Access to the GHL Contacts API is secured with tokens. Use OAuth 2.0 bearer tokens or API keys (as configured in your GHL developer app) to access endpoints with the appropriate scopes (e.g., contacts.readonly for reads and contacts.write for writes).
When you connect via Zapier, you’ll authorize Zapier to access your GHL account. This process uses OAuth 2.0 and stores refreshable tokens so your workflows can run reliably in the background.
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 contacts.write 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
Trigger: a new or updated contact in your source app; Action: create or update the contact in GHL via the Contacts API.
Actions: map core fields (email, first name, last name, phone), optionally set tags and notes, and ensure idempotent updates.
POST /contacts/
key fields: email (required), firstName, lastName
Trigger: condition met in Zapier; Action: add or remove tags on an existing contact in GHL.
Actions: POST /contacts/:contactId/tags with desired tag list.
POST /contacts/:contactId/tags
key fields: contactId, tags
Trigger: task created/updated in Zapier; Action: create or update corresponding task under a contact in GHL.
Actions: POST /contacts/:contactId/tasks; PUT /contacts/:contactId/tasks/:taskId; can mark as completed when needed.
POST /contacts/:contactId/tasks
key fields: contactId, taskName, dueDate, status
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This glossary covers API concepts, authentication, endpoints, and data mapping used when connecting GHL with Zapier.
An API is a set of rules and endpoints that lets two software applications communicate and exchange data.
A URL path in an API that performs a specific function or returns data.
A process to verify identity and grant access to resources, often via tokens or OAuth 2.0.
A standard authorization framework that enables third-party apps to access resources on behalf of a user.
When a new contact is added, Zapier automatically creates a follow-up task in GHL with a due date.
Based on source data, Zapier tags contacts and adds notes in GHL to improve segmentation.
Set a sequence of tasks that guide follow-up with prospects in a single Zap.
In Zapier, select GHL and connect your account, granting access to the Contacts API.
Choose a trigger (e.g., new contact) and map fields to GHL actions (create/update).
Run a test, check data integrity, and enable the Zap in production.
Zapier connects to the GHL Contacts API using OAuth 2.0 tokens. When you authorize, Zapier requests scopes such as contacts.readonly and contacts.write. Use a secure app credential in GHL to manage these scopes. For best results, test each trigger and action in Zapier’s test mode to verify field mappings and error handling.
Essential endpoints include GET /contacts/:contactId for reading a contact and POST /contacts/ to create; PUT /contacts/:contactId to update; POST /contacts/:contactId/tasks to add tasks; POST /contacts/:contactId/tags to assign tags. Also consider GET /contacts/ and GET /contacts/business/:businessId for broader queries.
Yes. You can add or remove tags via POST /contacts/:contactId/tags from Zapier. Ensure the contactId is known and that the tag exists or use a tag creation step prior to tagging.
To create tasks, use POST /contacts/:contactId/tasks with task name and due date. You can then update or mark tasks as completed using PUT /contacts/:contactId/tasks/:taskId/completed.
Writes are supported through the Contacts API when you provide the appropriate OAuth scopes (e.g., contacts.write). In Zapier, ensure your action step uses the ‘Create’ or ‘Update’ operation appropriately to avoid conflicts.
Rate limits depend on your GHL plan and API usage. If you hit limits, implement exponential backoff in your Zapier workflows. Contact your GHL admin or consult the API docs for current quotas.
API endpoints are listed in the Endpoints section of this page (GET, POST, PUT, DELETE, and more). For troubleshooting, verify authentication, base URL, and path parameters; enable testing in Zapier to catch mapping errors early.
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Complete Operations Catalog - 126 Actions & Triggers
