Access the GHL Contacts API using your API key or OAuth credentials. Grant the app the appropriate read-only permissions to protect sensitive data.
Zapier uses OAuth 2.0 or API tokens to securely connect apps; connections are stored securely and tokens can be refreshed as needed.
GET /contacts/:contactId – Retrieve a specific contact GET /contacts/:contactId/tasks – List tasks for a contact GET /contacts/:contactId/tasks/:taskId – Get a single task GET /contacts/:contactId/notes – List notes for a contact GET /contacts/:contactId/notes/:id – Get a specific note GET /contacts/:contactId/appointments – Retrieve appointments GET /contacts/ – List all contacts GET /contacts/business/:businessId – Get business-related contacts POST /contacts/ – Create a contact PUT /contacts/:contactId – Update a contact DELETE /contacts/:contactId – Delete a contact POST /contacts/:contactId/tasks – Create a task for a contact PUT /contacts/:contactId/tasks/:taskId – Update a task PUT /contacts/:contactId/tasks/:taskId/completed – Mark a task as completed DELETE /contacts/:contactId/tasks/:taskId – Delete a task POST /contacts/:contactId/tags – Add a tag to a contact
Trigger: Access a contact in GHL to fetch the contact data and related tasks.
Actions: Retrieve contact details and tasks, then sync to Harvest to create or update records.
GET /contacts/:contactId
contactId
Trigger: When notes are requested for a contact.
Actions: Retrieve notes and push to Harvest notes section.
GET /contacts/:contactId/notes
contactId
Trigger: Create or update a task for a contact in GHL.
Actions: Create or update tasks in Harvest based on the contact’s task in GHL.
POST /contacts/:contactId/tasks
contactId, taskId
No coding required — configure triggers and actions with a few clicks.
Speed and consistency — automate data flow between GHL and Harvest without custom development.
Scalability — easily adjust workflows as needs evolve.
Overview of core elements and processes involved in connecting GHL’s Contacts API to the Harvest workflow via the Zapier App Connector.
The GHL API provides programmatic access to core CRM data and actions; use it to read contacts, notes, tasks, and more.
A specific URL path and method used to perform an operation against the GHL API, such as GET /contacts/:contactId.
A focused GHL API subset that deals with contact records, their tasks, notes, and related metadata.
An authorization framework used to grant access securely without sharing passwords; tokens expire and refresh automatically in Zapier.
Use ready-to-run Zap templates that connect GHL Contacts data to Harvest tasks, notes, and appointments.
Automatically sync enriched contact details into Harvest to improve project scoping.
Guided error-handling templates and alerts when an endpoint fails or data mismatches occur.
Collect your GHL API key, OAuth tokens, and ensure the Zapier app is authorized to access the necessary scopes.
Set up the GHL and Harvest connections in Zapier, map fields, and test triggers.
Run end-to-end tests to confirm data sync and then publish the workflow.
The GHL Contacts API provides programmatic access to contact data, notes, and tasks. When connected through the Zapier App Connector, you can pull this data into Harvest workflows to automate project creation and task management. The integration leverages read permissions to keep your data secure while enabling automation.
No coding is required with the Zapier App Connector. You can configure triggers, actions, and searches using the visual interface. If you need additional logic, you can add filters and formatter steps, but direct API coding is not necessary.
Available endpoints include reading contacts, tasks, notes, and appointments, plus creating or updating contacts and tasks. This page highlights core endpoints like GET /contacts/:contactId and POST /contacts/:contactId/tasks for common workflows.
Security and authentication are important. Use OAuth 2.0 or API keys with scoped permissions, monitor token lifetimes, and handle errors gracefully. Avoid exposing keys in logs and implement proper error handling in Zapier.
Bidirectional sync is possible with careful mapping and triggers in both directions. Ensure deduplication rules, conflict resolution, and timing to prevent data loops between GHL and Harvest.
If a Zap or endpoint isn’t firing, check the connection status, re-authenticate if needed, and run a test. Review Zapier task history and API responses to identify bottlenecks or errors, then retry with adjusted settings.
Official docs and endpoint references are available in the GHL API reference and Zapier app docs. Look for authentication guides, endpoint lists, and example workflows to accelerate setup.
Due to high volume, we will be upgrading our server soon!
Complete Operations Catalog - 126 Actions & Triggers
