Bring Kyb
to LangChain
Create your Vinkius account to connect Middesk to LangChain and start using all 9 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.
Compatible with every major AI agent and IDE
What is the 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.
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
How it works
- Subscribe to this server
- Enter your Middesk API Key
- Start verifying businesses directly from Claude, Cursor, or any MCP client
Built-in capabilities (9)
Autocomplete business identity
Requires legal name. Create a new business verification
Get a specific business
Get a specific document
Get a specific tax registration
List all businesses
List documents for a business
List tax registrations
g., website). Prefill business details
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Middesk through native MCP adapters. Connect 9 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.
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The largest ecosystem of integrations, chains, and agents. combine Middesk MCP tools with 500+ LangChain components
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Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
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LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
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Memory and conversation persistence let agents maintain context across Middesk queries for multi-turn workflows
Middesk in LangChain
Why run Middesk with Vinkius?
The Middesk 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 9 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.

* 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
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.




Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Middesk using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Middesk and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Middesk to LangChain 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.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Middesk for LangChain
Every request between LangChain and Middesk is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
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.
How does LangChain connect to MCP servers?
Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.
Which LangChain agent types work with MCP?
All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.
Can I trace MCP tool calls in LangSmith?
Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.
MultiServerMCPClient not found
Install: pip install langchain-mcp-adapters
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