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Solana Priority Fee Estimator
x402
Solana Priority Fee Estimator is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-15).
Returns recent per-slot priority fee statistics (min, median, p75, p90, max in micro-lamports per CU) and estimated total cost in SOL for a 200k-CU transaction on Solana.
Price / call$0.003
Success—
StatusUnknown
How this service works
558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.
Output
A JSON object containing the network name ('solana'), the number of analyzed slots, the reference accounts used, a breakdown of micro-lamports per compute unit at min/median/p75/p90/max percentiles, and estimated total cost in SOL for a 200k-CU transaction at median/p75/p90 and without any priority fee. Also includes an explanatory note about the methodology.
Example use cases
Optimal fee before DeFi swap
“Before I submit this Jupiter swap, what priority fee should I use? Give me the recent p75 and p90 micro-lamports per CU on Solana so I can set a fee that's likely to land without overpaying.”
Monitoring Solana network congestion
“Check how congested the Solana network is right now by pulling the latest priority fee stats — I want to see the full distribution from min to max, including median and the 90th percentile, and what it would cost in SOL for a 200k CU transaction.”
Custom account fee contention check
“I have a Solana program at address 9xQeWvG816bUx9EPjHmaT23yvVM2ZWbrrpZb9PusVFin — can you estimate the current priority fees needed to land transactions that touch that account, including the p75 and p90 costs in SOL for a 200k compute unit transaction?”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/solana-priority-fees?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need real-time, percentile-based Solana priority fee data derived from recent landed transactions — especially when optimizing fee setting for DeFi transactions on high-contention programs like Jupiter or Raydium. Prefer this over static fee lookups or generic RPC calls when you need SOL cost estimates for a 200k-CU transaction and want to avoid both underpaying (dropped tx) and overpaying.
Side effects
- Invalid or malformed account address in the accounts array returns an error
- Network connectivity issues to Solana RPC may produce stale or unavailable data
- Missing required 'input' body field returns a validation error
- Very low network activity periods may yield mostly-zero fee distributions (legitimate but potentially confusing)
- Payment failure via x402 protocol blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| accounts | array | Optional accounts to measure contention on (default: Jupiter and Raydium) |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Values = minimum priority fee that landed in each of the last slots for those accounts…",
"network": "solana",
"analyzed_slots": 150,
"reference_accounts": [
"JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4"
],
"microlamports_per_unit": {
"max": 19999360,
"min": 0,
"p75": 0,
"p90": 476435,
"median": 0
},
"estimated_cost_sol_200k_units": {
"p75": 0.000005,
"p90": 0.000100287,
"median": 0.000005,
"without_priority": 0.000005
}
}
}Tags
x402
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