How to Connect Your App to the GHL API

Seamless GHL API and Your App integration for Email ISV workflows

How to connect the GHL API to Your App

This guide walks you through authenticating, wiring endpoints, and automating data flows between the GHL API and Your App using the Email ISV API, with practical examples and no-code tips.

Authentication with the GHL API

GHL supports secure authentication via OAuth 2.0 and API keys. In most scenarios, start with OAuth 2.0 for user-scoped access and refresh tokens, then use scoped keys for app-level access.

App Authentication

Store credentials securely (prefer environment variables or a secrets manager), rotate keys regularly, and never expose tokens in client-side code. Use Zapier or a server to proxy requests when possible.

GHL API Endpoints Used in Abstract

Endpoint1: Create or Update Lead; Endpoint2: Retrieve Lead; Endpoint3: Create or Update Contact; Endpoint4: List Contacts; Endpoint5: Create Task; Endpoint6: Create Note; Endpoint7: Retrieve Company; Endpoint8: List Companies; Endpoint9: Add Tag; Endpoint10: Retrieve Tag; Endpoint11: Get Activity; Endpoint12: Create Pipeline; Endpoint13: Update Contact; Endpoint14: Get Activity Log; Endpoint15: Sync Deals; Endpoint16: Merge Records; Endpoint17: Delete Record; Endpoint18: Add Attachment; Endpoint19: Add Lead Score; Endpoint20: Create Appointment; Endpoint21: Update Appointment; Endpoint22: List Appointments; Endpoint23: Get User; Endpoint24: List Webhooks; Endpoint25: Create Webhook; Endpoint26: Delete Webhook; Endpoint27: Execute Custom Endpoint; Endpoint28: Search; Endpoint29: Batch Upsert; Endpoint30: Upsert Contact; Endpoint31: Upsert Lead; Endpoint32: Create Note; Endpoint33: Get Lead; Endpoint34: Get Contact; Endpoint35: Get Pipeline; Endpoint36: List Tasks; Endpoint37: Create Task; Endpoint38: Update Task; Endpoint39: List Tags; Endpoint40: Get User Settings; Endpoint41: Update User Settings; Endpoint42: Create Automation; Endpoint43: Run Automation; Endpoint44: Get Automation; Endpoint45: List Workflows; Endpoint46: Create Workflow; Endpoint47: Update Workflow; Endpoint48: Delete Workflow; Endpoint49: Get Webhook; Endpoint50: List Integrations; Endpoint51: Create Integration; Endpoint52: Update Integration; Endpoint53: Delete Integration; Endpoint54: Ping

Top 3 connection patterns between GHL API and Your App

1) Lead creation and sync

Trigger: New lead created in Your App

Actions: Create or update lead in GHL, attach to contact, assign to a pipeline, and tag for segmentation

POST /leads

email, first_name, last_name, phone

Top 3 connection patterns between GHL API and Your App

2) Contact sync and enrichment

Trigger: New or updated Contact in Your App

Actions: Create or update Contact in GHL, link to Leads, sync custom fields

POST /contacts

email, name, company, phone

Top 3 connection patterns between GHL API and Your App

3) Task and activity synchronization

Trigger: New Task in Your App

Actions: Create Task/Activity in GHL, set due date, assign owner

POST /tasks

title, due_date, owner_id

No-code Benefits of Connecting GHL API with Your App

Zero-code integration with the Zapier App Connector lets you connect systems in minutes, not weeks.

Iterate quickly: test flows in a safe sandbox and deploy live when ready.

Reuse templates and common workflows across teams to scale your integration.

Key Terms and Glossary

Elements include endpoints, triggers, actions, authentication, and field mappings. The processes describe how data moves between GHL and Your App.

GHL API

The programmatic interface for interacting with GHL resources—leads, contacts, tasks, notes, and more—via REST endpoints.

Webhook

A user or system-initiated HTTP callback that notifies your app of events in GHL (e.g., new lead, updated contact).

Endpoint

A specific URL path that performs an action or returns data in the GHL API (e.g., /leads, /contacts).

Authentication

The method used to verify identity and authorize access to GHL resources (OAuth 2.0, API keys, tokens).

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3 Creative Ideas for Integrating the GHL API with Your App

Automated Lead Qualification Flows

Set up a webhook-driven flow that grades new leads in Your App and pushes qualified ones to GHL with enriched data.

Bidirectional Contact Sync

Keep Contacts in sync between Your App and GHL with conflict resolution and field-mapping presets.

Automated Task Orchestration

Create and assign tasks in GHL from Your App events, then pull status updates back into Your app dashboards.

3 Steps to Connect the GHL API with Your App

Step 1: Authenticate and authorize

Register your app in the GHL developer portal, obtain client credentials, and implement OAuth 2.0 flow or API key usage.

