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BTC Network Fees API (x402 Pay-Per-Call)
x402
BTC Network Fees API (x402 Pay-Per-Call) is a paid API for AI agents from workspace-x402-paywall.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).
Returns current Bitcoin network fee estimates via a pay-per-call endpoint requiring $0.005 USDC payment via x402 on Base or Solana mainnet.
Price / call$0.005
Success—
StatusUnknown
How this service works
66 pay-per-call APIs: AI text/image generation ($0.01), Polymarket odds, crypto prices, DeFi yields, FX rates, weather, IP/geo, FBI wanted, SEC tickers, clinical trials, 250M academic papers, Stack Overflow, meme-coin launchpads (pump.fun, Clanker, Four.meme, SunPump), tokenized stocks, Solana top 100, and 40+ more. $0.005/call standard. USDC on Base and Solana via x402.
Output
Returns a JSON object containing current Bitcoin network fee estimates, likely including fee rates in sat/vbyte for different confirmation speed tiers (e.g. slow, average, fast/high priority). Specific fields can be filtered using the optional comma-separated 'fields' query parameter.
Example use cases
Transaction fee optimizer for wallet app
“Check the current BTC network fees so I can decide whether to send this Bitcoin now or wait for congestion to drop — I need the low, medium, and high priority rates.”
DeFi bot pre-flight fee check
“Before my Bitcoin transaction goes out, grab the latest network fee estimates so the bot can pick the right sat/vbyte rate to confirm within the next block.”
Crypto portfolio dashboard fee widget
“Pull the current Bitcoin transaction fees for my dashboard — I want to show users real-time low, medium, and high priority fee rates right now.”
Technical details
Endpoint
GEThttps://workspace-x402-paywall.onrender.com/btc/fees?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, cheap ($0.005 USDC) pay-per-call Bitcoin fee lookup without committing to a subscription-based API. Ideal for AI agents operating in x402-enabled payment flows on Base or Solana mainnet that need on-demand BTC fee data without managing API keys.
Side effects
- Payment not received or malformed x402 payment header returns 402 Payment Required
- Invalid 'fields' parameter value may return an error or be ignored
- Service may be unavailable on the Render free tier (cold start delays or downtime)
- Stale fee data if the underlying BTC mempool data source is lagging
- No response schema guaranteed — output structure may change without notice
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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