Can I see the most common reason users are trying to cancel?

Yes! Use the `get_session_aggregates` tool. The agent will return grouped data showing which reasons are being selected most frequently in your cancellation flows.

How do I update the billing contact for a customer whose payment failed?

Use the `update_billing_contacts` tool. Provide the customer ID and the new contact details. This ensures Churnkey sends dunning and recovery emails to the right person.

Where do I find my Churnkey Data API Key and App ID?

Log in to your Churnkey dashboard and navigate to **Settings > Account**. You can find your App ID and generate a Data API Key in the API section.

Churnkey MCP Server for Pydantic AI 8 tools — connect in under 2 minutes

Name: Churnkey
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 Churnkey 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 Churnkey "
            "(8 tools)."
        ),
    )

    result = await agent.run(
        "What tools are available in Churnkey?"
    )
    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 Churnkey MCP Server

Connect your Churnkey account to any AI agent and take full control of your customer retention and cancellation automation through natural conversation. Streamline how you handle churn and recover failed payments.

Pydantic AI validates every Churnkey 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

Session Oversight — List and retrieve details for all customer cancellation flow sessions natively
Aggregation Intelligence — Access grouped session counts to identify trends in churn reasons flawlessly
Recovery Logistics — Update and manage billing recovery contacts for specific customers securely
Retention Deep-Dives — List all cancellation sessions for a specific customer to understand their history flawlessly
Compliance Management — Access and delete customer data for GDPR requests directly within your workspace flawlessly
Data Logistics — Retrieve session metadata including offer types (discounts, pauses) and billing intervals flawlessly

The Churnkey 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 Churnkey to Pydantic AI via MCP

Follow these steps to integrate the Churnkey 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 Churnkey with type-safe schemas

Why Use Pydantic AI with the Churnkey MCP Server

Pydantic AI provides unique advantages when paired with Churnkey 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 Churnkey integration code

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

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

Churnkey + Pydantic AI Use Cases

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

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

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

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

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

Churnkey MCP Tools for Pydantic AI (8)

These 8 tools become available when you connect Churnkey to Pydantic AI via MCP:

bulk_update_billing_contacts

Update billing recovery contacts for multiple customers at once

delete_customer_gdpr_data

Delete all data for a customer for GDPR compliance

get_customer_gdpr_data

Access all data stored for a customer for GDPR compliance

get_retention_session_details

Get details for a specific cancellation session

get_session_aggregates

Retrieve grouped session counts

list_customer_retention_history

List all cancellation sessions for a specific customer

list_retention_sessions

List cancellation flow sessions

update_billing_contacts

Update recovery contacts for a specific customer

Example Prompts for Churnkey in Pydantic AI

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

"Show me the last 5 cancellation sessions in Churnkey."

"What are the session aggregates for this month?"

"List all retention sessions for customer 'cust_123'."

Troubleshooting Churnkey MCP Server with Pydantic AI

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

MCPServerHTTP not found

Update: pip install --upgrade pydantic-ai

Churnkey + Pydantic AI FAQ

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