# Bitcoin Benji Mempool Predict API

> Bitcoin Benji Mempool Predict API is a paid API for AI agents from api.bitcoinbenji.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns AI-generated predictions about the Bitcoin mempool, such as fee estimates, congestion forecasts, or transaction confirmation timing, paid per-call via Lightning/L402.

## Facts

- Endpoint: GET https://api.bitcoinbenji.com/mempool/predict
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bitcoin-benji-mempool-predict-api-94672332
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FSllODRI7QUz7c5fkrdbc

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 bitcoin-benji-mempool-predict-api-94672332
```

Example prompt: What does Bitcoin Benji's mempool AI predict for transaction fees right now — is the network congested and should I send my transaction immediately or wait?

## When to prefer this

Choose this endpoint when you need AI-powered, real-time Bitcoin mempool fee predictions with no API key or subscription setup — ideal for agents that pay per call via Lightning Network and need dynamic fee intelligence for transaction timing decisions. Prefer this over static fee estimators when you want ML-based forecasting rather than simple percentile-based fee suggestions.

## Known failure modes

- 402 Payment Required if Lightning/L402 payment is not included or fails
- Stale predictions if mempool data feed is lagging
- Empty or null prediction if mempool is in an unusual state
- Network timeout if Lightning payment settlement is slow
- Rate limiting or quota errors if payment is not processed correctly

## How this service works

L402-gated APIs: real-time Bitcoin mempool intelligence and private AI inference. Pay-per-call via Lightning. Zero API keys. Zero subscriptions.

## Output

A JSON response containing AI-generated mempool predictions, likely including estimated fee rates (sat/vByte), network congestion level, predicted confirmation times at various fee tiers, and possibly a forecast window — all derived from real-time mempool analysis.

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bitcoin-benji-mempool-predict-api-94672332/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.bitcoinbenji.com](https://www.zero.xyz/host/api.bitcoinbenji.com/llms.txt)