How to Connect Slack to Contacts API with GHL

Slack + Contacts API: automate contact updates, tasks, notes, and more with a GHL integration

Step-by-step guide to linking Contacts API with Slack via the GHL connector

This guide explains how to securely connect GHL’s Contacts API with Slack (GHL) to streamline contact data, tasks, notes, and appointment workflows. Build powerful, no-code automations that keep your team informed in real time.

GHL Authentication for Contacts API

Authenticate using your GHL API credentials to grant Slack access to contact data, tasks, notes, and appointments. Use secure keys or OAuth with the least-privilege scopes needed for your workflow.

Slack App Authentication

Authorize the Slack app to call the GHL Contacts API, ensuring the correct scopes are granted for read and write operations and that tokens are stored securely.

Contacts API Endpoints Overview

The Contacts API exposes endpoints to read, create, update, and delete contacts, tasks, notes, and related resources. The following endpoints are commonly used in Slack-driven workflows.

Top 3 Connections between GHL Contacts API and Slack

Create or Update a GHL Contact from Slack

Trigger: when a Slack message references a contact or a new contact is added in Slack.

Actions: create or update a contact in GHL, attach notes, and schedule tasks.

Methods: POST /contacts/ to create, PUT /contacts/:contactId to update, GET /contacts/:contactId to verify.

Slack user ID, contact email, contact name, and optional notes.

Top 3 Connections between GHL Contacts API and Slack

Update Slack when GHL Contact Changes

Trigger: updates in GHL trigger Slack notifications in real time.

Actions: post a message to a channel, update a Slack contact field if supported, or create a task.

GET /contacts/:contactId; GET /contacts/:contactId/tasks; GET /contacts/:contactId/notes

contactId, Slack channel, data mappings.

Top 3 Connections between GHL Contacts API and Slack

Create Slack Tasks from GHL

Trigger: new or overdue tasks in GHL trigger Slack tasks.

Actions: create Slack tasks or reminders, update statuses.

POST /contacts/:contactId/tasks; PUT /contacts/:contactId/tasks/:taskId

contactId, taskId, dueDate, description

No-code Benefits of Connecting Slack with Contacts API

Zero-code setup lets you configure the integration with a simple UI, no developers required.

Real-time syncing ensures your team always sees up-to-date contact data in Slack.

Centralized workflows automate tasks, notes, and updates from Slack into GHL.

Key Terms and Glossary

This glossary defines core elements and processes used in the Slack-Contacts API integration.

API Endpoint

A defined URL path used to perform a specific function against the GHL Contacts API.

Authentication

The method by which the integration proves identity (API keys or OAuth) to access data securely.

Contact

A person or record stored in GHL’s Contacts database, including names, emails, and phone numbers.

Webhook

A callback URL that the API can call when data changes, enabling real-time updates.

People also Search for:

Creative ideas for Slack + Contacts API integration

Automated welcome message when a new Slack contact is added to GHL

Send a friendly welcome in Slack when a new contact is created in GHL and create an onboarding task in GHL.

Bidirectional updates from GHL to Slack

Push contact status changes to Slack channels and DMs for immediate awareness.

Channel-specific alerts and tagging

Route updates to the right Slack channel based on contact tags; automate alerts.

3 Simple Steps to Connect Slack with Contacts API

Authenticate and Install

Install the Slack app, authorize the GHL integration, and select the Contacts API scopes you need.

Map Data Fields

Map Slack fields to GHL contact data (name, email, notes) to ensure accurate syncing.

Test and Deploy

Run end-to-end tests, verify data flows, and enable production automation.

Frequently Asked Questions

Do I need coding experience to connect Slack to Contacts API?

No coding is required. The Slack app and GHL Contacts API connector provide a guided setup with field mappings and tested templates. You can configure mapping rules via a visual UI and test the flow in a sandbox environment. If you prefer, you can export a sample configuration to reuse elsewhere.

You can sync contact names, emails, phone numbers, notes, and related tasks. The integration supports reading, creating, updating, and associating items like notes and tasks with contacts for a complete picture.

Credentials are stored securely in your account and transmitted over encrypted channels. API keys or OAuth tokens are used with least-privilege scopes to minimize access. Regular rotations and audit logs help maintain security.

Yes. You can designate specific Slack channels or DMs to receive updates. Channel mappings are configurable in the Slack app settings and can be customized per contact or per workflow.

If syncs fail, check the error logs in the app, verify endpoint paths and credentials, and confirm the required scopes are granted. Re-run the test after correcting issues and monitor a short grace period to confirm stability.

Webhooks are supported for real-time updates from GHL to Slack. Ensure the webhook URL is reachable, the correct events are subscribed, and the receiving endpoint handles retries.

Yes. You can use Zapier as a connector by configuring a Zap that calls the GHL Contacts API and posts updates to Slack. This is an option if you prefer a different automation layer.

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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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