
},
"max_priority_gwei": {
"type": "number"
}
}
}
}
},
"stats": {
"type": "object",
"properties": {
"blocks_sampled": {
"type": "integer"
},
"median_fullness_pct": {
"type": "number"
},
"ts": {
"type": "string",
"format": "date-time"
}
}
}
}
}
},
"required": [
"type"
]
}