Kit MCP for AI Agents. Manage audience data and campaign metrics in conversation.
Kit (ConvertKit) connects your AI agent directly to your email marketing platform. Use this MCP to manage subscribers, track audience tags, and analyze broadcast campaign performance without ever opening a dashboard. Your agent can list all opt-in forms, search for specific user profiles by ID or email, update metadata, and even retrieve high-level summaries of how fast your list is growing.
Give Claude and any AI agent real-world access
Your agent can subscribe a new person to your forms immediately.
Retrieve a high-level summary showing how many subscribers you've added recently.
Get specific profile details and current metadata for any subscriber.
List all existing audience tags or apply a specific tag to a user based on their email address.
Pull performance data like open rates and unique clicks from recent broadcasts.
Ask an AI about this
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What AI agents can do with Kit (ConvertKit) with 10 Tools
These tools let your agent perform core marketing functions like listing tags, adding users, updating profiles, and checking campaign metrics.
Make your AI actually useful.
Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.
Start using Kit (ConvertKit) MCPAdd Subscriber To Form
Subscribes a person to one of your available forms using an email address.
Get Account Growth Summary
Retrieves a quick, high-level summary of how many total subscribers you have.
Get Subscriber Details
Gets detailed profile information and custom field data for a specific subscriber.
List Optin Forms
Lists all the different sign-up forms you have built in your account.
List Email Sequences
Shows a list of automated email sequences or workflows you've set up for users.
List Subscribers
Retrieves a basic list of all the email subscribers in your account.
List All Tags
Displays every single audience tag you have created for segmentation purposes.
Search Subscriber By Id
Finds a subscriber's profile using their unique, numeric account ID number.
Apply Tag To Subscriber
Adds one or more specified tags to a user’s profile via their email address.
Update Subscriber
Changes specific metadata or custom fields for an existing subscriber record.
Security and governance baked right in.
Pick your AI client below to get set up. Just create a Vinkius account, subscribe, and you're instantly up and running. We handle the entire backend infrastructure, delivering out-of-the-box support for HTTPS Streamable, SSE, and OAuth2—zero messy routing required.
Choose How to Get Started
Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.
Build Your Own
Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
- Import from OpenAPI, Swagger, or YAML specs
- Create Agent Skills with progressive disclosure
- Deploy to edge with MCPFusion framework
- Built in DLP, auth, and compliance on each call
- Real time usage dashboard and cost metering
- Publish to catalog or keep private
Make Your AI Do More
Start with Kit (ConvertKit), then connect any of our 5,200+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 5,200+ others, all in one place
- Add new capabilities to your AI anytime you want
- Connections are secured and governed automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog weekly
Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Kit. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.
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The pain of logging into multiple marketing dashboards. Solved with Vinkius AI Gateway
Today, if you want to know the performance of your last email blast, you're stuck. You have to log into Kit, find the specific campaign, navigate through different tabs for open rates, then click another tab to see unique clicks. If you need to segment users who opened but didn't click, you're looking at a minimum of five separate screens and several hours of manual cross-referencing.
With this MCP, all that complexity disappears. You simply ask your agent: 'What was the CTR for my last broadcast?' The data comes back directly in text format. Your AI client handles the dashboard navigation behind the scenes, giving you an immediate answer without a single copy/paste.
Manage audience segmentation with Kit (ConvertKit) MCP
Manually updating user tags is tedious. You might find a new lead who needs to be marked 'Podcast Listener' or 'Ebook Downloaded,' which requires logging in and clicking through settings just to apply a simple marker.
Now, you tell your agent: 'Apply the Podcast Listener tag to john.doe@example.com.' The action happens instantly through the MCP, updating the record and ensuring that user is properly segmented for future campaigns.
What your AI can actually do with this
This MCP lets you manage your entire subscriber lifecycle from within your AI client. Instead of juggling dashboards and exporting spreadsheets to figure out who opened an email or what group a lead belongs to, your agent does the heavy lifting for you. You can ask it to pull open rates and click-through metrics from your most recent broadcast campaign instantly.
Need to clean up your list? Your agent can look up specific users by ID, check their current tags, or even apply new segmentation markers based on a conversation. It also manages all your forms and automated email sequences, making sure every lead gets the right follow-up message automatically. Connecting this MCP via Vinkius means you get instant access to these core marketing functions from any compatible AI client, letting you focus on content strategy instead of data retrieval.
019d757b-c800-739e-9968-63ec6beb89da Here's how it actually works
The bottom line is you treat complex marketing reporting and audience management like a simple chat conversation with your AI agent.
Add the Kit integration to your AI toolset within Vinkius.
Provide your required Kit API Secret (found in Settings > Advanced).
