Use OAuth 2.0 with your GHL developer app to obtain access tokens for Contacts API calls. Scope: contacts.readonly. Store tokens securely and refresh as needed.
OneUp uses the same OAuth access token to access GHL endpoints on behalf of the connected user. Ensure tokens are refreshed and stored securely, following best practices.
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 Permissions: 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 is created in OneUp to keep GHL in sync.
Action: Create or update a corresponding contact in GHL using POST /contacts/ or PUT /contacts/:contactId.
Methods: POST /contacts/ to create; PUT /contacts/:contactId to update.
Key fields: email, firstName, lastName, phone, company, contactId
Trigger: Task created or updated in OneUp should create or update a GHL task.
Action: Create/modify tasks on the GHL contact via POST /contacts/:contactId/tasks and PUT /contacts/:contactId/tasks/:taskId.
Methods: POST /contacts/:contactId/tasks; PUT /contacts/:contactId/tasks/:taskId; PUT /contacts/:contactId/tasks/:taskId/completed
Fields: taskId, title, status, dueDate
Trigger: Note or appointment is added in OneUp to reflect in GHL.
Action: Create notes or appointments on the GHL side using POST /contacts/:contactId/notes and POST /contacts/:contactId/appointments.
Methods: POST /contacts/:contactId/notes; POST /contacts/:contactId/appointments
Fields: noteId, note, appointmentId, date
Automate contact onboarding and updates without writing code.
Consolidate notes, tasks, and appointments in a unified workflow in Zapier.
Leverage triggers, filters, and actions to tailor CRM automations.
Key elements include endpoints, triggers, actions, OAuth authentication, data mapping, and error handling used to connect GHL Contacts API with OneUp.
A specific URL path used to request or modify data from the API.
The process of verifying identity (via OAuth 2.0) to access API resources securely.
The standard protocol used to obtain access tokens for API calls with user consent.
A bridge that connects GHL APIs with your app to automate workflows in Zapier.
Set up a workflow that creates a new GHL contact when a lead is added in OneUp, then assign tasks and notes.
Automatically mirror tasks and statuses between OneUp and GHL to keep teams aligned.
Capture client notes in OneUp and push them into GHL as notes for a complete history.
Create a GHL app and obtain OAuth credentials to authorize OneUp.
Authorize OneUp to access Contacts API and validate endpoints in a sandbox environment.
Create Zapier workflows using triggers, actions, and filters to automate data flow between OneUp and GHL.
The GHL Contacts API lets you read and manage contacts, tasks, notes, and appointments. It’s designed for building connectors like OneUp via Zapier. You’ll use OAuth 2.0 to authorize requests and receive tokens that grant access to the scope defined for your app. The endpoints below provide programmatic access to core CRM data. Tip: Start with a sandbox environment to validate mappings before going live.
Authentication is done via OAuth 2.0. Register your OneUp app in your GHL developer portal to obtain a client ID and client secret, then complete the authorization flow to receive an access token. Store tokens securely and refresh as needed. In production, rotate credentials periodically.
Available endpoints cover contacts, tasks, notes, appointments, and basic operations like create, update, and delete. See the Endpoints section for exact paths. Some endpoints require a contactId, while others operate at the collection level (GET /contacts/).
Yes. The API supports writing data, including creating and updating contacts, tasks, and notes. Your app must request the appropriate scopes (such as contacts.write) and use the correct HTTP methods (POST, PUT, DELETE) to modify resources.
Map fields between OneUp and GHL by aligning source fields (email, name, phone) with target API fields (email, firstName, lastName, phone, etc.). Use Zapier to transform data types and ensure required fields are present before calling endpoints.
Rate limits vary by plan. Expect bursts during initial sync and implement exponential backoff in your automation to handle 429 responses gracefully. Logging and retries help maintain reliability.
Documentation is available in the GHL developer portal, plus community forums and our support team. If you run into issues, reach out via the Rankr support channel for guidance.
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Complete Operations Catalog - 126 Actions & Triggers
