Forms are used to collect subscriber information and can be embedded on your website or used as hosted landing pages.

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List forms

Returns a list of all the forms for your account.

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Endpoint

GET /v3/forms

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Parameters

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api_key
string
required
Your account API key
curl https://api.convertkit.com/v3/forms?api_key=<your_public_api_key>

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Add subscriber to a form

Subscribe an email address to one of your forms.

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Endpoint

POST /v3/forms/#{form_id}/subscribe

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Parameters

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api_key
string
required
Your account API key
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form_id
integer
required
The ID for the form you want to add the subscriber to
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email
string
required
Subscriber email address
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first_name
string
Subscriber first name
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fields
object
Object of key/value pairs for custom field(s). The custom field(s) must exist before you can use it here.
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tags
array
Array of tag ids to subscribe to

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Deprecated Parameters

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courses
array
Array of sequence ids to subscribe to. You should add the subscriber to the sequence directly.
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forms
array
Array of form ids to subscribe to. You should add the subscriber to each form individually.
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name
string
Subscriber first name. You should prefer using first_name listed above.
curl -X POST https://api.convertkit.com/v3/forms/<form_id>/subscribe\
     -H "Content-Type: application/json; charset=utf-8"\
     -d '{ 
           "api_key": "<your_public_api_key>",
           "email": "[email protected]"
         }'

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List subscriptions to a form

List subscriptions to a form including subscriber data.

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Endpoint

GET /v3/forms/#{form_id}/subscriptions

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Parameters

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api_secret
string
required
Your API secret key
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form_id
integer
required
The ID for the form you want to list subscribers from
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sort_order
string
Sort order for results (asc or desc). asc to list subscribers added oldest to newest, desc to list subscribers added newest to oldest. Default is asc.
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subscriber_state
string
Filter by subscriber state (active or cancelled). Receive only active subscribers or cancelled subscribers.
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page
string
The page of results being requested. Default value is 1. Each page of results will contain up to 50 subscriptions.
curl https://api.convertkit.com/v3/forms/<form_id>/subscriptions?api_secret=<your_secret_api_key>