Kit API Documentation

This is the complete API documentation for connecting to the Kit API using MindCloud's Universal API. If you are new to MindCloud, start with the Introduction to see how one API can sit in front of many different apps.

MindCloud is an integration company that offers one normalized API to access 3,100+ apps from a single place. It cleans up provider-specific quirks, keeps requests and responses consistent, and centralizes authentication so you do not need to manage separate flows for every app. Browse other apps.

Meet Kit: Kit, formerly ConvertKit, is an email marketing platform for creators to manage subscribers, tags, forms, sequences, broadcasts, and audience growth automation. Keep reading to get started.

Quickstart

Before you run your first Kit request, you need three things:

1. A MindCloud account — sign in or create an account at MindCloud.
2. A MindCloud API Key — create one in API Keys. Keep it on your server.
3. At least one Kit connection — create or choose one in Connections. Note its connectionId.

Every Kit action uses the same URL pattern:

https://connect.mindcloud.co/v1/universal/kit/latest/actions/{actionSlug}

You need a MindCloud API Key and a Kit connection. Then call an action such as Get Broadcast:

curl --request GET \
  --url "https://connect.mindcloud.co/v1/universal/kit/latest/actions/get-broadcast" \
  --header "Authorization: Bearer $MINDCLOUD_API_KEY" \
  --get \
  --data-urlencode "connectionId=$CONNECTION_ID"

Every response comes back in the same envelope, with your rows in a data array:

{
  "success": true,
  "data": [
    { "id": "1042", "name": "Ava" }
  ],
  "meta": {}
}

After your first request works, use Shape your requests to control arguments, pagination, filtering, fields, and errors.

Authentication

Authentication has two layers. Your MindCloud API Key authenticates the request to MindCloud, sent as a Bearer token in the Authorization header. The connectionId selects the connected Kit account that should run the action. MindCloud stores and refreshes the Kit credentials behind that connection, so you never send provider tokens with your requests.

Pass connectionId in the query string for GET and DELETE actions, and in the JSON body for POST, PUT, and PATCH actions. Keep your MindCloud API Key on your server; do not ship it in browser code, mobile apps, public repositories, or logs.

Kit actions

All 24 published actions for this Kit version. Each page documents the endpoint, arguments, and response controls.

• POSTAdd Subscriber to Form
• POSTAdd Subscriber to Sequence
• PUTAdd Tag to Subscriber
• POSTCreate Broadcast
• POSTCreate Custom Field
• POSTCreate Subscriber
• POSTCreate Tag
• GETGet Broadcast
• GETGet Current Account
• GETGet Subscriber
• GETList Broadcasts
• GETList Custom Fields
• GETList Form Subscribers
• GETList Forms
• GETList Segments
• GETList Sequence Subscribers
• GETList Sequences
• GETList Subscribers
• GETList Tags
• GETList Tags for Subscriber
• DELETERemove Tag From Subscriber
• PUTUnsubscribe Subscriber
• PUTUpdate Broadcast
• PUTUpdate Subscriber

Related apps

More Marketing apps on the Universal API, behind the same REST shape. Or browse all apps.

Google FormsMailchimpCalendlyWebflowGoogle AdsActiveCampaignBrevoMailerLite