Where do I find my Middesk API Key?

Log in to your Middesk Dashboard, go to Settings > Developer > Credentials to find your secret keys.

Does this support the Sandbox environment?

Yes, you can use your 'mk_test_...' keys to interact with the Middesk Sandbox.

Middesk MCP Server for Pydantic AI 9 tools — connect in under 2 minutes

Name: Middesk
Availability: InStock
Author: Vinkius

ai.pydantic.dev/mcp

Built by Vinkius GDPR 9 Tools SDK

Pydantic AI brings type-safe agent development to Python with first-class MCP support. Connect Middesk 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 Middesk "
            "(9 tools)."
        ),
    )

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

asyncio.run(main())

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* 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 Middesk MCP Server

Connect your Middesk account to automate Business Identity (KYB) and compliance workflows. This server provides comprehensive access to Middesk's verification engine.

Pydantic AI validates every Middesk tool response against typed schemas, catching data inconsistencies at build time. Connect 9 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

Entity Verification — Create and monitor business verification requests with real-time status
Document Retrieval — Access official Secretary of State filings and corporate documents
Smart Prefill — Automatically populate business details from a single identifier like EIN or website
Tax Registration — Manage and track state tax registrations and payroll compliance
Identity Autocomplete — Search for businesses with live SOS record suggestions

The Middesk MCP Server exposes 9 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 Middesk to Pydantic AI via MCP

Follow these steps to integrate the Middesk 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 9 tools from Middesk with type-safe schemas

Why Use Pydantic AI with the Middesk MCP Server

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

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

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

Middesk + Pydantic AI Use Cases

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

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

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

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

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

Middesk MCP Tools for Pydantic AI (9)

These 9 tools become available when you connect Middesk to Pydantic AI via MCP:

autocomplete_identity

Autocomplete business identity

create_business

Requires legal name. Create a new business verification

get_business

Get a specific business

get_document

Get a specific document

get_tax_registration

Get a specific tax registration

list_businesses

List all businesses

list_documents

List documents for a business

list_tax_registrations

List tax registrations

prefill_business

g., website). Prefill business details

Example Prompts for Middesk in Pydantic AI

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

"Verify the business 'Acme Corp' located in Delaware."

"Find SOS filings for business ID 'bus_123'."

Troubleshooting Middesk MCP Server with Pydantic AI

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

MCPServerHTTP not found

Update: pip install --upgrade pydantic-ai

Middesk + Pydantic AI FAQ

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