# btcnode.uk Bitcoin Mempool Status

> btcnode.uk Bitcoin Mempool Status 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 live Bitcoin mempool statistics from a full node including pending transaction count, mempool size in MB, and congestion level

## Facts

- Endpoint: GET https://btcnode.uk/api/mempool
- 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-9a32dbdd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GbLWPDCVLA1aM-jexSOBX

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-9a32dbdd
```

Example prompt: What does the Bitcoin mempool look like right now — how many transactions are pending, how big is it in MB, and is the network congested?

## When to prefer this

Use this endpoint when you need real-time Bitcoin mempool status from a live full node rather than a third-party aggregator — ideal for agents making fee decisions, timing transaction submissions, or monitoring network congestion programmatically. Prefer this over general blockchain APIs when you specifically need mempool depth and congestion signals.

## Known failure modes

- Node temporarily offline or syncing — returns 5xx error
- Network congestion causing delayed response
- Stale data if node is behind chain tip
- Rate limit exceeded for repeated calls within short window

## 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 live Bitcoin mempool data from a real Bitcoin Core node: the count of unconfirmed pending transactions, total mempool size in megabytes, and a congestion level indicator to help assess whether the network is busy or clear.

## 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": {
  "mempool_mb": "85.3",
  "pending_tx": 42000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/btcnode-uk-9a32dbdd/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)