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Seneschal Monero Fee Estimate
x402
Seneschal Monero Fee Estimate is a paid API for AI agents from api.seneschal.space, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Returns the current recommended transaction fee for the Monero network, including fee-per-byte and estimated total fee at various priority levels.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call services for the agent economy: a webhook the moment a Monero or Zcash payment lands at your address (view-key only), single-fact x402 data APIs, a paid public notice board, a stablecoin gas paymaster and a permissionless Ethereum block builder. No account, no API key — pay in USDC on Base or in XMR/ZEC.
Output
A JSON object containing the chain name ('monero'), a millisecond timestamp of when the fee was measured, an array of priority levels (e.g. 'normal') each with an estimated fee in XMR and piconero, the fee per byte in piconero, and the typical transaction size in bytes.
Example use cases
Pre-send Monero fee check
“Before I send 0.5 XMR to this address, what's the current normal priority transaction fee on Monero so I know what to budget?”
Wallet fee auto-estimation
“I'm building a Monero wallet and need to show users the estimated network fee before they confirm — can you fetch the latest recommended XMR fee and fee-per-byte right now?”
Crypto arbitrage cost calculation
“I want to factor in Monero transaction costs for my arbitrage bot — what's the current fee estimate in piconero and what's the typical transaction size in bytes?”
Technical details
Endpoint
GEThttps://api.seneschal.space/v1/q/xmr/fee-estimateWhen to prefer
Use this endpoint when you need a real-time, pay-per-call Monero fee estimate without requiring an account or API key. It is especially suited for agents that handle Monero payments and need to programmatically determine the correct fee before constructing or broadcasting a transaction. Prefer this over self-hosted node queries when you lack direct Monero node access.
Side effects
- Payment not received or insufficient USDC payment via x402 — returns 402 Payment Required
- Monero node temporarily unavailable — may return a 503 or stale data
- Malformed request — returns 400 Bad Request
- Network congestion or upstream node issues may cause delayed or inaccurate fee estimates
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "monero",
"as_of_ms": 1765532000000,
"priorities": [
{
"level": "normal",
"est_fee_xmr": 0.00003,
"est_fee_piconero": 30000000,
"fee_per_byte_piconero": 20000
}
],
"fee_per_byte_piconero": 20000,
"typical_tx_size_bytes": 1500
}
}Tags
x402
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