How to connect Active Knocker to Calendars API

Calendars API and Active Knocker: a seamless GHL integration.

Connecting Calendars API with Active Knocker

This guide walks you through setting up a no‑code connection between Active Knocker and Calendars API via GHL, including authentication, endpoints, and practical workflow examples.

Authentication for Calendars API

To access Calendars API from Active Knocker, generate an API key in your GHL developer portal and grant the calendars.write scope. Use OAuth tokens where required and keep credentials secure.

Authentication for Active Knocker

Authorize Active Knocker to act on your GHL calendars using OAuth 2.0. When prompted, grant the necessary scopes and store credentials in a secure vault.

GHL Calendars API Endpoints Overview

Key endpoints include: POST /calendars/, PUT /calendars/:calendarId, DELETE /calendars/:calendarId, calendars.readonly, GET /calendars/, GET /calendars/:calendarId, GET /calendars/:calendarId/free-slots, calendars.groups.readonly, GET /calendars/groups, calendars/groups.write, POST /calendars/groups, POST /calendars/groups/validate-slug, DELETE /calendars/groups/:groupId, PUT /calendars/groups/:groupId, PUT /calendars/groups/:groupId/status, calendars/resources.readonly, GET /calendars/resources/:resourceType

Top 3 integration patterns between Calendars API and Active Knocker

Create a calendar event from a lead booking

Trigger: New lead booked via Active Knocker.

Actions: POST /calendars/ to create an event; optionally POST /calendars/groups to organize; PUT /calendars/:calendarId to update if needed.

POST /calendars/

calendarName, startTime, endTime, attendees, description

Top 3 integration patterns between Calendars API and Active Knocker

Sync available slots to prevent double bookings

Trigger: Availability updated in Active Knocker.

Actions: GET /calendars/:calendarId/free-slots to fetch availability; POST/PUT to create or adjust bookings as needed.

GET /calendars/:calendarId/free-slots

calendarId, userId, date, time, duration

Top 3 integration patterns between Calendars API and Active Knocker

Group calendars for team workflows

Trigger: Group calendar updated in GHL.

Actions: POST /calendars/groups to create; PUT /calendars/groups/:groupId to update; DELETE /calendars/groups/:groupId to remove.

POST /calendars/groups

groupName, groupId, permissions

No‑code benefits of Calendars API + Active Knocker

Fast automation: configure workflows without writing code.

Real‑time synchronization of events and availability across apps.

Centralized calendar management embedded in your existing workflow.

Glossary and Key Terms for Calendars API and Active Knocker

Key elements include endpoints, triggers, actions, and field mappings. Processes: authenticate, configure endpoints, test, deploy, and monitor performance.

API

Application Programming Interface that allows Active Knocker to interact with GHL Calendars data.

OAuth 2.0

Standard authorization framework used to grant tokens and secure access to GHL data.

Endpoint

A specific URL path and HTTP method used to perform an action on the GHL Calendars API.

Calendar

A scheduling block representing events, availability, and bookings in GHL.

People also Search for:

Creative ideas for Calendars API + Active Knocker

Automatic appointment confirmations and reminders

When a lead books, automatically create a calendar event and trigger reminder notifications to attendees.

Auto‑follow ups and rescheduling

If a booking is changed, update the calendar event and notify participants automatically.

Unified calendar dashboard

Consolidate multiple calendars into a single Active Knocker view for team coordination.

3 steps to connect Calendars API with Active Knocker

Step 1: Create API credentials

In GHL, generate an API key with calendars.write scope and store securely in Active Knocker.

Step 2: Configure endpoints and mappings

Define the endpoints you will use (for example POST /calendars/) and map fields between Active Knocker and GHL.

Step 3: Test and deploy

Run end-to-end tests for create, read, update, delete flows and monitor for errors before going live.

Frequently Asked Questions

What is the Calendars API?

The Calendars API exposes a set of endpoints that let you create, read, update, and delete calendars, as well as manage groups and resources. It enables you to access calendar data from GHL in a structured, programmatic way. In the Active Knocker context, this means you can automate scheduling and availability workflows without writing code. You can trigger actions from Active Knocker based on lead events and translate those into calendar updates via the API endpoints.

No traditional coding is required thanks to the no‑code capabilities of the integration. You will typically use API keys and OAuth tokens for secure access, then wire up triggers and actions in Active Knocker to call the Calendars API endpoints. Advanced users can extend workflows with custom fields if needed.

Essential scheduling endpoints include POST /calendars/ to create calendars, GET /calendars/ to list calendars, GET /calendars/:calendarId/free-slots to fetch availability, and POST /calendars/groups to organize calendars by group. You may also use PUT and DELETE on specific calendars to update or remove entries.

Authentication is handled via API keys or OAuth tokens. Protect credentials, rotate keys regularly, and apply the principle of least privilege by granting only calendars.write scope where appropriate. Secure storage and encrypted transmission are recommended practices.

Yes. The free-slots endpoint returns available times, enabling real-time scheduling. If a slot is taken, subsequent calls will reflect updated availability, reducing conflicts. Consider caching strategies for performance without sacrificing accuracy.

Field mapping involves aligning Active Knocker fields (like lead name, date, time, attendees) with the corresponding GHL calendar fields. Use consistent data formats (ISO timestamps, email addresses) and validate inputs to ensure clean, reliable automation.

Rate limits depend on the GHL plan and endpoint. Plan for retries with exponential backoff, implement idempotent actions where possible, and monitor usage to avoid hitting limits. If you anticipate high volume, contact support to discuss higher quotas.

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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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