Authenticate requests to the Contacts API using your API key or OAuth token per your setup. Keep credentials secure and rotate them regularly.
In Ninja Forms, enter your API credentials in the GHL integration area and apply the required contacts.readonly or full access scopes.
Available endpoints: GET /contacts/:contactId Retrieve a single contact; GET /contacts/:contactId/tasks List tasks for a contact; GET /contacts/:contactId/tasks/:taskId Get a specific task; GET /contacts/:contactId/notes List notes for a contact; GET /contacts/:contactId/notes/:id Get a note; GET /contacts/:contactId/appointments Retrieve a contact’s appointments; GET /contacts/ List contacts; GET /contacts/business/:businessId List contacts for a business; 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: A Ninja Forms submission creates or updates a contact in Contacts API.
Actions: POST /contacts/ to create; PUT /contacts/:contactId to update; optionally attach notes or tasks to the contact.
POST /contacts/ and PUT /contacts/:contactId
email, firstName, lastName, phone, company
Trigger: a user opens a form with prefill enabled and a matching contact exists in Contacts API.
Actions: GET /contacts/:contactId to fetch data and prefill fields such as name email and phone.
GET /contacts/:contactId
contactId and email
Trigger: a form submission requires follow-up tasks or notes in GHL.
Actions: POST /contacts/:contactId/tasks to create a task; POST /contacts/:contactId/notes to add notes; optionally update the contact.
POST /contacts/:contactId/tasks and POST /contacts/:contactId/notes
contactId, taskTitle, noteContent
Automate CRM data flow: new form submissions automatically create or update contacts without manual data entry.
Pre-fill forms to speed up user experience and reduce errors by fetching existing CRM data.
Track tasks notes and appointments from form activity for better follow-up.
A quick glossary of data elements and processes used to connect Ninja Forms with the Contacts API in GHL.
A person in your CRM with basic details like name email phone and company.
A specific URL path in the API that performs a defined action such as retrieving a contact.
An authorization protocol to grant access without sharing passwords often via tokens.
A call-back URL that notifies your system when an event occurs in GHL or Ninja Forms.
Capture form submissions and create new contacts in Contacts API, then trigger a welcome email in your marketing stack.
Before the user completes the form, pull existing contact data from CRM to prefill fields.
Create tasks in GHL when form responses indicate follow-up is needed.
Obtain your API credentials API key or OAuth client and set the scopes needed for contacts.readonly or full access.
Enter the API endpoint URL attach credentials securely and map form fields to Contacts API fields.
Run test submissions verify data sync and monitor for errors.
Coding skills are not strictly required. The no code integration path lets you connect Ninja Forms to the Contacts API using settings and field mappings. If you are comfortable with basic form configuration you can set up the integration quickly. For custom logic you may add simple server side hooks or automation rules. The key is to map form fields to the correct Contacts API fields and choose the right endpoint for create or update actions.
A basic sync typically uses the create contact endpoint POST /contacts/ and the update endpoint PUT /contacts/:contactId. You can start with GET /contacts/:contactId for prefill and reading data. As you mature the workflow you can add additional endpoints for tasks notes and tags to enrich the contact data.
Authentication should be handled securely using API keys or OAuth tokens. Do not embed credentials in client side code. Use secure storage and rotate credentials on a schedule. Limit scopes to the minimum needed for your workflow and monitor access logs for unusual activity.
Yes. You can prefill fields by fetching data with GET /contacts/:contactId. When a matching contact exists you can show their name email and other fields in the form. This reduces friction and helps ensure data consistency across systems.
Response times are typically fast but depend on your API plan and network. Plan for occasional latency and implement retry logic where appropriate. Use idempotent requests for updates to avoid duplicate records.
To update a contact from a form submit use PUT /contacts/:contactId with the latest field values. You can also update related data such as notes or tasks in the same workflow to keep the CRM in sync.
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Complete Operations Catalog - 126 Actions & Triggers
