Two-way sync design
Which system owns which field, how conflicts resolve, and what happens when one side is down. Written down before a line of code.
Custom Integrations and Middleware
Custom GoHighLevel integrations for the systems Zapier cannot reach
When GoHighLevel needs to exchange data with a booking platform, an EMR, a billing system or an internal database, we build the integration properly: authenticated webhooks, idempotent processing, retry logic and a middleware layer you own.
What custom GHL integration work includes: designing the data flow between GoHighLevel and external systems, building webhook receivers that verify signatures and handle retries, writing n8n or Node.js middleware with a Supabase or Postgres store for state and audit logs, mapping and transforming records in both directions, and monitoring the sync once it is live. Yotomations uses n8n, Supabase, Node/TypeScript and the GoHighLevel API v2.
Webhook receivers
Endpoints that verify HMAC signatures, deduplicate events, queue work and respond fast enough to keep the sender happy.
n8n and Node middleware
Flows for transformation and routing, with Node/TypeScript services where n8n is not enough. You own the code and the instance.
Supabase or Postgres state layer
A durable record of every event, mapping table and error so you can audit what happened and replay when needed.
EMR and booking platform connectors
Experience with Zenoti, specialty clinic EMRs and practice management platforms, including obtaining and validating vendor webhook documentation.
Monitoring and alerts
Failure alerts to Slack or email, dashboards for sync health, and runbooks your team can follow.
How it fits together
Our integration stack
GoHighLevel API v2n8nNode.js and TypeScriptSupabasePostgreSQLStripe APITwilioOpenAIWebhooks with HMAC verificationZenotiApify
How we deliver it
Integration discovery
We collect API documentation, webhook events, sample payloads and signing details from every system involved.
Data flow specification
A document showing every event, direction, transformation and failure path. You approve it before build.
Build and sandbox testing
Middleware is built and tested against sandbox or staging accounts with synthetic and real records.
Production rollout
Sync goes live with monitoring, a rollback plan and a support window.
Questions we get about this service
Why build middleware instead of using Zapier or Make?
For simple one-way triggers, Zapier is fine and we will say so. Two-way sync, deduplication, signature verification, replay and high volume are where no-code tools break down or become expensive. That is when we build middleware.
Can you integrate GoHighLevel with Zenoti?
Yes. We have architected a Zenoti to GoHighLevel marketing migration with ongoing two-way sync for a multi-brand, multi-location aesthetics group.
Can you integrate GoHighLevel with our EMR or practice management system?
In most cases. We start by obtaining the vendor's webhook event documentation, sample payloads and signing method. If the vendor exposes those, we can build a compliant receiver and sync.
Who owns the integration code?
You do. It is delivered in your own n8n instance, Supabase project or repository, with documentation.
What does an integration project cost?
It depends on the number of systems and events involved. Simple webhook receivers start as small fixed-scope projects; multi-system two-way syncs are delivered in milestones and quoted after a specification phase.
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Learn moreGoHighLevel Migrations
Move from Zenoti, HubSpot, Mindbody, Keap or spreadsheets into GHL without losing data or history.
Learn moreClinics and Specialty Practices
Practices on EMR platforms that need patient communication and lead follow-up automated safely.
Learn moreTalk to us about custom integrations and middleware
Book a 30-minute call. We review your current setup live and tell you what we would build, in what order, and what it would cost.
No pitch deck. We look at your current setup and tell you what we would do and what it would cost.Need more than GoHighLevel? Yotomations, our parent company, also builds AI agents, custom software and websites.