Gate, meter & monetize any feature in 3 lines.

Bismite is the billing runtime that lives in your code — and never takes your app down.

app/api/chat/route.tsconst access = await bismite.check(userId, "chat-message");   // gate
if (!access.allowed) return Response.json({ upgradeUrl: access.upgradeUrl }, { status: 402 });

// ...your expensive LLM call...

await bismite.record(userId, "chat-message", { tokens });        // meter

Never goes down. Plan checks run locally; the usage meter fails open. Your app never breaks because of us.

Correct under load. Atomic, period-scoped usage counts across every serverless instance — no lost or double counts.

Monetize instantly. Limit reached → the right paywall → Stripe Checkout → unlocked, with no deploy.

Drop it into your stack

Two calls around the expensive work.

Same SDK, same bismite.config — framework-agnostic. Gate before, meter after.

app/api/chat/route.tsimport { bismite } from "@/bismite.config";

export async function POST(req: Request) {
  const { userId, message } = await req.json();

  // GATE — before the expensive call
  const access = await bismite.check(userId, "chat-message");
  if (!access.allowed)
    return Response.json({ upgradeUrl: access.upgradeUrl }, { status: 402 });

  const reply = await callYourLLM(message);

  // METER — after (you only know the cost once it returns)
  await bismite.record(userId, "chat-message", { count: 1 });
  return Response.json({ reply });
}

pages/api/chat.tsimport type { NextApiRequest, NextApiResponse } from "next";
import { bismite } from "@/bismite.config";

export default async function handler(req: NextApiRequest, res: NextApiResponse) {
  const { userId, message } = req.body;

  const access = await bismite.check(userId, "chat-message");   // gate
  if (!access.allowed)
    return res.status(402).json({ upgradeUrl: access.upgradeUrl });

  const reply = await callYourLLM(message);

  await bismite.record(userId, "chat-message", { count: 1 });   // meter
  res.json({ reply });
}

server.tsimport express from "express";
import { bismite } from "./bismite.config";

const app = express();
app.use(express.json());

app.post("/chat", async (req, res) => {
  const { userId, message } = req.body;

  const access = await bismite.check(userId, "chat-message");   // gate
  if (!access.allowed)
    return res.status(402).json({ upgradeUrl: access.upgradeUrl });

  const reply = await callYourLLM(message);

  await bismite.record(userId, "chat-message", { count: 1 });   // meter
  res.json({ reply });
});

Pricing

Pay for tracked users, nothing else.

MTU = Monthly Tracked Users — the only billed meter. Calls are a fair-use ceiling, never billed.

Free

€0

1,000 MTU / month

Test + live keys
Usage dashboard
Blocks past the limit

Pro

€19 / mo

10,000 MTU included

€8 per extra 1,000 MTU
Overage billed, never blocked
Higher call ceiling

Enterprise

Custom

Unlimited MTU

Custom limits & SLA
Volume pricing
Priority support

Test traffic is isolated and never counts toward billing.

Ship a paywall today.

Create a project, copy your key, gate a feature in five minutes.

For developers building AI apps. npm install bismite