Satoshi Quote L402 API

Real Satoshi Nakamoto quotes from forums and emails.

10 sats per call, paid over the Lightning Network. No API key and no signup: the first request answers 402 Payment Required with a Lightning invoice, and repeating the request with the proof of payment returns your data.

l402_satoshi_quote 10 sats

Parameters

topic Optional topic filter

Call it with curl

The first call answers 402 with a Lightning invoice in the WWW-Authenticate header. Pay it from any Lightning wallet, then repeat the call with the L402 token and preimage.

cURL

curl -X POST https://lightningfaucet.com/api/ \
  -H "Content-Type: application/json" \
  -H "Authorization: L402 $MACAROON:$PREIMAGE" \
  -d '{"action":"l402_satoshi_quote","topic":"privacy"}'

What comes back

A successful call returns JSON, with the delivered content merged over the standard L402 receipt fields. Example values, not live data.

JSON

{
    "success": true,
    "http_code": 200,
    "service": "satoshi_quote",
    "timestamp": "2026-09-11T15:04:05+00:00",
    "paid_sats": 10,
    "quote": "As an additional firewall, a new key pair should be used for each transaction to keep them from being linked to a common owner.",
    "author": "Satoshi Nakamoto",
    "source": "Bitcoin Whitepaper, Section 10",
    "date": "2008-10-31",
    "topic": "privacy"
}

Call it from an AI agent

With lightning-wallet-mcp the payment is handled for you. From the CLI:

Terminal

lw pay-api "https://lightningfaucet.com/api/l402/satoshi_quote?topic=privacy"

In Claude Code, Cursor or any MCP host, ask the agent to call pay_l402_api with that URL. The fee is 1% of the price, rounded down, so calls under 100 sats carry no platform fee.

Questions

How much does the Satoshi Quote API cost?
Each call costs 10 sats, paid as a Lightning invoice at request time. There is no subscription, no minimum and no monthly bill: you are charged for the calls you make.

Do I need an API key or an account?
No. Payment is the authentication. The first request answers 402 Payment Required with a Lightning invoice; settling it returns a preimage that authenticates the retry.

What does Satoshi Quote return?
A JSON object carrying quote, author, source, date and topic. See the example response above for the exact shape.

Related endpoints

Mempool Heatmap 30 sats Profanity Filter 10 sats Dad Joke 50/100 sats Quote 10/30 sats Joke 50/100 sats Fortune 50/100 sats

All Fun & Content endpoints · How L402 authentication works · List your own API on the gateway