Monetize your API for
AI agents.

Software paying software, per request, over Lightning. Drop into your existing API — your subscriptions, rate limits, and API keys stay exactly as they are.

⚡ Run the agent Start free trial

Real Lightning · 1 sat per call · ~1 second settlement

Watch an agent buy from this API.

Click the button. An autonomous agent on our server hits a paid endpoint, gets a 402 with a Lightning invoice, pays it from a pre-funded wallet, and retries with proof of payment — all in under two seconds. This is exactly what your customers' agents will do against your API once you integrate.

Weather forecast 1 sat Bitcoin price 1 sat

City:

Demo only — enter just the city name (e.g. "Miami", not "Miami, FL"). Major cities work best; not every city is in the upstream geocoder.

What you just saw, in one sentence

L402 turns payment into authorization. The agent paid the invoice, retried the same request with the preimage as proof, and your API checked the proof and served the response. No accounts, no sign-up, no card on file — just a tiny payment, a cryptographic receipt, and the response.

AI agents are starting to buy.

They book travel. They search the web. They run workflows. They call APIs. They pay for tools.

But card rails aren't built for them. Stripe assumes a human identity, a checkout flow, a billing address, a fraud history. Agent workflows have none of those — so today, agent traffic gets eaten by the API provider or blocked at the gate.

Lightning per-request payments fit. The agent hits your endpoint, gets a 402, pays in under a second, and retries with proof of payment. You get paid. The agent gets in.

A new buyer class is forming. The cost of ignoring it grows as fast as the agents do.

An additional revenue stream — not a replacement.

Keep your existing pricing. Subscriptions, tiered rate limits, API keys — all unchanged. Lightning per-request runs alongside on the same endpoints.
Reach buyers your card processor can't. Card rails are built for human identity and checkout flows — agent workflows need machine-native payment and auth rails instead. Lightning fits. Capture revenue from a buyer class that didn't exist three years ago.
Settles in seconds. Final. No chargebacks, no 30-day Stripe hold, no card-network 2.9% cut. Money's in your provider account on the same call.
You keep every sat your customers pay. Lightning Enable charges a flat monthly subscription, not a percentage. One million 1-sat calls earn you 1,000,000 sats. The whole thing.

Gate a route. Get paid.

The middleware is a tiny wrapper around our hosted producer API. Pick your stack, install one package, gate a route with an attribute or a config line.

// .NET 8 / ASP.NET Core minimal API
using L402Server.AspNetCore;

builder.Services.AddL402AspNetCore(opts =>
    opts.ApiKey = builder.Configuration["LightningEnable:ApiKey"]);
app.UseL402();

app.MapGet("/api/data", () => data)
    .WithMetadata(new L402Attribute { PriceSats = 100 });

// Node + Express
import { l402 } from "l402-express";

app.use("/api/premium", l402({
  apiKey: process.env.LIGHTNING_ENABLE_API_KEY,
  priceSats: 100,
}));

app.get("/api/premium/data", (req, res) => res.json(data));

Install: dotnet add package L402Server.AspNetCore

Reference app: github.com/refined-element/l402-example-aspnet

Configured from your dashboard.

Set per-endpoint pricing, watch revenue accrue in real Bitcoin, and manage every API you've monetized — without touching code.

Lightning Enable dashboard home — total proxies, active proxies, total requests, total revenue in sats, and a Recent Proxies table — **One-screen overview.** Total revenue, request volume, and your active APIs in a single view.

Lightning Enable proxy pricing tab — every endpoint with its individual sat price, manifest visibility, and L402 status — **Per-endpoint pricing.** Different routes, different rates — set in the UI, applied at runtime.

Live infrastructure, used today.

Real Lightning, this page

The demo above isn't a mock. Real Bitcoin, real Lightning, same producer API your customers' agents will hit.

Live merchant integrations

L402 ecommerce on Shopify and Kentico. Live storefronts: Great Ghee and Salt of the Earth — agents and bitcoin-aligned customers checking out in sats.

In the agent ecosystem

MCP clients, agent frameworks, and developer integrations across the Lightning Network. Our MCP server and HTTP clients are MIT, published on every major registry.

Pricing.

Subscription, not a percentage. One million 1-sat requests earn you 1,000,000 sats — we don't touch any of them. Your settlement provider (Strike or OpenNode) custodies every payment.

Agentic Commerce — Individual

$99/mo

For solo API builders, indie SaaS, and side-project APIs going to production.

Unlimited L402 endpoints — gate every route on every API you own
Strike as settlement provider
Per-endpoint pricing — different routes can charge different rates
Live dashboard + per-request payment feed
30-day free trial

Start free trial ⚡ Pay with Bitcoin — 10% off

Agentic Commerce — Business

$299/mo

For teams and platforms with multiple APIs or anyone who wants hands-on onboarding help.

Everything in Individual
Strike or OpenNode as settlement provider
White-glove onboarding — we help you get set up
Direct founder access — no ticket queues, talk to the team that built this
30-day free trial