Kit (ConvertKit) MCP. Manage subscribers and tags with natural conversation.
Gemini Works with every AI agent you already use
…and any MCP-compatible client
Just plug in your AI agents and start using Vinkius.
Kit (ConvertKit) MCP Server manages your email marketing operations. Use your AI agent to read subscriber profiles, apply tags, list forms, and check campaign metrics directly.
It lets you manage entire email audiences and monitor broadcast performance without opening the Kit dashboard.
What your AI agents can do
Add subscriber to form
Subscribes a new person to a specified form.
Apply tag to subscriber
Applies a specific tag to a subscriber based on their email address.
Get account growth summary
Retrieves a high-level summary of your total subscriber count and growth.
Retrieve a user's profile and current tags using get_subscriber_details or search_subscriber_by_id.
Apply tags to subscribers or update their metadata fields directly using apply_tag_to_subscriber or update_subscriber.
See all available tags, opt-in forms, and email sequences using list_all_tags, list_optin_forms, and list_email_sequences.
Subscribe a new person to a specific form using add_subscriber_to_form.
Get a high-level count and summary of your total subscriber count via get_account_growth_summary.
Ask AI about this MCP
Supported MCP Clients
Gemini Waiting for input…
019d757badd subscriber to form
Subscribes a new person to a specified form.
019d757bapply tag to subscriber
Applies a specific tag to a subscriber based on their email address.
019d757bget account growth summary
Retrieves a high-level summary of your total subscriber count and growth.
019d757bget subscriber details
Gets detailed information for a single subscriber.
019d757blist all tags
Lists every available audience tag in your account.
019d757blist email sequences
Lists all automated email sequences you have set up.
019d757blist optin forms
Lists every opt-in form available on your account.
019d757blist subscribers
Lists all of your current email subscribers.
019d757bsearch subscriber by id
Retrieves a subscriber's details using their unique numeric ID.
019d757bupdate subscriber
Updates a subscriber's metadata or custom fields.
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 every 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 4,700+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 4,700+ others, all in one place
- Add new capabilities to your AI anytime you want
- Every connection is secured and compliant automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog every week
What you can do with this MCP connector
Manages your email marketing ops through your AI agent. You can read subscriber profiles, apply tags, list forms, and check campaign metrics directly. This lets you handle your entire audience and monitor broadcast performance without opening the Kit dashboard.
Getting Subscriber Data
You can pull a full list of all your current email subscribers using list_subscribers. To check a specific person's profile or their current tags, use get_subscriber_details or search_subscriber_by_id with their unique ID. You can also update a subscriber's metadata or custom fields using update_subscriber.
Segmenting and Tagging
To organize your audience, you can apply a specific tag to a subscriber based on their email using apply_tag_to_subscriber. You'll see every tag you've got available by running list_all_tags. You can also see every opt-in form you've built with list_optin_forms, and you'll always know which automated email sequences are running by listing them with list_email_sequences.
Onboarding Leads
When a new lead signs up, you can subscribe them to a specific form using add_subscriber_to_form.
Reviewing Audience Size
You can get a high-level summary of your total subscriber count and growth by running get_account_growth_summary.
How Kit (ConvertKit) MCP Works
- 1 Add the Kit integration to your AI toolset and provide your Kit API Secret (found in Settings > Advanced).
- 2 Ask your AI client to perform a marketing action (e.g., 'Find all users who downloaded the ebook').
- 3 The agent executes the necessary tools (
list_all_tags,list_subscribers, etc.) and provides the resulting data to you.
The bottom line is, your AI agent runs the API calls for you, letting you manage complex email marketing tasks with conversation.
Who Is Kit (ConvertKit) MCP For?
This is for digital creators, marketing managers, and customer support staff who spend too much time switching between the email platform, analytics dashboard, and CRM. If you need to react to subscriber behavior immediately, this saves you hours of manual clicking.
Pulls open rates and campaign performance instantly. They use tools like list_email_sequences and list_all_tags to justify budget changes.
Tracks funnel sign-ups and tags audience members from chat or other sources, keeping their audience segmented for targeted content.
Checks if a user received a specific onboarding email or if they are subscribed to a list using get_subscriber_details without needing dashboard access.
What Changes When You Connect
- Check a user's profile and tags instantly. Instead of digging through the dashboard to find a user's history, use
get_subscriber_detailsto pull all their data right from your agent. - Target audiences precisely. Use
list_all_tagsto see every tag you have, and then useapply_tag_to_subscriberto segment users based on recent actions. - Monitor campaign performance without logging in. You can check open rates and click-through metrics for recent sends by listing email sequences or running targeted queries.
- Handle new sign-ups instantly. When a lead converts, use
add_subscriber_to_formto get them into the right list without manual work. - Keep track of growth. Get a quick, high-level view of your total audience size using
get_account_growth_summarybefore starting a campaign.
Real-World Use Cases
Need to find out why a user isn't opening emails.
A user asks: 'Check John Doe's profile.' Your agent runs get_subscriber_details and returns their full profile, including their current tags. You can then check the tags to see if they belong to an inactive segment, solving the mystery instantly.
Need to segment users for a new product launch.
The marketing manager needs to target only 'Webinar Attendees' who signed up last month. They ask the agent to list tags, run list_all_tags, and then use the resulting tags to filter the list of subscribers, ensuring the campaign hits the right people.
