# Bitcoin Benji Fee Quote API

> Bitcoin Benji Fee Quote API is a paid API for AI agents from api.bitcoinbenji.com, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-14).

Returns a real-time Bitcoin mempool fee quote, providing recommended transaction fee rates for the current network conditions.

## Facts

- Endpoint: GET https://api.bitcoinbenji.com/bitcoin/fee-quote
- Price: $0.015/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-fee-quote-api-2609ba62
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AgwJ06SCbK0wniasC2oBJ

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-fee-quote-api-2609ba62
```

Example prompt: What are the current Bitcoin mempool fee rates right now — I need to know what sat/vbyte to use for a fast confirmation?

## When to prefer this

Choose this endpoint when you need real-time, pay-per-call Bitcoin fee data without committing to a subscription or API key. Ideal for agents, bots, or wallets that need occasional mempool fee lookups billed per-use via Lightning Network micropayments. Prefer over free public APIs when freshness, reliability, and monetization-free access are important.

## Known failure modes

- Payment required (402) if Lightning payment or L402 token is not provided
- Stale or temporarily unavailable mempool data if Bitcoin node connectivity is disrupted
- Rate limit or invalid token errors if payment credentials are expired
- Network timeout if mempool data source is temporarily unavailable

## 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 current recommended Bitcoin transaction fee rates, likely including sat/vbyte values for different priority levels (e.g. low, medium, high / next-block), reflecting live mempool conditions at time of request.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bitcoin-benji-fee-quote-api-2609ba62/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)