Where do I find my Plunk Secret Key?

Log in to your [**Plunk Dashboard**](https://app.useplunk.com/), navigate to project settings, and you will find your Secret Key under the API section. It typically starts with `sk_`.

Can I send bulk newsletters with this agent?

This integration is optimized for transactional emails and event tracking. For large-scale bulk newsletters, we recommend using the Plunk dashboard or their specialized campaign endpoints for maximum deliverability and compliance.

Plunk Email Marketing MCP Server for Pydantic AI 8 tools — connect in under 2 minutes

Name: Plunk Email Marketing
Availability: InStock
Author: Vinkius

ai.pydantic.dev/mcp

Built by Vinkius GDPR 8 Tools SDK

Pydantic AI brings type-safe agent development to Python with first-class MCP support. Connect Plunk Email Marketing 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 Plunk Email Marketing "
            "(8 tools)."
        ),
    )

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

asyncio.run(main())

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

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 Plunk Email Marketing MCP Server

Connect your AI agent to Plunk, the versatile email marketing platform designed for developers. This integration allows you to manage your audience, send transactional messages, and track user behavioral events directly through natural conversation.

Pydantic AI validates every Plunk Email Marketing tool response against typed schemas, catching data inconsistencies at build time. Connect 8 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

Audience Management — List, create, and update contacts in your Plunk database, including subscription states
Transactional Emails — Send HTML emails to users for notifications, alerts, or onboarding directly via the agent
Event Tracking — Log custom user actions to trigger automated workflows or segment your audience
Campaign & Template Oversight — List your saved templates and monitor the status of your marketing campaigns
Lifecycle Control — Seamlessly delete contacts or update metadata based on user feedback

The Plunk Email Marketing MCP Server exposes 8 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 Plunk Email Marketing to Pydantic AI via MCP

Follow these steps to integrate the Plunk Email Marketing 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 8 tools from Plunk Email Marketing with type-safe schemas

Why Use Pydantic AI with the Plunk Email Marketing MCP Server

Pydantic AI provides unique advantages when paired with Plunk Email Marketing 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 Plunk Email Marketing integration code

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

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

Plunk Email Marketing + Pydantic AI Use Cases

Practical scenarios where Pydantic AI combined with the Plunk Email Marketing MCP Server delivers measurable value.

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

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

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

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

Plunk Email Marketing MCP Tools for Pydantic AI (8)

These 8 tools become available when you connect Plunk Email Marketing to Pydantic AI via MCP:

create_or_update_contact

Provide metadata as a JSON string if needed. Create a new contact or update an existing one

delete_contact

Permanently delete a contact from your audience

get_contact_details

Get comprehensive information for a specific contact

list_contacts

Retrieve all contacts in your Plunk audience

list_email_campaigns

Retrieve a list of all email marketing campaigns

list_email_templates

Retrieve a list of all saved email templates

send_transactional_email

Send a transactional email to one or more recipients

track_user_event

Provide data as a JSON string. Track a custom action performed by a user

Example Prompts for Plunk Email Marketing in Pydantic AI

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

"List all contacts in my Plunk audience."

"Send a welcome email to 'test@example.com'."

Troubleshooting Plunk Email Marketing MCP Server with Pydantic AI

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

MCPServerHTTP not found

Update: pip install --upgrade pydantic-ai

Plunk Email Marketing + Pydantic AI FAQ

Common questions about integrating Plunk Email Marketing 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 Plunk Email Marketing MCP integration works identically with OpenAI, Anthropic, Google, or any supported provider.