The GoHighLevel API lets software read and write your HighLevel data (contacts, opportunities, calendars and more) with OAuth, and its documented limits are a burst of 100 requests per 10 seconds and 200,000 requests per day, counted per Marketplace app and separately for each location or company. OAuth access tokens are valid for a day, and refresh tokens last a year unless used, with each use issuing a new one. You use the API when native features and webhooks cannot do the job: a two-way sync with your own system, high-volume updates, or an app other agencies install. This page gives the facts we verified in HighLevel's developer documentation on October 18, 2026, a design checklist for staying inside the limits, and what we could not confirm (including whether HighLevel offers an official MCP server).
What can you do with the GoHighLevel API?
You need the GoHighLevel API mainly for two-way syncs with your own database or practice software and for bulk updates, since forms, workflow starts and outbound pushes can use webhooks instead.
| Use | API needed? | Simpler route first |
|---|---|---|
| Send website form data into GoHighLevel | Rarely | Embedded form or inbound webhook |
| Start a workflow from another system | Rarely | Inbound webhook trigger |
| Push data out when something happens | Rarely | Outbound webhook action |
| Two-way sync with your own database or practice software | Yes | None; this is what the API is for |
| Bulk updates or reports across many records | Yes | Smart lists and bulk actions for small jobs |
| A Marketplace app | Yes | None |
Our integration rule is native first, webhook second, API when it matters; see GoHighLevel integrations.
Source: arithmetic on HighLevel's documented limit of 100 requests per 10 seconds (10 a second), one request per contact, nothing else running
What are the GoHighLevel API rate limits?
The GoHighLevel API allows 100 requests per 10 seconds and 200,000 requests a day, counted per Marketplace app and separately for each location or company.
| Limit | Value | Counted |
|---|---|---|
| Burst | 100 requests per 10 seconds | Per Marketplace app, separately for each resource (location or company) |
| Daily | 200,000 requests | Same |
Source: HighLevel's Marketplace developer FAQ. For scale: 100 requests per 10 seconds is 10 a second; a sync that touches 5,000 contacts one at a time takes at least 500 seconds even with no other traffic.
How do GoHighLevel API tokens and OAuth work?
GoHighLevel API access tokens last a day and refresh tokens a year unless used, so your code must store each new refresh token or the connection dies silently.
| Item | Detail |
|---|---|
| Access token | Valid for a day |
| Refresh token | Lasts a year unless used; each use issues a new refresh token valid for another year |
| Consequence | Your code must refresh and store the new refresh token every time, or the connection dies silently after a year of inactivity |
| Versions | The docs show a version selector (v3) and the FAQ speaks of "API 2.0". Check the endpoint documentation for each call |
We did not verify private integration tokens, webhook event lists or an official MCP (Model Context Protocol) server from HighLevel; our searches found only third-party listings. If you are planning an AI-agent connection, confirm the current official options in HighLevel's developer documentation first.
A design checklist for a safe GoHighLevel API integration
- Queue requests and send them at a rate under the burst limit.
- Back off and retry on rate-limit and server errors, with a cap.
- Store and rotate tokens in a secrets store, not in a workflow note.
- Log every call and every failure, and alert on repeated failures.
- Make updates idempotent so a retry never duplicates a contact.
- Document the data flow, the fields mapped and how to rotate credentials.
The developer questions to ask are on hiring a GoHighLevel developer. We build private integrations as part of our CRM implementation; the first call is free.
Frequently asked questions about the GoHighLevel API
What are the GoHighLevel API rate limits?
100 requests per 10 seconds and 200,000 per day, per Marketplace app and per location or company, according to HighLevel's developer FAQ.
How long do GoHighLevel API tokens last?
GoHighLevel API access tokens are valid for a day. Refresh tokens last a year unless used, and each use issues a new one valid for another year.
Which version of the GoHighLevel API should I use?
Use the version in the current endpoint documentation. The docs show v3 and still refer to "API 2.0" in places, so check each endpoint.
Does GoHighLevel have an official MCP server?
We could not confirm one from official sources. Third-party MCP servers exist; review their code and permissions before connecting one to a client account.
Can I use webhooks instead of the API?
Often yes, for starting workflows from other systems and sending data out. Use the API when you need two-way sync or volume.
Do I need a developer to use the API?
Yes, or a tool such as Zapier or Make that uses it for you. See GoHighLevel developer.
Can you build a GoHighLevel API integration?
Yes, we scope it on a free call and document the result.