One engine.
Both doors.

// deliver one payload to a destination
await fetch("https://api.emithook.com/v1/send", {
  method: "POST",
  headers: { Authorization: `Bearer ${EK_KEY}`,
             "Idempotency-Key": invoiceId },
  body: JSON.stringify({
    destination: "dst_acme",
    event_type:  "invoice.created",
    payload:     { amount: 4999, currency: "INR" }
  })
});  // → 202 { message_id }

// fan out to a tenant's subscribed endpoints
await emithook.app("acme").send({
  event_type: "invoice.created",
  payload: { id: "INV-2026-001", amount: 4999 }
});
// → delivered to every endpoint on invoice.*
//   each signed, retried & logged independently

// receivers verify with the open Standard Webhooks lib
import { Webhook } from "standardwebhooks";

const wh = new Webhook(process.env.WHSEC);
app.post("/hooks", (req, res) => {
  const evt = wh.verify(req.rawBody, req.headers); // throws if invalid
  handle(evt);
  res.sendStatus(200);
});

# operate & query from your terminal
npm i -g @emithook/cli
emithook replay --dlq --endpoint /razorpay-live
emithook send -d dst_acme -t invoice.created -f body.json
# same scoped API powers console, CLI & MCP