How to Use the Lob MCP in Cursor

Q: Can I test Lob address verification directly inside the Cursor editor?

Yes. You can use the verifyusaddress tool using this MCP Server in Agent mode to test how your application handles both valid and invalid US addresses without writing boilerplate test scripts.

Q: How do I list sent letters using Lob in Cursor?

Ask the agent to run listletters with an optional limit. The editor will display a list of recent mailings, including their delivery status and tracking numbers, right in the chat sidebar.

Q: How do I manage contacts in my address book?

You can use createaddress, deleteaddress, and listaddresses to manage your recipient list. Your agent can script batch updates to sync your local database with your remote address book.

Q: Where is my bank routing and account data processed for security?

Sensitive financial data processed by createbankaccount is sent directly to the API via secure HTTPS. The MCP configuration runs locally on your machine, meaning your raw banking credentials never touch intermediate third-party logging servers.

Build automated physical mail workflows inside Cursor by calling the Lob API directly from your codebase.

See Vinkius in Action

Works with every AI agent you already use

…and any MCP-compatible client

MCP Servers - Free for Subscribers

Connect Lob MCP to Cursor

Create your Vinkius account to connect Lob to Cursor and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

GDPR Free for Subscribers

Setup Lob with Cursor

Ask AI about this MCP

ChatGPT

Claude

Perplexity

Generate code using live address data

The `verify_us_address` tool validates real-world delivery details so your agent can call MCP tools and test address-handling code with actual API responses. Instead of guessing how the API structures its JSON payloads, you get live, standardized address formats injected straight into your editor. When you need to build autocomplete fields, the `autocomplete_us_address` tool provides real-time suggestions that you can use to debug your frontend forms. This ensures your code works with the exact structure returned by the physical mail API.

Programmatic check and payment dispatch

The `create_check` tool lets your agent write and execute payment scripts that physically mail checks to vendors. You can write your billing logic in Cursor, run it in Agent mode, and watch the server dispatch real payments using your registered bank details. To manage these accounts, the `list_bank_accounts` tool pulls your active funding sources directly into your editor context. You can map these IDs to your local configuration files without switching back and forth to a web dashboard.

Manage mail templates inside Cursor

The `create_template` tool uploads your local HTML files directly to the API as reusable mail templates. You can edit your HTML and CSS inside the editor, and have your agent sync the changes to your account instantly. If you need to verify how your templates look, you can use `get_template` to pull the current layout details. This MCP Server integration removes the friction of manual template uploads during development.

Setup guide

Set up Lob MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the Lob MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent Lob transactions." If the MCP tools are loaded correctly, Cursor will call the Lob tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "lob-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Lob. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

Why Choose Vinkius

Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.

Connect Lob now

Real-time monitoring

Live

visibility into every interaction

Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.

Built-in savings

60%

lower AI costs

Vinkius compresses data between your apps and your AI automatically. Lower bills every month — no configuration required.

Single dashboard

One

place for every integration

Every tool your AI connects to, managed from a single screen. One account, complete control.

Common questions about Lob MCP in Cursor

Yes. You can use the `verify_us_address` tool using this MCP Server in Agent mode to test how your application handles both valid and invalid US addresses without writing boilerplate test scripts.

Ask the agent to run `list_letters` with an optional limit. The editor will display a list of recent mailings, including their delivery status and tracking numbers, right in the chat sidebar.

No, the API does not expose a cancel tool for checks in this server. You can use `get_check` to monitor its status, but once `create_check` runs, the payment process begins.

You can use `create_address`, `delete_address`, and `list_addresses` to manage your recipient list. Your agent can script batch updates to sync your local database with your remote address book.

Sensitive financial data processed by `create_bank_account` is sent directly to the API via secure HTTPS. The MCP configuration runs locally on your machine, meaning your raw banking credentials never touch intermediate third-party logging servers.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

OpenAI Agents SDK sdk-python

Google ADK sdk-python

Pydantic AI sdk-python

Vercel AI SDK sdk-typescript