How to Connect Casebook to the GHL Contacts API

Casebook and the GHL Contacts API: Quick-start integration guide

Steps to connect Casebook with the GHL Contacts API

This guide walks you through authenticating, configuring endpoints, and using core CRUD operations to sync contacts, tasks, notes, and appointments between Casebook and the GHL Contacts API.

Authentication for the GHL Contacts API

Authenticate requests using your GHL credentials and an access token. Use OAuth 2.0 to obtain a Bearer token and attach it to every API call.

Casebook App Authentication

Casebook relies on your GHL access token. Securely store tokens, refresh when needed, and scope requests to the Contacts API (readonly as appropriate).

GHL Contacts API Endpoints

GET /contacts/:contactId; GET /contacts/:contactId/tasks; GET /contacts/:contactId/tasks/:taskId; GET /contacts/:contactId/notes; GET /contacts/:contactId/notes/:id; GET /contacts/:contactId/appointments; GET /contacts/; GET /contacts/business/:businessId; POST /contacts/; PUT /contacts/:contactId; DELETE /contacts/:contactId; POST /contacts/:contactId/tasks; PUT /contacts/:contactId/tasks/:taskId; PUT /contacts/:contactId/tasks/:taskId/completed; DELETE /contacts/:contactId/tasks/:taskId; POST /contacts/:contactId/tags

Top 3 connection patterns between GHL Contacts API and Casebook

Connection 1: Retrieve and Sync a Contact with Tasks

Trigger: When a contact is created or updated in Casebook, pull the latest data with GET /contacts/:contactId to keep both systems in sync.

Actions: Upsert the contact in GHL, create or update tasks via POST /contacts/:contactId/tasks and keep task state in sync.

GET /contacts/:contactId

Key fields: id, name, email, phone, tasks[].id, notes[].id

Top 3 connection patterns between GHL Contacts API and Casebook

Connection 2: Create and Update Contact Tasks

Trigger: When a task is added or updated in Casebook, sync with GHL by POST /contacts/:contactId/tasks or PUT /contacts/:contactId/tasks/:taskId.

Actions: Create tasks, update completion with PUT /contacts/:contactId/tasks/:taskId/completed, and reflect status.

POST /contacts/:contactId/tasks

Key fields: taskId, title, dueDate, status

Top 3 connection patterns between GHL Contacts API and Casebook

Connection 3: Notes and Appointments Synchronization

Trigger: Notes or appointments are created or updated in Casebook, then sync with GHL via notes and appointments endpoints.

Actions: Upsert notes via POST /contacts/:contactId/notes or PUT /contacts/:contactId/notes/:id and create/update appointments via POST /contacts/:contactId/appointments.

GET /contacts/:contactId/notes and GET /contacts/:contactId/appointments

Key fields: noteId, appointmentId, content, date, time, location

No-code benefits for Casebook and GHL Contacts API

Benefit: Build powerful automation flows without coding.

Benefit: Real-time data synchronization across Casebook and GHL for a unified contact history.

Benefit: Centralized contact intelligence with minimal setup and maintenance.

Key Terms and Glossary

Key data elements and processes used in the integration: Contacts, Tasks, Notes, Appointments, and the flow to sync between Casebook and the GHL Contacts API.

Contacts

A person record stored in GHL and Casebook representing an individual contact.

Tasks

Individual actions or work items linked to a contact that can be created, updated, or completed.

Notes

Free-form notes attached to a contact to capture context and history.

Appointments

Scheduled calendar events associated with a contact for meetings or calls.

People also Search for:

3 Creative ideas for integrating GHL Contacts API with Casebook

Idea 1: Auto-create contacts from Casebook into GHL

Automatically push new Casebook contacts into the GHL Contacts database to seed your CRM and begin tracking interactions immediately.

Idea 2: Auto-update contact data and tasks

Keep fields like email, phone, and task progress in sync across Casebook and GHL with minimal manual effort.

Idea 3: Notes and appointments drill-down

Sync notes and appointments to deliver a complete, cross-app contact history for sales and service teams.

3 Steps to Connect GHL Contacts API with Casebook

Step 1: Gather credentials

Collect your GHL OAuth client details, Casebook app credentials, and ensure the required scopes (readonly for viewing, write for updates).

Step 2: Configure endpoints and mappings

Map Casebook data fields to GHL Contacts fields and configure endpoint calls for get, create, update and delete actions.

Step 3: Test, monitor, and optimize

Run tests with sample contacts and tasks; monitor for errors; adjust rate limits, retries, and field mappings as needed.

Frequently Asked Questions

What authentication is required for the GHL Contacts API?

Answer: The GHL Contacts API uses OAuth 2.0 to issue access tokens for requests. Start by creating an OAuth client in your GHL developer console and requesting the appropriate scopes for reading contact data. Then obtain a token and attach it to Authorization: Bearer headers for all calls. For simple tests, you can also use a sandbox/test token if your environment supports it. Next, protect tokens securely, rotate credentials regularly, and follow best practices for secret management to keep your integration safe.

Answer: Begin with reading a contact and their related tasks to validate data flow using GET /contacts/:contactId and GET /contacts/:contactId/tasks. Once stable, add the ability to create or update a contact with POST /contacts/ and PUT /contacts/:contactId. Gradually enable write permissions in a controlled environment and monitor for any conflicts between Casebook and GHL data.

Answer: Yes. You can build this integration without coding by using automation platforms like Zapier or Make (Integromat) to orchestrate the API calls. Use triggers for creates/updates in Casebook and actions that call the GHL endpoints to sync data. Ensure you handle authentication tokens securely within the automation platform. For more complex flows, a lightweight custom script can offer greater control.

Answer: Rate limits are defined by your GHL plan and API usage. Check your GHL developer portal for current quotas and apply exponential backoff and retry logic in your flows. If you anticipate bursts, consider staggering requests or scaling retries to avoid hitting limits.

Answer: Implement error handling that logs the error, retries with backoff, and notifies your team of persistent failures. Use HTTP status codes to guide retries (e.g., 429 for rate limits, 5xx for server errors) and ensure idempotent operations for create/update calls to prevent duplicates.

Answer: Yes, bulk operations are typically supported through batch endpoints or repeated calls in sequence. Depending on the API, you may batch multiple contact records or tasks in a single request, or you may implement batching at the automation layer by grouping items and processing them in chunks to stay within rate limits.

Answer: Field mapping involves aligning Casebook data fields to their GHL equivalents (e.g., Casebook name to GHL contact name, email, phone, task titles, notes content). Use a mapping document and validate one-to-one mappings first, then extend to nested structures like tasks and notes. Maintain data types and formatting (dates, IDs) to prevent sync errors.

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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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