HighLevel API Documentation

This is the complete API documentation for connecting to the HighLevel API using MindCloud's Universal API. If you are new to MindCloud, start with the Introduction to see how one API can sit in front of many different apps.

MindCloud is an integration company that offers one normalized API to access 3,100+ apps from a single place. It cleans up provider-specific quirks, keeps requests and responses consistent, and centralizes authentication so you do not need to manage separate flows for every app. Browse other apps.

Meet HighLevel: connect business data and workflows through MindCloud's Universal API. Keep reading to get started.

Quickstart

Before you run your first HighLevel request, you need three things:

1. A MindCloud account — sign in or create an account at MindCloud.
2. A MindCloud API Key — create one in API Keys. Keep it on your server.
3. At least one HighLevel connection — create or choose one in Connections. Note its connectionId.

Every HighLevel action uses the same URL pattern:

POST https://connect.mindcloud.co/v2/universal/apps/gH/actions/{actionSlug}/run

You need a MindCloud API Key and a HighLevel connection. Then call an action such as List Calendars:

curl --request POST \
  --url "https://connect.mindcloud.co/v2/universal/apps/gH/actions/list-calendars/run" \
  --header "Authorization: Bearer $MINDCLOUD_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
  "connectionId": "$CONNECTION_ID",
  "arguments": {}
}'

Every response comes back in the same envelope, with your rows in a data array:

{
  "success": true,
  "data": [
    { "id": "1042", "name": "Ava" }
  ],
  "meta": {}
}

After your first request works, use Shape your requests to control arguments, pagination, filtering, fields, and errors.

Authenticate with a MindCloud API Key plus a connectionId for your HighLevel account. See HighLevel API Authentication for the full flow and how to get your connection credentials.

HighLevel actions

All 27 published actions for this HighLevel version. Each page documents the endpoint, arguments, and response controls.

• POSTCreate Appointment
• POSTCreate Calendar
• POSTCreate Contact
• POSTCreate Contact Note
• POSTCreate Product
• GETDelete Product
• GETGet Appointment
• GETGet Contact
• GETGet Contact Notes
• GETGet Contacts
• GETGet Conversations
• GETGet List of Files
• GETGet Locations
• GETGet Pipelines
• GETGet Product
• GETList Calendar Events
• GETList Calendars
• GETList Payment Integration Providers
• GETList Products
• GETSearch Contacts
• GETSearch Opportunities
• PUTUpdate Appointment
• PUTUpdate Calendar
• PUTUpdate Contact
• GETUpdate Product
• POSTUpsert Contact
• POSTUpsert Opportunity

Related apps

More apps on the Universal API, behind the same REST shape. Or browse all apps.

Google SheetsGmailSlackGoogle CalendarGoogle DriveNotionGoogle FormsMailchimp