Step 2: Map endpoints and data

Choose endpoints, configure webhooks, and define field mappings for leads, contacts, and tasks.

Step 3: Test, deploy, and monitor

Run end-to-end tests, deploy to production, and monitor dashboards for errors and latency.

Frequently Asked Questions

What is the GHL API and why do I need it to connect my app?

The GHL API is the programmatic interface that lets you create, read, update, and delete GHL resources like leads, contacts, and tasks. It enables your app to automate processes and keep data in sync. Start with authentication, then explore endpoints that match your workflow.

Yes. You can integrate without coding by using Zapier’s App Connector and prebuilt templates. For complex flows, light scripting or a serverless function can help transform data before sending it to GHL.

OAuth 2.0 is recommended for user-scoped access. API keys or tokens can be used for server-to-server communication. Rotate credentials regularly and keep them secure.

Core endpoints include /leads, /contacts, /tasks, and /notes. Map your app fields to these endpoints and use webhooks to trigger updates when data changes.

Webhooks push events from GHL to your app in near real-time. You set up webhooks in the GHL developer console and listen for events to drive your app workflows.

Use a sandbox environment or test mode in Zapier or a staging GHL account to validate flows before going live. Simulate failures to ensure retry logic works.

We provide starter templates and example flows in our docs and templates gallery to help you get started quickly.

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Full Endpoint Access
$ 49
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  • All GHL API Endpoints
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Full Endpoint Access
$ 37
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Billed Annually
  • All GHL API Endpoints
  • Premium Support
  • Continuous Updates
  • Unlimited Usage*
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Full Endpoint Access
$ 999
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One-time Fee
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🚀 GoHighLevel Integration

Complete Operations Catalog - 126 Actions & Triggers

126
Total Operations
55
Polling Triggers
71
Actions
14
Categories
👥

Contacts

10 Triggers 18 Actions
Trigger
Get Contact
Retrieve a specific contact by ID
Trigger
Search Contacts
Advanced search with filters
Trigger
Get Contacts by Business
Retrieve contacts linked to a business
Trigger
Get Duplicate Contact
Check for duplicate contacts
Trigger
Get Contact Appointments
List all appointments for a contact
Trigger
Get Contact Tasks
Retrieve all tasks for a contact
Trigger
Get Contact Task by ID
Get specific task details
Trigger
Get Contact Notes
List all notes for a contact
Trigger
Get Contact Note by ID
Retrieve specific note details
Trigger
List Contacts (Deprecated)
Legacy contact listing method
Action
Create Contact
Add a new contact to the system
Action
Update Contact
Modify existing contact information
Action
Find Contact
Search by email, phone, or ID
Action
Delete Contact
Remove a contact permanently
Action
Upsert Contact
Create or update contact automatically
Action
Add Tags to Contact
Tag contacts for organization
Action
Remove Tags from Contact
Remove specific tags
Action
Bulk Update Contact Tags
Add or remove multiple tags at once
Action
Create Contact Task
Add a new task for a contact
Action
Update Contact Task
Modify existing task details
Action
Complete Contact Task
Mark task as complete
Action
Delete Contact Task
Remove a task permanently
Action
Create Contact Note
Add notes to contact records
Action
Update Contact Note
Edit existing notes
Action
Delete Contact Note
Remove notes from contacts
Action
Add Contact to Campaign
Enroll contact in campaign
Action
Remove from Campaign
Remove contact from specific campaign
Action
Remove from All Campaigns
Unenroll from all campaigns
📅

Calendars & Appointments

13 Triggers 21 Actions
Trigger
List Calendar Groups
Get all calendar groups
Trigger
List Calendars
Retrieve all calendars
Trigger
Get Calendar by ID
Get specific calendar details
Trigger
Get Free Slots
Check calendar availability
Trigger
List Calendar Events
Get all scheduled events
Trigger
List Blocked Slots
View unavailable time slots
Trigger
Get Appointment
Retrieve appointment details
Trigger
List Appointment Notes
Get notes for appointments
Trigger
List Calendar Notifications
View notification settings
Trigger
Get Calendar Notification
Get specific notification
Trigger
List Calendar Resources
View rooms and equipment
Trigger
Get Calendar Resource
Get specific resource details
Action
Create Calendar Group
Set up new calendar group
Action
Update Calendar Group
Modify calendar group settings
Action
Update Group Status
Enable or disable calendar group
Action
Delete Calendar Group
Remove calendar group
Action
Validate Group Slug
Check if slug is available
Action
Create Calendar
Add new calendar
Action
Update Calendar
Modify calendar settings
Action
Delete Calendar
Remove calendar permanently
Action
Create Appointment
Book new appointment
Action
Update Appointment
Modify appointment details
Action
Delete Event
Cancel and remove event
Action
Create Block Slot
Block time on calendar
Action
Update Block Slot
Modify blocked time
Action
Create Appointment Note
Add notes to appointments
Action
Update Appointment Note
Edit appointment notes
Action
Delete Appointment Note
Remove appointment notes
Action
Create Calendar Notification
Set up reminders
Action
Update Notification
Modify notification settings
Action
Delete Notification
Remove notification
Action
Create Calendar Resource
Add room or equipment
Action
Update Calendar Resource
Modify resource details
Action
Delete Calendar Resource
Remove resource
💼

