# btcnode.uk Bitcoin Fee Forecast

> btcnode.uk Bitcoin Fee Forecast is a paid API for AI agents from btcnode.uk, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns current Bitcoin network fees plus predictions for the next 3 blocks and a trend analysis

## Facts

- Endpoint: GET https://btcnode.uk/api/fees/predict
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/btcnode-uk-99f7ac13
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_42ZlFjXg10az7pk5QgLvL

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability btcnode-uk-99f7ac13
```

Example prompt: What are the current Bitcoin transaction fees and what do you predict fees will look like over the next 3 blocks — is the trend going up or down right now?

## When to prefer this

Choose this endpoint when you need not just current fee estimates but also forward-looking block-level predictions and trend direction — ideal for timing Bitcoin transactions optimally. Prefer over basic fee estimators when the agent needs to decide whether to send now or wait.

## Known failure modes

- Node unavailable: Bitcoin Core node may be temporarily unreachable, returning a 5xx error
- Stale data: if node is syncing, fee data may be slightly outdated
- No mempool activity: very low congestion periods may yield minimal forecast variance
- Payment failure: x402 micropayment of $0.001 USDC not processed correctly

## How this service works

Bitcoin blockchain data, address portfolio, transaction tracing, fee forecasting, whale monitoring, SEC EDGAR filings, URL scraping, AI summarization, and Reddit API via x402 micropayments on Base.

## Output

Returns current Bitcoin fee rates in sat/vB, predictions for the next 3 blocks, and a trend analysis indicating whether fees are rising, falling, or stable — sourced from a live Bitcoin Core node.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "current": {
   "low": 5,
   "high": 42,
   "medium": 18
  },
  "prediction": {
   "trend": "falling",
   "confidence_pct": 80
  },
  "next_3_blocks": {
   "block_1": 40,
   "block_2": 35,
   "block_3": 30
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/btcnode-uk-99f7ac13/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from btcnode.uk](https://www.zero.xyz/host/btcnode.uk/llms.txt)