Guide, integration

n8n and GoHighLevel integration: patterns that hold up

To connect n8n and GoHighLevel, send events from a HighLevel workflow to an n8n Webhook node, then write back through the HighLevel API using a Private Integration Token. Secure the webhook with header authentication, make writes safe to repeat, respect the published rate limits, and send failures to an error workflow.

Last updated November 1, 2026

What does the basic pattern look like?

1. 1A HighLevel workflow fires on an event and calls the n8n webhook URL with the contact's data.
2. 2The n8n Webhook node checks a shared header and responds.
3. 3n8n does the work, such as calling another system or reformatting data.
4. 4An HTTP Request node writes the result back to HighLevel.
5. 5Any failure routes to an error workflow that tells a person.

How do you secure the webhook?

n8n's Webhook node supports Basic auth, Header auth, JWT auth and n8n User Auth. Header auth is the simple choice here. Add a long random secret as a custom header in the HighLevel webhook action, and require the same header in n8n. Without this, anyone who finds the URL can feed your workflow.

What does a write back to HighLevel look like?

This is an HTTP Request node calling the contact upsert endpoint. Upsert is the safer choice for automation, because a retried request updates the same contact rather than creating a second one. Check the field names against the current API reference before you rely on them.

POST https://services.leadconnectorhq.com/contacts/upsert
Authorization: Bearer YOUR_PRIVATE_INTEGRATION_TOKEN
Version: 2021-07-28
Content-Type: application/json

{
  "locationId": "YOUR_LOCATION_ID",
  "email": "lead@example.com",
  "firstName": "Sam",
  "phone": "+15555550100",
  "tags": ["from-n8n"]
}

What rate limits apply?

Responses carry headers such as X-RateLimit-Remaining and X-RateLimit-Daily-Remaining. For a bulk sync, batch your items in n8n and wait between batches rather than sending everything at once.

What error handling does a production workflow need?

• Retries on the HTTP Request node, for temporary failures.
• An n8n error workflow that alerts a person with the failed record.
• A check for duplicate events, because webhooks can arrive more than once.
• A short response from the webhook first, with slow work done after it.

Should you use n8n's HighLevel node or HTTP Request?

n8n lists a HighLevel credential type, so check its current node for the operation you need. If it does not cover an endpoint, HTTP Request reaches the whole API. Tokens should sit in n8n credentials, never in a workflow's plain fields.