One line of Express middleware for the agentic web.

Built to stay out of your way

• The metering hook can throw, crash or hang — serving continues.
• Your uptime never depends on Wayleave's.
• Local verification runs in-process; nothing leaves your server that you don't send.
• Drain gate.sink.close() during graceful shutdown.

Quickstart

npm install wayleave

import Wayleave from 'wayleave';

const gate = new Wayleave({
  meter: { apiKey: process.env.WAYLEAVE_METER_KEY },
});
app.use(gate.express()); // before the routes you want to observe

Questions

Related