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Why use Kit (ConvertKit) MCP Server with Mastra AI?

Bring Newsletter
to Mastra AI

Create your Vinkius account to connect Kit (ConvertKit) to Mastra AI and start using all 10 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.

MCP Inspector GDPR Free for Subscribers
Add Subscriber To FormApply Tag To SubscriberGet Account Growth SummaryGet Subscriber DetailsList All TagsList Email SequencesList Optin FormsList SubscribersSearch Subscriber By IdUpdate Subscriber
ChatGPT Claude Perplexity

Compatible with every major AI agent and IDE

ClaudeClaude
ChatGPTChatGPT
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GeminiGemini
WindsurfWindsurf
VS CodeVS Code
JetBrainsJetBrains
VercelVercel
+ other MCP clients
Kit (ConvertKit)

What is the Kit (ConvertKit) MCP Server?

Integrate your AI assistant with Kit (formerly ConvertKit), the email marketing platform for creators.

What you can do

  • Subscriber Management — Retrieve subscriber profiles, add emails to lists, and check engagement metrics.
  • Tag Organization — List audience tags or apply specific markers to user segments.
  • Broadcast Monitoring — Check open rates, click-through metrics, and campaign statuses.

How it works

  1. Add the Kit integration to your AI toolset.
  2. Provide your Kit API Secret (found in Settings > Advanced).
  3. Manage your email audiences via natural language commands.

Who is this for?

  • Digital Creators — Track funnel sign-ups and tag audience members from chat.
  • Marketing Managers — Pull open rates and campaign performance instantly.
  • Customer Support — Check if a user received an onboarding email without accessing the dashboard.

Built-in capabilities (10)

add_subscriber_to_form

Subscribe a person to a form

apply_tag_to_subscriber

Apply a tag to a subscriber by email

get_account_growth_summary

Retrieve a high-level summary of your subscriber count

get_subscriber_details

Get details for a specific subscriber

list_all_tags

List all audience tags

list_email_sequences

List automated email sequences

list_optin_forms

List all opt-in forms

list_subscribers

List your email subscribers

search_subscriber_by_id

Retrieve a subscriber by their numeric ID

update_subscriber

Update subscriber metadata or custom fields

Why Mastra AI?

Mastra's agent abstraction provides a clean separation between LLM logic and Kit (ConvertKit) tool infrastructure. Connect 10 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.

  • Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add Kit (ConvertKit) without touching business code

  • Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation

  • TypeScript-native: full type inference for every Kit (ConvertKit) tool response with IDE autocomplete and compile-time checks

  • One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure

M
See it in action

Kit (ConvertKit) in Mastra AI

AI AgentVinkius
High Security·Kill Switch·Plug and Play
Enterprise Security

Why run Kit (ConvertKit) with Vinkius?

The Kit (ConvertKit) connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 10 tools are ready to work instantly without any complex setup.

You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.

Kit (ConvertKit)
Fully ManagedNo server setup
Plug & PlayNo coding needed
SecurePrivacy protected
PrivateYour data is safe
Cost ControlBudget limits
Control1-click disconnect
Auto-UpdatesMaintenance free
High SpeedOptimized for AI
Reliable99.9% uptime
Your credentials and connection tokens are fully encrypted

* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure

01 / Catalog

Over 4,000 integrations ready for AI agents

Explore a vast library of pre-built integrations, optimized and ready to deploy.

02 / Credentials

Connect securely in under 30 seconds

Generate tokens to authenticate and link external services in a single step.

03 / Guardian

Complete visibility into every agent action

Audit live requests, latency, success rates, and active security compliance policies.

04 / FinOps

Optimize spending and track token ROI

Analyze real-time token consumption and cost metrics detailed by connection.

Over 4,000 integrations ready for AI agents
Connect securely in under 30 seconds
Complete visibility into every agent action
Optimize spending and track token ROI

Explore our live AI Agents Analytics dashboard to see it all working

This dashboard is included when you connect Kit (ConvertKit) using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.

Why Vinkius

Kit (ConvertKit) and 4,000+ other AI tools. No hosting, no code, ready to use.

Professionals who connect Kit (ConvertKit) to Mastra AI through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.

4,000+MCP Integrations
<40msResponse time
100%Fully managed
Raw MCP
Vinkius
Ready-to-use MCPsFind and configure each manually4,000+ MCPs ready to use
Connection SetupManual coding & server setup1-click instant connection
Server HostingYou host it yourself (needs 24/7 uptime)100% hosted & managed by Vinkius
Security & PrivacyStored in plaintext config filesBank-grade encrypted vault
Activity VisibilityBlind execution (no logs or tracking)Live dashboard with real-time logs
Cost ControlRunaway AI token spend riskAutomatic budget limits
Revoking AccessMust delete files or code to stop1-click disconnect button
The Vinkius Advantage

How Vinkius secures Kit (ConvertKit) for Mastra AI

Every request between Mastra AI and Kit (ConvertKit) is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.

< 40msCold start
Ed25519Signed audit chain
60%Token savings
FAQ

Frequently asked questions

01

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.

02

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.

03

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.

04

How does Mastra AI connect to MCP servers?

Create an MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.

05

Can Mastra agents use tools from multiple servers?

Yes. Pass multiple MCP clients to the agent constructor. Mastra merges all tool schemas and the agent can call any tool from any server.

06

Does Mastra support workflow orchestration?

Yes. Mastra has a built-in workflow engine that lets you chain MCP tool calls with branching logic, error handling, and parallel execution.

07

createMCPClient not exported

Install: npm install @mastra/mcp

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