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Satoshi API AI Fee Advice
x402
Satoshi API AI Fee Advice is a paid API for AI agents from cdp.bitcoinsapi.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).
Returns plain-language AI-generated Bitcoin fee recommendations with structured guidance on whether to send now or wait, target fee rate, and estimated savings.
Price / call$0.01
Success—
StatusDown
How this service works
Satoshi API AI fee advice: plain-language Bitcoin fee recommendations for agents, wallets, and bots.
Output
A JSON object containing a human-readable advice string explaining whether to send or wait, the recommended fee in sat/vB, the current fee environment label (e.g. 'rock-bottom'), confidence level, estimated savings percentage versus sending immediately, and the urgency echo. Also includes structured fields: wait (bool), action, confidence, fee_environment, recommended_fee_sat_vb, and raw fee data for next-block/6-block/1-day windows.
Example use cases
Example prompt
“Should I send my 0.5 BTC payment right now or wait for lower fees — it's medium urgency, not something that needs to confirm in the next block?”
Technical details
Endpoint
GEThttps://cdp.bitcoinsapi.com/api/v1/ai/fees/adviceWhen to prefer
Use this endpoint when you need a human-readable, AI-synthesized recommendation — not just raw fee numbers — especially for wallets, bots, or agents that need to communicate fee strategy in natural language to end users. Prefer this over raw fee estimator endpoints when you want a 'send vs wait' decision with confidence and savings context already computed. Ideal for DCA bots, payment processors, or wallet UIs that want opinionated guidance rather than raw sat/vB data.
Side effects
- Upstream mempool or fee data unavailable — may return stale cached response or error
- Invalid urgency enum value returns 422 validation error
- Bitcoin node out of sync — meta.syncing flag set to true, advice may be unreliable
- Network timeout if Azure OpenAI backend is slow or unavailable
- x402 payment required if USDC payment header is missing or invalid
Input
{
"input": {
"queryParams": {
"context": "payment",
"urgency": "medium",
"amount_btc": "0.5"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
{
"data": {
"advice": "For a medium-urgency payment of 0.5 BTC, I recommend setting a fee around 2.1 sat/vB to confirm within about 6 blocks (roughly an hour). Fees are currently low but rising, so acting soon at this rate balances cost and speed well. Avoid the lowest 1 sat/vB fee since mempool congestion is increasing and could delay your transaction beyond your desired timeframe.",
"context": "payment",
"urgency": "medium",
"fee_data": {
"1_day_sat_vb": 1,
"6_blocks_sat_vb": 2.124,
"next_block_sat_vb": 4.614999999999999
},
"provider": "azure_openai",
"structured": {
"wait": false,
"action": "send",
"confidence": "high",
"fee_environment": "low",
"estimated_savings_pct": 78.3,
"recommended_fee_sat_vb": 4.614999999999999
}
},
"meta": {
"chain": "main",
"cached": true,
"syncing": false,
"timestamp": "2026-05-29T20:21:18.204228+00:00",
"max_blocks": null,
"request_id": null,
"node_height": 951608,
"cache_age_seconds": 0
}
}Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | object | |
| metarequired | object |
Tags
x402
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