How to connect Radius CRM to Contacts API

Contacts API x Radius CRM: a seamless data bridge for practical contact management

Steps to connect Contacts API with Radius CRM

This guide walks you through authenticating, selecting endpoints, and mapping fields to keep contact data in sync between Radius CRM and the Contacts API. You’ll leverage endpoints like GET /contacts/:contactId and POST /contacts/ to read and create records, with triggers and automations to streamline your workflows.

Authentication for Contacts API

Access is secured with OAuth 2.0 tokens. Include the Bearer token in the Authorization header and request the scope: contacts.readonly. Store tokens securely and refresh them before expiry to maintain uninterrupted access.

Radius CRM authentication considerations

Radius CRM uses OAuth 2.0 for app-to-app authentication. Register your Radius CRM app in your developer portal, configure redirect URIs, and implement a reliable token refresh flow to keep connections alive.

Core endpoints for Radius CRM x Contacts API

API Endpoint1: GET /contacts/:contactId — Retrieve a single contact. API Endpoint2: GET /contacts/:contactId/tasks — Retrieve tasks for a contact. API Endpoint3: GET /contacts/:contactId/tasks/:taskId — Retrieve a specific task. API Endpoint4: GET /contacts/:contactId/notes — Retrieve notes for a contact. API Endpoint5: GET /contacts/:contactId/notes/:id — Retrieve a specific note. API Endpoint6: GET /contacts/:contactId/appointments — Retrieve appointments for a contact. API Endpoint7: GET /contacts/ — List contacts. API Endpoint8: GET /contacts/business/:businessId — Retrieve contacts by business. API Endpoint9: contacts.write — Write permission for contacts. API Endpoint10: POST /contacts/ — Create a new contact. API Endpoint11: PUT /contacts/:contactId — Update a contact. API Endpoint12: DELETE /contacts/:contactId — Delete a contact. API Endpoint13: POST /contacts/:contactId/tasks — Create a task for a contact. API Endpoint14: PUT /contacts/:contactId/tasks/:taskId — Update a task. API Endpoint15: PUT /contacts/:contactId/tasks/:taskId/completed — Mark a task as completed. API Endpoint16: DELETE /contacts/:contactId/tasks/:taskId — Delete a task. API Endpoint17: POST /contacts/:contactId/tags — Add a tag to a contact.

Top 3 connection approaches for Contacts API with Radius CRM

1) Read and sync a contact profile

Trigger: When a contact in Radius CRM is created or updated, fetch the latest data from the Contacts API to keep records aligned.

Actions: Create or update the Radius CRM contact using data from GET /contacts/:contactId and PUT /contacts/:contactId to keep the profile current.

Methods/paths: GET /contacts/:contactId; PUT /contacts/:contactId

Key fields: contactId, email, phone

Top 3 connection approaches for Contacts API with Radius CRM

2) Task and note synchronization

Trigger: Creation or update of tasks and notes for a contact in the Contacts API.

Actions: Create/update tasks and notes in Radius CRM using POST /contacts/:contactId/tasks, PUT /contacts/:contactId/tasks/:taskId, and GET /contacts/:contactId/notes.

Methods: POST /contacts/:contactId/tasks; PUT /contacts/:contactId/tasks/:taskId; GET /contacts/:contactId/notes

Key fields: taskId, noteId, status

Top 3 connection approaches for Contacts API with Radius CRM

3) Appointments and reminders alignment

Trigger: New or updated appointments in the Contacts API.

Actions: Create or update appointments in Radius CRM using GET /contacts/:contactId/appointments and related update calls.

Methods: GET /contacts/:contactId/appointments; PUT /contacts/:contactId/appointments/:appointmentId

Key fields: appointmentId, startTime

No-code benefits of the Radius CRM + Contacts API integration

Automate data flow without writing code: synchronize contacts, tasks, notes, and appointments across Radius CRM and the Contacts API.

Reduce manual data entry, prevent duplicates, and maintain consistency in real time.

Leverage built-in triggers and webhooks to automate follow-ups and campaigns.

Key terms and glossary

Key elements include authentication, endpoint usage, data mapping, event triggers, and error handling for a reliable Radius CRM and Contacts API integration.

OAuth 2.0

A standard authorization framework that enables secure access to APIs without exposing user credentials.

API Endpoint

A specific URL and method pair that performs a defined action or returns data from an API.

Scope

A set of permissions granted for an API call (e.g., readonly or write).

Webhook

A real-time notification mechanism that informs your system about events as they happen.

People also Search for:

Creative ideas for Radius CRM + Contacts API

Idea 1: Smart contact onboarding

Automatically create a Radius CRM contact when a new lead is captured, with field mappings that populate core contact data and tags.

Idea 2: Task-driven follow-ups

Generate follow-up tasks in Radius CRM based on events in the Contacts API, keeping sales and support teams aligned.

Idea 3: Appointment-forwarding campaigns

Sync appointments and set reminders in Radius CRM to trigger timely campaigns and client outreach.

3 steps to connect Contacts API with Radius CRM

Step 1: Register your app

Create a new app in the GHL developer portal, then obtain client credentials and set redirect URIs.

Step 2: Set up authentication

Configure OAuth 2.0 flow, obtain access tokens, and implement token refresh logic.

Step 3: Map data fields

Define mappings between Radius CRM fields and Contacts API fields to ensure accurate data sync.

Frequently asked questions

How secure is the connection between Radius CRM and Contacts API?

Yes. The connection is secured with OAuth 2.0 and TLS transport. Tokens should be stored securely and never exposed in client-side code. Use the minimum scope (contacts.readonly) required for your use case and rotate tokens regularly. Implement proper token storage and refresh logic to avoid interruptions.

You can accomplish many tasks with no-code automation, including triggers, actions, and field mappings. For more advanced scenarios, light scripting or custom middleware may be necessary, but a large portion of common flows can be built without code.

For basic sync, you’ll typically use GET /contacts/:contactId to read a contact, PUT /contacts/:contactId to update, and POST /contacts/ to create. Additional endpoints for tasks, notes, and appointments enable richer synchronization as needed.

Yes. You can fetch tasks and notes via GET /contacts/:contactId/tasks, GET /contacts/:contactId/notes, and related endpoints. Use these calls to mirror or enrich Radius CRM records with activity data.

Authentication tokens should be securely stored and refreshed before expiry. Handle token expiry gracefully with automatic retries and fallback paths. Keep refresh tokens confidential and rotate keys regularly.

Yes. You can push updates from Radius CRM to Contacts API using PUT/POST endpoints for contacts, tasks, notes, and appointments. Webhooks can help automate event-driven updates.

API rate limits vary by plan. Check the developer portal for current limits and retry guidelines. Implement exponential backoff and clear error handling to maintain reliability.

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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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