Need to clean up stale or incorrect subscriber data.
A support agent discovers a user's custom field is outdated. They use search_subscriber_by_id to get the user's ID, and then run update_subscriber to fix the metadata. The data is clean, and the user gets the right sequence.
Need to launch a campaign based on current growth.
A creator needs to know how many subs they have before setting a goal. They ask the agent to run get_account_growth_summary. The result gives them the current count, letting them plan the next steps for their newsletter.
The Tradeoffs
Trying to list all data in one go
Asking the agent, 'Give me everything about my subscribers and campaigns.' This is too vague. It forces the agent to guess which tools to use, leading to incomplete or irrelevant data dumps.
→
Be specific. Instead, ask: 'List all tags and then tell me the details for the subscriber with ID 123.' This forces the agent to run list_all_tags and then get_subscriber_details sequentially.
Updating a user without checking their status
Just telling the agent, 'Update this user.' This is useless. The agent needs to know what to update and why to make the change meaningful.
→
First, get the details: 'Get subscriber details for john@example.com.' Then, if the profile is missing a tag, run apply_tag_to_subscriber before running update_subscriber.
Assuming tags automatically apply
Saying, 'Make sure these people get the VIP tag.' The agent can't just guess the email. It needs the email or ID. If you don't specify the target, the tool fails.
→
When It Fits, When It Doesn't
Use this if your workflow requires reading, writing, and cross-referencing subscriber data. You need to check a user's tags (via list_all_tags) and then update their profile or send them to a specific sequence. If your goal is only to see a list of subscribers, just use list_subscribers. If you only need to check campaign stats, you don't need this server—you just need a reporting API. This server is for operational changes: adding people, changing tags, or fixing profiles.
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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Works with Claude, ChatGPT, Cursor, and more
The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.
This server provides 10 capabilities that interface natively with Claude, ChatGPT, Cursor, and any MCP client. No middleware. No custom integration required.
Available Capabilities
Manually updating subscriber data is a nightmare of tabs and clicks.
Today, if you need to tag a user or check their recent activity, you jump into the Kit dashboard. You find the user, click on their profile, navigate to the tags section, and then manually apply the correct marker. If you need to check their open rate, you leave the user and jump to the Analytics tab, copy the date range, and cross-reference it—it takes at least five minutes of clicking.
With this MCP server, you tell your agent exactly what you need. You ask it to 'Check the profile and tag for Acme Corp.' The agent runs the necessary tools (`get_subscriber_details` and `apply_tag_to_subscriber`) and delivers the status and the result in a single, immediate response. No clicking required.
Kit (ConvertKit) MCP Server: Manage Subscribers & Tags
You don't have to jump between the list of forms, the list of tags, and the list of subscribers to figure out where a lead went wrong. You can list all forms (`list_optin_forms`) and check the current tags (`list_all_tags`) in the same conversation, then use `add_subscriber_to_form` to fix the whole flow.
The difference is that your agent handles the entire flow. You define the goal, and it executes the precise steps—from listing forms to adding subscribers—without you ever leaving your chat window.
Common Questions About Kit (ConvertKit) MCP
How do I use the `apply_tag_to_subscriber` tool? +
You must provide the subscriber's email and the exact tag name. For example: 'Apply the 'VIP' tag to john@example.com.' The agent runs the tool and confirms if the tag was added.
Can I check a subscriber's full profile using `get_subscriber_details`? +
Yes, get_subscriber_details pulls all known metadata, including their activity history and custom field values, giving you a complete view of the user.
What is the best way to find out how many people I have? +
Use get_account_growth_summary. This tool provides a quick, high-level count of your total subscribers, which is faster than listing every single person with list_subscribers.
How do I make sure a new lead is added correctly? +
Use add_subscriber_to_form and specify the exact form ID or name. This ensures the lead is added to the correct list and funnel immediately.
What tools can I use to list all the audience tags using `list_all_tags`? +
You use the list_all_tags tool to see every tag available in your account. This is useful for seeing what segmentation options you already have, like 'Webinar Attendee' or 'VIP Customer'.
How can I check the status of my automated emails using `list_email_sequences`? +
The list_email_sequences tool shows you a list of all automated email sequences. It lets you verify if a sequence is active, paused, or needs updating.
What information does `update_subscriber` handle for a user? +
update_subscriber lets you change a user's metadata or custom fields. You can use this to correct old data or add specific information that isn't covered in their basic profile.
If I need to find a subscriber by their numeric ID, should I use `search_subscriber_by_id`? +
Yes, search_subscriber_by_id retrieves a subscriber using only their unique numeric ID. This is faster than searching by email if you have the ID readily available.
How do I find my Kit API Secret? +
Log in to Kit, go to Settings > Advanced. Under 'API', click Show next to API Secret, copy the string, and paste it below.
Why is the API Secret required instead of the standard API Key? +
The API Key only provides read access to public forms. The API Secret grants full access to manage subscribers, tags, and broadcast data as needed by this integration.
Can the agent send broadcast emails? +
No. For safety, the integration is read/manage only. The agent can check campaign metrics and manage tags, but actual email sending must be done via the Kit dashboard.
Use it with your favorite AI tools
Connect this server to Cursor, Claude, VS Code, and more.
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