How do I find my MailerLite API token?

Log in to MailerLite, go to **Integrations**, and click **API** to generate a new token. Copy and paste it into the token field below.

Can I add subscribers to specific groups using the AI agent?

Yes. Use the `add_subscriber_to_group` tool with the specific Group ID and Subscriber ID. Your agent will link them instantly and confirm the association.

Is it possible to monitor campaign drafts?

Yes. You can list all campaigns, including those in draft status, using the `list_campaigns` tool. This allows your agent to audit content before it is finalized.

MailerLite MCP Server for Pydantic AI 12 tools — connect in under 2 minutes

Name: MailerLite
Availability: InStock
Author: Vinkius

ai.pydantic.dev/mcp

Built by Vinkius GDPR 12 Tools SDK

Pydantic AI brings type-safe agent development to Python with first-class MCP support. Connect MailerLite through Vinkius and every tool is automatically validated against Pydantic schemas. catch errors at build time, not in production.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerHTTP

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    server = MCPServerHTTP(url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")

    agent = Agent(
        model="openai:gpt-4o",
        mcp_servers=[server],
        system_prompt=(
            "You are an assistant with access to MailerLite "
            "(12 tools)."
        ),
    )

    result = await agent.run(
        "What tools are available in MailerLite?"
    )
    print(result.data)

asyncio.run(main())

Fully ManagedVinkius Servers

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Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About MailerLite MCP Server

Empower your AI agent to orchestrate your entire email marketing ecosystem with MailerLite, the simple yet powerful platform for growing your business. By connecting MailerLite to your agent, you transform complex subscriber management into a natural conversation. Your agent can instantly list active subscribers, create targeted groups, and audit campaign performance without you ever touching a dashboard. Whether you are managing a small newsletter or a large-scale marketing operation, your agent acts as a real-time marketing manager, ensuring your communication is always precise and effective.

Pydantic AI validates every MailerLite tool response against typed schemas, catching data inconsistencies at build time. Connect 12 tools through Vinkius and switch between OpenAI, Anthropic, or Gemini without changing your integration code. full type safety, structured output guarantees, and dependency injection for testable agents.

What you can do

Subscriber Management — List, retrieve, create, and update subscribers using email or ID to keep your list healthy.
Groups & Segments — Organize your audience into targeted groups and segments for highly personalized marketing.
Campaign Insights — List sent and draft campaigns to stay on top of your marketing efforts and audit content.
Form Tracking — Monitor your popups and embedded forms to understand lead generation performance in real-time.
Account Auditing — Quickly retrieve account details and authorized access to maintain organizational control.

The MailerLite MCP Server exposes 12 tools through the Vinkius. Connect it to Pydantic AI in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect MailerLite to Pydantic AI via MCP

Follow these steps to integrate the MailerLite MCP Server with Pydantic AI.

Install Pydantic AI

Run pip install pydantic-ai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save to agent.py and run: python agent.py

Explore tools

The agent discovers 12 tools from MailerLite with type-safe schemas

Why Use Pydantic AI with the MailerLite MCP Server

Pydantic AI provides unique advantages when paired with MailerLite through the Model Context Protocol.

Full type safety: every MCP tool response is validated against Pydantic models, catching data inconsistencies before they reach your application

Model-agnostic architecture. switch between OpenAI, Anthropic, or Gemini without changing your MailerLite integration code

Structured output guarantee: Pydantic AI ensures tool results conform to defined schemas, eliminating runtime type errors

Dependency injection system cleanly separates your MailerLite connection logic from agent behavior for testable, maintainable code

MailerLite + Pydantic AI Use Cases

Practical scenarios where Pydantic AI combined with the MailerLite MCP Server delivers measurable value.

Type-safe data pipelines: query MailerLite with guaranteed response schemas, feeding validated data into downstream processing

API orchestration: chain multiple MailerLite tool calls with Pydantic validation at each step to ensure data integrity end-to-end

Production monitoring: build validated alert agents that query MailerLite and output structured, schema-compliant notifications

Testing and QA: use Pydantic AI's dependency injection to mock MailerLite responses and write comprehensive agent tests

MailerLite MCP Tools for Pydantic AI (12)

These 12 tools become available when you connect MailerLite to Pydantic AI via MCP:

add_subscriber_to_group

Add a subscriber to a group

create_group

Create a new subscriber group

create_subscriber

Mandatory: email is required. Create or update a MailerLite subscriber

delete_subscriber

Delete a MailerLite subscriber

get_me

Get MailerLite account details

get_subscriber

Get details for a specific subscriber

list_campaigns

List MailerLite campaigns

list_forms

Default is popup. List MailerLite forms

list_groups

List all MailerLite groups

list_segments

List all MailerLite segments

list_subscribers

Supports filtering by status (active, unsubscribed, unconfirmed, bounced, junk). List MailerLite subscribers

remove_subscriber_from_group

Remove a subscriber from a group

Example Prompts for MailerLite in Pydantic AI

Ready-to-use prompts you can give your Pydantic AI agent to start working with MailerLite immediately.

"List the last 5 active subscribers in MailerLite."

"Show me all my subscriber groups."

"Check if there are any sent campaigns this week."

Troubleshooting MailerLite MCP Server with Pydantic AI

Common issues when connecting MailerLite to Pydantic AI through the Vinkius, and how to resolve them.

MCPServerHTTP not found

Update: pip install --upgrade pydantic-ai

MailerLite + Pydantic AI FAQ

Common questions about integrating MailerLite MCP Server with Pydantic AI.

How does Pydantic AI discover MCP tools?

Create an MCPServerHTTP instance with the server URL. Pydantic AI connects, discovers all tools, and generates typed Python interfaces automatically.

Does Pydantic AI validate MCP tool responses?

Yes. When you define result types as Pydantic models, every tool response is validated against the schema. Invalid data raises a clear error instead of silently corrupting your pipeline.

Can I switch LLM providers without changing MCP code?

Absolutely. Pydantic AI abstracts the model layer. your MailerLite MCP integration works identically with OpenAI, Anthropic, Google, or any supported provider.