ConvertKit

Communication API secret

Manage subscribers, forms, sequences, tags and broadcasts in Kit — formerly ConvertKit — from any Windmill script, flow or app.

Set up in 3 steps

Copy your API secret

In Kit, open Settings from your profile icon, then Advanced, and copy the API Secret — not the API Key next to it.

Add the resource in Windmill

Open Resources, add a resource of type convertkit, and paste it into apiSecret.

Run your first script

Fork any script below and read before writing anything.

Scripts

Building blocks, if none of the projects above fit. Fork one, run it, or call it as a step inside your own flow.

Resource type

convertkit — the shape of the credential every script on this page expects.

View raw schema →

Field	Type	Required	What it is
apiSecret	string	Yes	The API Secret associated to the converkit account

Questions

Secret or key?

The secret. The API key only reaches a handful of public endpoints; everything that reads or changes subscribers needs the secret.

Is this ConvertKit or Kit?

The same product — ConvertKit renamed to Kit. These scripts call its v3 API, which kept the old host.

Is my key stored on the hub?

Never. It lives only in your own Windmill workspace, encrypted at rest.

Set up in 3 steps

Copy your API secret

Add the resource in Windmill

Run your first script

Scripts

Remove Tag From Subscriber By Email

List Custom Fields

Get Purchase By Id

Remove Tag From Subscriber By Id

Update Subscriber

Create Purchase

List Tags

Delete Broadcast

Tag Subscriber

Broadcast Stats

List Forms

List Purchases

List Tags By Email

Delete Webhook

List Subscribers

Add Subscriber To Sequence

Get Subscriber By Email

Custom Fields: Update Field

Add Webhook

Update Broadcast

Custom Fields: Delete Field

Unsubscribe Subscriber

List Form Subscriptions

Get Subscriber By Id

Add Subscriber To Form

List Subscriptions To Sequence

List Subscriptions To Tag

List Tags By Subscriber Id

Create Broadcast

Create Tag

Resource type

Questions