Opportunities

3 Triggers 7 Actions
Trigger
Search Opportunities
Find opportunities with filters
Trigger
Get Opportunity
Retrieve specific opportunity
Trigger
List Pipelines
View all opportunity pipelines
Action
Create Opportunity
Add new sales opportunity
Action
Update Opportunity
Modify opportunity details
Action
Delete Opportunity
Remove opportunity
Action
Update Opportunity Status
Change status (open, won, lost)
Action
Upsert Opportunity
Create or update opportunity
Action
Add Followers
Assign team members to follow
Action
Remove Followers
Unassign followers
👤

Users

4 Triggers 3 Actions
Trigger
Search Users
Find users with filters
Trigger
Filter Users by Email
Search users by email address
Trigger
Get User
Retrieve user details
Trigger
List Users by Location
Get users in specific location
Action
Create User
Add new user to system
Action
Update User
Modify user information
Action
Delete User
Remove user from system
💬

Conversations & Messages

8 Triggers 2 Actions
Trigger
Search Conversations
Find conversations by filters
Trigger
Get Conversation
Retrieve conversation details
Trigger
Get Email by ID
Retrieve specific email
Trigger
Get Message by ID
Get specific message details
Trigger
Get Messages by Conversation
List all conversation messages
Trigger
Get Message Recording
Retrieve voice recording
Trigger
Get Message Transcription
Get transcribed message text
Trigger
Download Transcription
Download transcription file
Action
Update Message Status
Change message read/unread status
Action
Agent Typing Indicator
Show typing indicator in chat
🏢

Businesses

2 Triggers 3 Actions
Trigger
Get Business
Retrieve business details
Trigger
List Businesses by Location
Get all businesses in location
Action
Create Business
Add new business
Action
Update Business
Modify business details
Action
Delete Business
Remove business
🔄

Workflows & Campaigns

3 Triggers 5 Actions
Trigger
List Workflows
Get all workflows
Trigger
List Snapshots
View available snapshots
Trigger
List Campaigns
Get all campaigns
Action
Add Contact to Workflow
Enroll in workflow automation
Action
Remove from Workflow
Unenroll from workflow
Action
Add Contact Followers
Assign followers to contact
Action
Remove Contact Followers
Unassign followers
Action
Bulk Business Update
Add/remove contacts from business
⚙️

Other Operations

20 Triggers 8 Actions
Trigger
List Locations
Get all locations
Trigger
List Custom Fields
View custom field definitions
Trigger
Get Company
Retrieve company information
Trigger
Find Associations
Search associations
Trigger
Get Association
Retrieve association details
Trigger
Get Association Key
Get key by name
Trigger
Get Association by Keys
Find by object keys
Trigger
Get Relations by Record
List record relations
Trigger
Check Blog URL Slug
Verify slug availability
Trigger
Get Blog Authors
List blog authors
Trigger
Get Blog Categories
List blog categories
Trigger
Get Blog Posts
List posts by blog
Trigger
Get Blogs by Location
List location blogs
Action
Find Location by ID
Retrieve location details
Action
Create Location
Add new location
Action
Create Association
Link related records
Action
Update Association
Modify association
Action
Delete Association
Remove association
Action
Create Relation
Establish record relation
Action
Delete Relation
Remove record relation
Action
Create Blog Post
Publish new blog post
Action
Update Blog Post
Edit blog post

✨ Key Capabilities

📊 Contact Management

  • 10 custom field slots per contact
  • Advanced search with filters
  • Duplicate detection
  • Tag management (bulk operations)
  • Full task and note management
  • Campaign & workflow enrollment

📅 Calendar Features

  • Calendar groups with slugs
  • Multiple calendar types
  • Free slot checking
  • Appointment booking system
  • Blocked slots management
  • Room & equipment resources

💼 Sales Pipeline

  • Multi-pipeline support
  • Stage management
  • Status tracking (won, lost, etc)
  • Monetary value tracking
  • User assignment
  • Follower management

🔄 Automation Ready

  • Workflow automation support
  • Campaign management
  • Polling triggers (1-15 min)
  • Real-time conversations
  • Bulk operations
  • Upsert capabilities
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