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Base Network Priority Fee Analyzer
x402
Base Network Priority Fee Analyzer is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Analyzes EVM gas fee parameters for Base network transactions, decomposing base fee, priority fee, and effective gas price from caller-supplied transaction data.
Price / call$0.01
Success—
StatusUnknown
How this service works
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Output
Returns a structured JSON analysis including: base_fee_per_gas, max_fee_per_gas, max_priority_fee_per_gas, realized_priority_fee_per_gas, effective_gas_price, execution_fee (in gwei units), cap_headroom (headroom between max fee and base fee), gas limit, operating mode (evm_fee), and network_context describing the OP Stack chain's accepted chain IDs, deposit transaction type, and fee model. May include warnings if the priority fee tip is not recommended or viable at current conditions.
Example use cases
Validate gas settings before submission
“Before I submit this transaction on Base mainnet, can you check if my gas settings make sense? The base fee is 100, I've set max fee per gas to 105, and max priority fee to 5 with 21000 gas — will the tip be accepted and what's the actual execution cost?”
Debug why transaction is stuck
“My Base network transaction seems stuck — the base fee was around 100 gwei when I submitted and I set a max priority fee of 2. Can you analyze these fee parameters and tell me if my cap headroom is too tight and why the tip might not be getting picked up?”
Compute total execution fee for cost estimate
“I need to estimate the total execution fee for a standard ETH transfer on Base — assume base fee of 100, max fee of 105, priority fee of 5, and gas limit of 21000. What will the realized execution cost be in gwei?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/base_priority_fee_analyze/invokeWhen to prefer
Use this endpoint when you need to programmatically validate or decompose EVM gas fee parameters specifically for the Base network (OP Stack L2). It is ideal for agents building or verifying transactions before submission, cost-estimation pipelines, or fee debugging workflows. Prefer this over generic gas estimators when you already have transaction parameters and need structured analysis of cap headroom, priority fee viability, and effective gas price on Base specifically.
Side effects
- Malformed or missing request_json causes validation error
- Invalid JSON structure in the transaction data returns parsing error
- Gas parameters that are inconsistent (e.g. max_fee < base_fee) may trigger warnings or errors
- Network not recognized as Base (chain IDs 8453 or 84532) may return an error or unexpected results
- Payment failure via x402 prevents execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Does not recommend a live tip."
],
"service_id": "base_priority_fee_analyze",
"analysis_json": "{\"base_fee_per_gas\":\"100\",\"cap_headroom\":\"5\",\"effective_gas_price\":\"105\",\"execution_fee\":\"2205000\",\"gas\":\"21000\",\"max_fee_per_gas\":\"105\",\"max_priority_fee_per_gas\":\"5\",\"mode\":\"evm_fee\",\"network_context\":{\"accepted_chain_ids\":[\"8453\",\"84532\"],\"deposit_transaction_type\":\"0x7e\",\"fee_model\":\"L2 execution plus caller-supplied L1 data/operator components\",\"protocol_family\":\"OP Stack\"},\"realized_priority_fee_per_gas\":\"5\"}",
"evidence_scope": "caller_supplied_data",
"analyzed_network": "base"
},
"status": "succeeded",
"receipt": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"usage": [],
"status": "succeeded",
"network": "eip155:8453",
"artifacts": [],
"endedAtMs": 0,
"latencyMs": 0,
"paymentId": "example-payment",
"receiptId": "example-receipt",
"requestId": "example-request",
"serviceId": "base_priority_fee_analyze",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "10000",
"resultSha256": "7275526274d1c0ddab291ff00c3419779369469f6091ea8d2a98393f2afc5904",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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