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Delx EVM Priority Fee Ratio
x402
Delx EVM Priority Fee Ratio is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Computes the ratio of max priority fee per gas to max fee per gas for an EVM transaction, returning the proportion as a decimal and percentage.
Price / call$0.001
Success—
StatusUnknown
How this service works
EVM Priority Fee Ratio: EVM Priority Fee Ratio calculates the priority-fee share of the total fee cap from bounded caller-supplied values without an external provider. Call EVM Priority Fee Ratio before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Priority Fee Ratio as versioned deterministic JSON. Price: $0.001 USDC v…
Output
Returns a JSON object containing the computed ratio (decimal) and percent (integer or float) of the priority fee relative to the max fee per gas, along with a status field ('pass'), the operation name, and an evidence block confirming no data retention and zero external calls.
Example use cases
Pre-submission gas sanity check
“Before I submit this Ethereum transaction, can you check the priority fee ratio? My maxFeePerGas is 50000000000 wei and maxPriorityFeePerGas is 2500000000 wei — I want to confirm the tip is a reasonable proportion.”
DeFi bot fee calibration
“My trading bot just set maxFeePerGas to 100000000000 wei and maxPriorityFeePerGas to 10000000000 wei — what percentage of the max fee is going to the priority tip? I need to tune the ratio to stay competitive without overpaying.”
Gas fee analytics pipeline
“For each transaction in my batch, compute the EVM priority fee ratio: the first one has maxFeePerGas 30000000000 wei and maxPriorityFeePerGas 1500000000 wei — what's the ratio and percent?”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/evm-priority-fee-ratioWhen to prefer
Choose this endpoint when you need a lightweight, in-memory, zero-retention computation of the EVM priority fee ratio before submitting a transaction — especially in agent preflight workflows where you want to validate fee proportionality without any external state side effects. Prefer this over manual calculation when you need a structured, auditable result with an evidence block for compliance or logging.
Side effects
- Invalid or non-numeric wei string values causing computation errors
- maxPriorityFeePerGas exceeding maxFeePerGas producing a ratio greater than 1
- Missing required fields returning a validation error
- Division by zero if maxFeePerGas is zero or empty
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| max_fee_per_gas_wei | string | Max Fee Per Gas Wei supplied to EVM Priority Fee Ratio; used only for this bounded calculation and processed in memory without retention. |
| max_priority_fee_per_gas_wei | string | Max Priority Fee Per Gas Wei supplied to EVM Priority Fee Ratio; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"ratio": 0.05,
"percent": 5
},
"schema": "delx/util-evm-priority-fee-ratio/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "b04dce361f99458031086c658ad3571d192c3729ea28ea2ccad5d3960a15eaf2",
"external_calls": 0
},
"operation": "evm_preflight:evm_priority_fee_ratio"
}
}Tags
x402
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