# l402.space — Universal 402 Gateway

Any wallet. Any paid API. Any rail.

Pay for any payment-gated API with any agentic wallet — over L402 (Lightning), x402
(USDC), or MPP (Lightning or Tempo). You pay l402.space; it pays the upstream on your
behalf over whichever rail it speaks — x402 (USDC), MPP (Tempo stablecoin or Lightning),
or L402 — and returns the response.

## Usage

Point an L402 client at: GET/POST https://l402.space/<url-encoded-upstream-url>

URL-encode the full upstream URL (including its query string) and append it. Your
method and body are forwarded to the upstream unchanged.

Example:
  https://l402.space/https%3A%2F%2Fx402.twit.sh%2Ftweets%2Fuser%3Fusername%3Dgetalby
  proxies https://x402.twit.sh/tweets/user?username=getalby

## Paying

Use any agentic wallet that speaks L402, x402, or MPP to make the payment. If you
don't have one installed, you can try the Alby Payments Skill:
  npx skills add getAlby/payments-skill

With it, a paid fetch to the proxied URL looks like:
  npx -y @getalby/cli@latest fetch "https://l402.space/<url-encoded-upstream>" --max-amount 1000 --currency BTC --unit sats --network lightning

## Discovery — finding paid APIs to call

- GET https://l402.space/api/services — live directory of paid API hosts already used
  through this gateway, with each host's docs URL, price range, volume, and delivery
  reliability (successful deliveries / payments received) as observed via l402.space.
- https://402index.io/llms.txt — the 402 Index, a protocol-agnostic directory of
  80,000+ paid API endpoints (L402 + x402 + MPP). Search it with
  GET https://402index.io/api/v1/services?q=<keywords> (also filterable by protocol,
  category, and health). Proxy any endpoint you find through l402.space to pay it
  over your own rail.

## More

- Full API docs (markdown): https://l402.space/docs
- OpenAPI 3.1 spec: https://l402.space/openapi.json
- Contact (questions, issues, listing a service): hello@getalby.com