Gas sponsorship for one ERC-4337 user operation on Base (EntryPoint v0.8)
Gas sponsorship for one ERC-4337 user operation on Base (EntryPoint v0.8). Price = max($0.03, 1.3× the op's gas cap); this is the floor — send your user operation to get the exact quote. Bodies this URL accepts: {sender, calls[, redelegate:true]} (plain wallet, EIP-7702) | {userOperation} unsigned (any EntryPoint v0.8 smart account, bring your own operation) | JSON-RPC ERC-7677. Then POST the signed operation back here; we submit it. GET this URL?docs=1 for details. Quote valid 600s.
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
POST https://api.liquidagent.ai/v1/gas
| Category | Market data |
|---|---|
| Provider host | api.liquidagent.ai |
| Networks | eip155:137, 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
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"method": "pm_getPaymasterData",
"params": [
{
"callData": "0x",
"callGasLimit": "0x30d40",
"maxFeePerGas": "0x5f5e100",
"maxPriorityFeePerGas": "0xf4240",
"nonce": "0x0",
"preVerificationGas": "0x13880",
"sender": "0xYourSmartAccount",
"verificationGasLimit": "0x186a0"
},
"0x4337084D9E255Ff0702461CF8895CE9E3b5Ff108",
"0x2105",
{
"x402": "<payment object>"
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"method": {
"const": "pm_getPaymasterData"
},
"params": {
"description": "[userOperation, entryPoint, chainId, context] per ERC-7677; put the x402 payment object in context.x402",
"type": "array"
}
},
"required": [
"method",
"params"
],
"type": "object"
},
"method": {
"const": "POST"
},
"type": {
"const": "http"
}
},
"type": "object"
},
"output": {
"properties": {
"example": {
"paymaster": "0x9676897C3BF08977Cdbe78213F84e72A29b844eC",
"paymasterData": "0x\u2026",
"paymasterPostOpGasLimit": "0x0",
"paymasterVerificationGasLimit": "0xea60",
"validUntil": 1790000000
},
"type": {
"const": "json"
}
},
"type": "object"
}
},
"type": "object"
}