Stop Hand-Rolling Webhooks: How to Build a Reliable Integration Layer

Let’s say your app wants to:

• send a new lead to HubSpot
• notify your backend via webhook
• add the lead to a Mailchimp list

With an integration layer, your app doesn’t know about three different APIs. It only knows how to emit an event:

// backend (Node/TS) – pseudo example
import fetch from 'node-fetch';

import { createMeshesMachineToken } from './meshes-auth';

async function onLeadCreated(lead: {
  id: string;
  email: string;
  firstName?: string;
  lastName?: string;
  source: string;
}) {
  const jwtToken = await createMeshesMachineToken();

  await fetch('https://api.meshes.io/api/v1/events', {
    method: 'POST',
    headers: {
      Authorization: `Bearer ${jwtToken}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      workspace: 'ws_01...',
      event: 'lead.created',
      payload: lead,
    }),
  });
}

Rules + connections decide:

• which CRMs/webhooks get the event
• how the payload is transformed per destination
• when to retry or give up

Why this matters for developers

A dedicated integration layer gives you:

• One place for retries, backoff, and dead letters No more re-implementing retry logic per service.
• One schema per event, many projections Map the same lead.created payload into HubSpot, Salesforce, or webhooks without cluttering your app.
• Multi-tenant isolation Each customer / environment can have its own workspaces, connections, and rules without leaking credentials.
• Better observability You get event-level and destination-level logs: what failed, why, and what was retried.

When is it time to stop hand-rolling?

A few signals:

• You’ve built more than 2–3 external integrations.
• You’re debugging “why didn’t this webhook fire?” more than you’d like.
• You have multiple queues or worker pools doing similar things.
• Product wants to offer “integrations as a feature” to customers.

At that point, investing in a universal layer is cheaper than continuing to bolt one-offs onto your core app.

If you’d rather not build that in-house, that’s the whole idea behind Meshes:

“Emit events, define rules, plug in destinations. The platform handles fan-out, retries, and delivery.”

You keep your app simple—and still ship integrations fast.