GoHighLevel n8n integration: what the HighLevel node can do, how it authenticates, and its limits

n8n connects to GoHighLevel through a built-in HighLevel node

GoHighLevel integrates with n8n through a HighLevel node that ships with n8n, so no marketplace app or third-party connector is needed. Per n8n's documentation the node can create, update, delete and fetch contacts, opportunities and tasks, book appointments and read free calendar slots. It talks to HighLevel's API using credentials you set up once.

It is an action node. n8n's list of trigger nodes, as read on 3 October 2026, has no HighLevel trigger, so anything that should start when something happens in a client account has to be sent to n8n by webhook.

What the HighLevel node can do

That is 17 operations on four resources. Conversations, messages, workflows, invoices and sub-account management are not in the list. For those, n8n's docs point to the HTTP Request node: choose Predefined Credential Type under Authentication, pick the service and reuse the same HighLevel credential to call any endpoint the API offers.

Authentication: OAuth2 on API v2

n8n documents two methods: an API key for HighLevel's API v1, and OAuth2 for API v2. It tells you to use OAuth2 for new credentials because v1 is deprecated. HighLevel's own article confirms that v1 reached end of support on 31 December 2025 and that the option to generate new API keys is being removed.

1. Create a HighLevel developer account.
2. In My Apps, click Create App and set Distribution Type to Sub-Account.
3. Add the scopes n8n lists: locations.readonly, contacts.readonly, contacts.write, opportunities.readonly, opportunities.write and users.readonly.
4. Copy the OAuth Redirect URL from n8n into the app as a Redirect URL.
5. Copy the Client ID and Client Secret from HighLevel into the n8n credential.
6. Enter the same scopes in the n8n credential as a space-separated list, then connect.

Because the app's distribution type is Sub-Account, each authorization is for one client account. An agency running workflows for ten clients keeps ten credentials, which also keeps client data apart.

Plan and cost on both sides

n8n's docs do not name a HighLevel plan. HighLevel's pricing page lists basic API access first under Unlimited at $297 a month; HighLevel's API help article says Starter also has it. Both put advanced API access on Agency Pro at $497 a month, and the help article ties OAuth 2.0 to the advanced tier. These statements do not line up cleanly, so test the OAuth connection on your actual plan before you scope client work. Plan prices were read on 3 October 2026.

On the n8n side, the pricing page showed cloud plans in euros when we read it, so we do not quote a dollar figure. It also states that a self-hosted Community Edition is available on GitHub. Our GoHighLevel vs n8n comparison covers when to automate inside HighLevel workflows and when to move logic out.

Getting GoHighLevel events into n8n without a trigger node

1. In n8n, add a Webhook node as the workflow's trigger and copy its test URL.
2. In the client's sub-account, open Automation and create or edit a workflow with the trigger you want, such as a tag being added.
3. Add the Webhook action, keep the POST method and paste the n8n URL.
4. Send a test and confirm the payload arrives in n8n.
5. Add HighLevel node steps after it, then publish the n8n workflow and swap in the production URL.

n8n's Webhook node has separate test and production URLs. The test URL only works while you are listening in the editor, so a workflow left on it will stop receiving data once you close the tab.

Known limits and what to check afterwards

• Rate limits. HighLevel caps API v2 at 100 requests per 10 seconds and 200,000 per day, per app and per location or company. A bulk loop over a large contact list can hit the burst limit.
• Narrow scopes. The six scopes above cover the node's contact and opportunity work. Calls to other endpoints through the HTTP Request node may need extra scopes added to both the app and the credential.
• No support desk for builds. HighLevel says its support does not audit API setups or give developer consulting.
• Duplicates. Use the contact Create or update operation and not a plain create when the same lead can arrive twice.

After go-live, check that a test contact landed in the intended sub-account, that an opportunity sits in the right pipeline stage, and that a booked appointment shows on the correct calendar. If your needs stop at pushing leads in and reacting to pipeline changes, the simpler Zapier connection through LeadConnector may be enough. Agencies that keep automations in their own n8n instance should also read who owns the tools before a client leaves.