Access to Contacts API is secured via API keys or OAuth tokens. Generate credentials in your GHL account for the Contacts API and store them securely when connecting through Zapier.
Zapier’s connector supports secure authorization via OAuth2 or API keys. Follow the prompts to authorize, test, and save credentials for ongoing automation.
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
Trigger: fetch a contact by ID and pull related tasks and notes into your workflow.
Actions: GET /contacts/:contactId, GET /contacts/:contactId/tasks, GET /contacts/:contactId/notes to enrich CRM data.
GET /contacts/:contactId
Key fields: contactId; include related resources (tasks, notes) as needed.
Trigger: new or updated tasks for a contact.
Actions: POST /contacts/:contactId/tasks, PUT /contacts/:contactId/tasks/:taskId, PUT /contacts/:contactId/tasks/:taskId/completed, DELETE /contacts/:contactId/tasks/:taskId.
POST /contacts/:contactId/tasks
Key fields: contactId, taskId (returned on create), status.
Trigger: adding a tag to a contact or bulk read.
Actions: POST /contacts/:contactId/tags; GET /contacts/ for bulk retrieval.
POST /contacts/:contactId/tags
Key fields: contactId, tag.
Automate repetitive contact management without writing code.
Achieve faster onboarding with real-time data sync across apps.
Maintain data integrity through centralized, visual workflows and built-in error handling.
Understand core concepts like endpoints, authentication, and data fields to design robust automations.
Application Programming Interface: a set of rules that allow software to communicate and share data.
OAuth: an open standard for access tokens, enabling secure authorization without sharing passwords.
A specific URL path through which an API exposes functionality.
A callback mechanism where a server sends data to another service as events occur.
Create a Zap that creates a contact in Contacts API from new leads in your CRM and triggers a welcome task.
Sync updates from GHL Contacts API to your marketing tool and vice versa.
Automatically tag contacts when certain conditions are met during interactions.
In GHL, generate your API key and set up OAuth credentials for the Contacts API, then add them to Zapier.
Use Zapier’s test connector to ensure authentication and a sample request returns expected data.
Build a Zap that triggers on a New Contact and updates tasks, notes, or tags.
Authentication for the GHL Contacts API in Zapier supports API keys and OAuth tokens. Generate credentials in GHL and securely connect them in Zapier to establish authorized access. Ensure the chosen scope matches your needs (for example, contacts.readonly for reading data). Keep credentials secure, rotate keys regularly, and use Zapier’s built-in test and error handling to confirm connectivity before running live automations.
Commonly used endpoints include GET /contacts/:contactId to fetch a contact, GET /contacts/:contactId/tasks to retrieve tasks, and GET /contacts/:contactId/notes for notes. You may also use GET /contacts/ to list all contacts and POST /contacts/ to create new records as part of onboarding.
No prior coding is required for most Zapier-based automations. The connectors let you build powerful workflows using triggers and actions without writing code. Some advanced scenarios may require custom fields or conditional paths, but core tasks can be completed no-code.
Yes. You can update a contact’s tasks with PUT /contacts/:contactId/tasks/:taskId, mark tasks as completed with PUT /contacts/:contactId/tasks/:taskId/completed, modify notes with PUT /contacts/:contactId/notes/:id, and add tags with POST /contacts/:contactId/tags. These actions enable dynamic workflow management from Zapier.
API keys and OAuth tokens are sensitive. Store them securely, rotate credentials periodically, and use encrypted connections. For OAuth, ensure token scopes are restricted to the minimum necessary permissions. Regularly review access permissions and monitor usage.
Rate limits depend on the endpoint and plan. Refer to the GHL API docs for current limits. To avoid hitting limits, implement retry logic with exponential backoff and batch requests where possible.
Leverage Zapier’s built-in error handling features, including conditional paths and retry rules. Use webhooks or tests within Zapier to detect failures early and route failed runs to a backup workflow or alerting system.
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