Use natural language commands, like 'What is the open rate for my last newsletter?' to get instant data.
Who is this actually for?
This MCP is for digital creators, marketing managers, and support staff who spend too much time clicking through email dashboards. If checking campaign performance or segmenting leads requires more than three clicks, you need this.
Uses the MCP to track funnel sign-ups and tag audience members from chat transcripts so their follow-up emails are perfectly targeted.
Pulls open rates, click-through metrics, and overall campaign performance instantly to report results without manual data exports.
Checks if a user received necessary onboarding emails or what segments they belong to by just querying their profile details.
What Changes When You Connect
Stop manually checking dashboards. Your agent pulls open rates, click-through numbers, and campaign statuses instantly by reading the API, so you get real performance data without logging into Kit.
Segment users faster than ever. If a lead fills out a form or chats with support, your agent can immediately apply tags to their profile using apply_tag_to_subscriber, keeping your audience clean.
Streamline onboarding. Instead of asking support staff to navigate complex dashboards, they just ask the AI client to check if a user received a welcome email via get_subscriber_details.
Handle list growth proactively. You can get an instant overview using get_account_growth_summary, giving you real-time visibility into your subscriber base size and velocity.
Maintain data accuracy. If a user changes their job title or company, instead of editing it in the dashboard, your agent uses update_subscriber to keep all metadata current.
See it in action
Investigating a poor campaign performance.
A marketing manager wants to know why last week's newsletter underperformed. They ask their agent, and the MCP pulls the open rates and unique clicks from the latest broadcast, allowing them to immediately see if the issue was delivery or engagement.
Cleaning up a lead list after an event.
After a webinar, a digital creator wants to categorize hundreds of new sign-ups. They ask their agent to list all available tags and then instruct it to apply the 'Webinar Attendee' tag to every user who signed up from that specific form.
Checking a high-value customer's status.
A support specialist needs to confirm if a VIP client, John Doe, is opted into all necessary sequences. They ask the agent for get_subscriber_details, which returns his profile and current tags.
Building an automated sign-up flow.
A developer wants to ensure a new user signing up via a custom form is correctly logged. They use the MCP's ability to add_subscriber_to_form and then immediately tag that user with 'New Lead' for follow-up.
The honest tradeoffs
What to watch out for, and the recommended way to handle each one.
Using spreadsheets as a source of truth.
Trying to manually cross-reference data from a CSV file against the actual list, which will inevitably miss updates or fail when tags change.
Use your agent with this MCP. Ask it to search_subscriber_by_id first, then use that data point as the source of truth for all subsequent actions.
Forgetting about sequence status.
Assuming a user is in an email workflow just because they signed up, without verifying if the automated emails are actually running or what their current steps are.
Ask your agent to list_email_sequences first. This shows you exactly which workflows are active and whether the subscriber has passed through them.
Ignoring specific user IDs.
When troubleshooting a single account, trying to find the user only by their name or email address when better tools exist for direct lookup.
The most reliable way is to use search_subscriber_by_id. This guarantees you're looking at the correct record and bypasses potential naming conflicts.
When It Fits, When It Doesn't
Use this MCP if your primary pain point involves managing audience segmentation, tracking campaign performance metrics (open rates, clicks), or ensuring subscriber metadata is accurate. The core strength here is taking complex marketing data—which usually lives behind multiple dashboards—and exposing it via simple commands like 'What was the open rate?'
Don't use this if you need to manage internal CRM records (like billing addresses or support ticket histories) or if your main goal is writing content itself. For pure content generation, a specialized LLM tool is better; for managing structured data outside of email marketing, look toward dedicated database integration MCPs.
This connector excels at the 'who' and 'where' of audience segmentation: who signed up (list subscribers), what they are (tags), and how active they are (metrics).
Questions you might have
How do I check my subscriber count using Kit (ConvertKit) MCP? +
You use the get_account_growth_summary tool. This retrieves a quick, high-level summary of your total current subscribers without needing to list every single person.
Can I tag users with Kit (ConvertKit) MCP? +
Yes, you use the apply_tag_to_subscriber tool. You just need to provide the user's email and the specific tag name you want applied.
What if I only know a subscriber's ID with Kit (ConvertKit) MCP? +
Use search_subscriber_by_id. This tool is designed specifically to look up details when you have the user's numeric ID, which is faster than searching by email.
Does this MCP help with campaign performance metrics for Kit? +
Absolutely. You can ask your agent to pull open rates and click-through metrics from recent broadcasts, giving you the data right in a conversational response.
How do I update a user's metadata using Kit (ConvertKit) MCP? +
You use the update_subscriber tool. This lets you change custom fields or other specific metadata for an existing subscriber record.