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SYNTHORA BTC Fee Tiers & Mempool Congestion
x402
SYNTHORA BTC Fee Tiers & Mempool Congestion is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Returns Bitcoin fee tiers and mempool congestion data cross-reported from two independent node sources (mempool.space and blockstream.info) with methodology divergence declared, for optimal BTC transaction timing.
Price / call$0.005
Success—
StatusUnknown
How this service works
SYNTHORA btc-fees: Bitcoin fee tiers + mempool congestion, cross-reported from two independent node sources (mempool.space + blockstream.info) with methodology divergence declared. For agents timing BTC transactions. Free sources, no key. $0.005 USDC x402 Base.
Output
Returns Bitcoin fee tiers (e.g. fast/medium/slow in sat/vbyte), current mempool congestion status, and a cross-comparison between mempool.space and blockstream.info fee estimates, including any declared divergence in methodology between the two data sources.
Example use cases
Timing a large BTC transfer
“I need to send a large Bitcoin payment — can you check the current mempool congestion and fee tiers from multiple sources so I know whether to send now or wait for fees to drop?”
Automated BTC payout fee selection
“Before triggering our automated BTC payout batch, pull the current fee tiers and tell me what sat/vbyte rate to use for next-block confirmation vs. a 30-minute window.”
Divergence alert between fee oracles
“Check the current Bitcoin fee estimates from both mempool.space and blockstream.info and flag if they're significantly disagreeing — I want to know if there's methodology divergence before I set my wallet fee.”
Technical details
Endpoint
POSThttps://api.hergertsynthora.com/v1/btc-feesWhen to prefer
Choose this endpoint when you need dual-source Bitcoin fee verification with explicit methodology divergence disclosure, rather than a single-oracle fee API. Ideal for agents that must justify fee decisions with cross-validated data, detect fee oracle disagreements, or time BTC transactions based on mempool congestion. Not suitable for Ethereum/EVM chain gas — use SYNTHORA gas-oracle-multi for that.
Side effects
- Upstream source unavailability: if mempool.space or blockstream.info is down, partial or degraded data returned
- Stale data: mempool conditions change rapidly; response may lag by seconds to minutes
- No methodology consensus: divergence between sources may be large during high-volatility fee periods
- Invalid input: malformed request body returns error
- Payment failure: x402 micropayment not completed results in 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | SYNTHORA btc-fees: Bitcoin fee tiers + mempool congestion, cross-reported from two independent node sources (mempool.space + blockstream.info) with methodology divergence declared. For agents timing BTC transactions. Free sources, no key. $0.005 USDC x402 Base. |
Tags
x402
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