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SYNTHORA Bitcoin Recommended Fee Oracle
x402
SYNTHORA Bitcoin Recommended Fee Oracle is a paid API for AI agents from bitcoin-recommended-fees.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns real-time recommended Bitcoin transaction fee rates (fastest, half-hour, hour, economy, and minimum in sat/vB) sourced from mempool.space
Price / call$0.001
Success—
StatusUnknown
How this service works
Returns real-time recommended Bitcoin transaction fee rates (fastest, half-hour, hour, economy, minimum in sat/vB) from mempool.space. Serves autonomous BTC payment agents and agent-to-agent settlement bots that size fees to hit a target confirmation window without overpaying. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.
Output
A JSON object with ok:true and a result object containing five fee tiers in sat/vB: fastest_fee (next block), half_hour_fee (~3 blocks), hour_fee (~6 blocks), economy_fee (low priority), and minimum_fee (floor accepted by mempool). Provenance metadata is included, citing mempool.space as the source.
Example use cases
Autonomous BTC payment agent fee sizing
“Before you broadcast my Bitcoin payment, check the current recommended fee rates and use the half-hour fee so it confirms quickly but I'm not overpaying on sat/vB.”
Agent-to-agent settlement at minimum cost
“I want to settle a low-priority BTC payment between two bots — grab the current economy and minimum fee rates so we can pick the cheapest option that will still eventually confirm.”
Fee monitoring dashboard update
“Pull the latest Bitcoin mempool fee recommendations — fastest, half-hour, hour, economy, and minimum sat/vB — and refresh our dashboard so traders can see what confirmation window their fee gets them right now.”
Technical details
Endpoint
POSThttps://bitcoin-recommended-fees.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when an autonomous Bitcoin payment agent or settlement bot needs real-time, tiered fee recommendations (not just a single estimate) to hit a specific confirmation window at minimum cost. It is especially suited for agents operating in the x402 micropayment ecosystem and needing structured sat/vB data across five priority tiers sourced from mempool.space, with provenance metadata included.
Side effects
- Upstream mempool.space API unavailability causing stale or missing data
- Network timeout resulting in no response
- Invalid or malformed request payload returning an error
- Rate limiting or payment failure (x402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keys | string | keys |
| caller | string | caller |
| payload | string | payload |
| provides | string | provides |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "bitcoin-recommended-fees",
"result": {
"hour_fee": 1,
"economy_fee": 1,
"fastest_fee": 1,
"minimum_fee": 1,
"half_hour_fee": 1
},
"provenance": {
"url": "https://mempool.space/api/v1/fees/recommended",
"source": "Bitcoin Recommended Fee Oracle"
}
}
}Tags
x402
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