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API integrations that don't wake you up.

Your tools, actually talking to each other, with retries, logging, and alerts for the day one of them stops.

IN ONE ANSWER

Dev4ager connects the tools your product depends on: CRMs, payments, calendars, messaging, AI APIs, with production-grade reliability: idempotent webhooks, retry queues, monitoring, and alerts. Legacy and undocumented APIs welcome.

What we build

"Just connect X to Y" is a sentence that hides a week of edge cases: rate limits, auth refreshes, duplicate events, the other side going down at 2 a.m. We build integrations that expect all of it, so data flows and stays flowing.

  • Third-party integrations: Stripe, HubSpot, Salesforce, Slack, WhatsApp, QuickBooks, Shopify
  • Webhook receivers with signature checks, idempotency, and retry queues
  • Scheduled sync jobs with drift detection and reconciliation
  • AI API integrations (Claude, OpenAI) with fallbacks and cost controls
  • Your own public API: versioned endpoints, auth, docs
  • Monitoring and alerting so failures page us, not your customers

How we build it

  1. Map. Which system owns each field, what triggers a sync, what failure should do.
  2. Contract. A short spec of payloads and edge cases: cheap to review, expensive to skip.
  3. Build + review. AI-assisted implementation, senior review, replay-tested against real payloads.
  4. Ship + monitor. Deployed with logging, dashboards, and alerts from day one.

Stack we reach for

Node.js TypeScript Webhooks n8n Supabase Queues REST/GraphQL

A great fit if…

  • Someone on your team re-types data between two systems every day.
  • A Zapier setup grew into a Jenga tower nobody dares touch.
  • Your product needs a partner integration to close bigger deals.

API integration FAQs

Which APIs and platforms can you integrate?

The usual suspects: Stripe, HubSpot, Salesforce, Google/Microsoft calendars, Slack, WhatsApp, Shopify, QuickBooks, Claude and OpenAI, plus anything with an HTTP interface. If it has an API (or even just CSV exports), we can connect it.

The API we need is legacy or badly documented. Can you still integrate it?

Usually, yes. We reverse-engineer from network traffic and sample payloads, wrap the mess behind a clean interface we control, and isolate the weirdness so your codebase never has to know about it.

How do you make integrations reliable, not just working?

Idempotent handlers, retry queues with backoff, dead-letter capture for failures, and alerting when a sync misbehaves. The difference between a demo integration and a production one is what happens when the other side is down.

One-way sync or two-way sync?

One-way when a single system owns the truth (usually right). Two-way when both sides genuinely edit the same records; it needs conflict rules, and we design those explicitly rather than letting the last write silently win.

Related

AI Agents & Automation Payment Integration Supabase Backends Guide: Our AI workflow

Two systems that should be talking?

Name them. We'll map the sync, flag the gotchas, and quote it, fast.

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