Kit (ConvertKit)
Drive Kit (formerly ConvertKit) — creator-focused email marketing — from any AI agent: subscribers, tags, forms, sequences, broadcasts, custom fields. 14 tools, v4 API with API-key Bearer auth.
7-day free trial · No credit card · EU-hosted
Ask Kit anything
Try a real prompt against Kit (ConvertKit) via AnythingMCP — Claude calls the tools, returns the answer. Press Enter on your own message to install on Cloud.
Install Kit on CloudClaude is AI and can make mistakes. Please double-check responses.
Setup in 2 minutes
- 1Start a free trial on cloud.anythingmcp.com.
- 2Click Kit (ConvertKit) in the connector store. Paste credentials when prompted.
- 3Mint an MCP API key and point your AI client at the generated MCP URL.
Guides for Kit
Step-by-step setup for the most popular AI clients.
Setting up Kit (ConvertKit)
From the connector definition itself: where to find the credentials, what they need to be allowed to do, and which API this adapter talks to.
This connector uses the Kit v4 API (Kit was renamed from ConvertKit in 2024 — the API still works at api.convertkit.com under v4).
Setup:
- Sign in to https://app.kit.com → Advanced Settings → API → Show v4 API key.
- Copy the v4 API key. Set
CONVERTKIT_API_KEY. - (Optional, only for older v3 endpoints not used here): the v3 API uses an
api_secret— not needed for this connector.
Authentication: Authorization: Bearer ${CONVERTKIT_API_KEY}. The adapter handles this via BEARER_TOKEN.
Subscriber model: every email is a 'subscriber'. State machine: active, inactive (manually paused), bounced, complained, cancelled. New subscribers default to active. Adding to a sequence does NOT create an active subscriber automatically — they must be active first.
Tags vs Forms vs Sequences:
- Forms: capture points (signup widgets, landing pages). When a subscriber fills a form, they're added to the form's list AND tagged with any default tags the form applies.
- Tags: free-form labels. The primary segmentation primitive. A subscriber can have unlimited tags.
- Sequences: timed email courses (used to be 'autoresponder courses'). You subscribe a contact to a sequence and they receive its emails on a schedule.
- Broadcasts: one-time emails to a subset (by tags/forms/sequences). The newsletter primitive.
Custom fields are at the account level — define them in the UI, then set values per subscriber via fields object in create/update.
Pagination: cursor-based. List responses include pagination: {has_previous_page, has_next_page, start_cursor, end_cursor, per_page}. Pass after=$end_cursor (or before=$start_cursor) on the next call. Default per_page=500, max 5000 for some endpoints.
Rate limits: 600 requests per minute per API key. On 429, back off — X-RateLimit-Reset header tells you when.
Webhooks out of scope (Kit supports them, configured in UI to point at your hosted endpoint).
Out of scope here: writing automation rules, landing-page builder, commerce / digital products, deliverability headers config.
Your AI is two clicks away from Kit (ConvertKit).
Install the connector, paste your credentials, ask your AI a question. 7-day free trial, no credit card.