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Solana Priority Fee Calculator
x402
Solana Priority Fee Calculator is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Calculates the priority fee in lamports for a Solana transaction given compute unit limit and price inputs, without making live network calls.
Price / call$0.005
Success—
StatusUnknown
How this service works
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Output
Returns a JSON analysis containing the compute unit limit, compute unit price in micro-lamports, the calculated priority fee in lamports (rounded up to ceiling), the rounding method used, the analyzed network (solana), and any warnings such as the fact that this is a deterministic calculation and does not reflect live competitive CU pricing.
Example use cases
Pre-submission fee budget check
“Before I send this Solana swap transaction, calculate the priority fee for 150,000 compute units at 5,000 micro-lamports per CU so I know exactly how many lamports to budget.”
Comparing fee tiers for NFT mint
“I'm minting an NFT and want to compare costs — what's the total priority fee in lamports if I set 200,000 compute units at 2,500 micro-lamports versus 500 micro-lamports?”
Validating fee parameters in a bot
“My trading bot is about to submit a Solana transaction with 300,000 compute units and 1,200 micro-lamports per CU — can you verify the total priority fee in lamports that will be charged?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/solana_priority_fee_calculate/invokeWhen to prefer
Use this endpoint when you need a fast, deterministic, offline calculation of a Solana priority fee from known compute unit parameters — ideal for pre-flight fee budgeting, transaction cost validation, or bot pipelines where you supply the CU limit and price yourself. Prefer it over live fee estimation APIs when you already know your CU parameters and want a reliable ceiling-rounded lamport value without network latency.
Side effects
- Malformed or invalid request_json input returns an error
- Missing required compute unit fields causes calculation failure
- Values outside acceptable numeric ranges may produce warnings or errors
- Service does not fetch live network data so results may not reflect current competitive fee conditions
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Does not estimate a live competitive CU price."
],
"service_id": "solana_priority_fee_calculate",
"analysis_json": "{\"compute_unit_limit\":\"200000\",\"compute_unit_price_micro_lamports\":\"1000\",\"priority_fee_lamports\":\"200\",\"rounding\":\"ceiling\"}",
"evidence_scope": "caller_supplied_data",
"analyzed_network": "solana"
},
"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": "solana_priority_fee_calculate",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "5000",
"resultSha256": "3b3dc94ff3dc0f0026934cb71c3285a2626aa3aa865c6e7aba495ba8efacf98a",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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