How do I connect my Lob account?

You subscribe to the MCP on Vinkius and enter your Lob API key. Once connected, it is ready to use in your AI client.

Can I send different types of mail?

Yes, you can send letters, postcards, and physical checks.

Does it support international mail?

Yes, the MCP includes capabilities to verify international addresses to help ensure successful delivery.

Can I track my mail through the AI?

Yes, you can use the tracking capability to get updates on your mail pieces through your agent.

What AI clients can I use with this MCP?

You can use any MCP-compatible client, including Claude, Cursor, and Windsurf.

Can I send letters and postcards through the AI agent?

Yes. Create and send letters with PDF/HTML content and postcards with custom designs. Track delivery through the postal system.

Does Lob use Basic Auth?

Yes. Lob uses HTTP Basic Auth with the API Key as username (no password) against api.lob.com/v1.

Can I verify US addresses?

Yes. Verify and standardize US addresses with CASS certification. Returns deliverability status, corrected addresses, and coordinates.

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Connect Lob (Alternative) to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Turn your digital commands into delivered mail.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 9 capabilities

We ship only the actions that matter.

Capability set01 / 03

01-03

3 capabilities in this set.

Part of 9 available through Lob.

01
Autocomplete address
This capability suggests address completions to ensure accuracy. It helps prevent delivery failures by fixing typos in real time.
02
Create check
This capability prints and mails physical checks. You provide the payment details and your agent handles the rest.
03
Create letter
This capability sends physical letters using PDF or HTML content. It supports certified mail and custom inserts for more formal needs.

Capability set02 / 03

04-06

3 capabilities in this set.

Part of 9 available through Lob.

04
Create postcard
This capability handles postcard mailings with custom front and back designs. You can use HTML or PDF files for the artwork.
05
Get mail tracking
This capability tracks a specific piece of mail. Use it to see exactly where a letter or check is in the postal system.
06
List letters
This capability retrieves a list of all letters you have sent. It's useful for auditing your recent mail history.

Capability set03 / 03

07-09

3 capabilities in this set.

Part of 9 available through Lob.

07
List postcards
This capability pulls a list of your sent postcards. You can use it to review previous marketing mailings.
08
Verify intl address
This capability validates international addresses. It ensures your global mailings are addressed correctly before you send them.
09
Verify us address
This capability checks US addresses for accuracy. It helps you standardize recipient data to avoid returned mail.

Real work

What teams actually run

Customer Onboarding

Send a physical welcome letter automatically once a new user signs up digitally.

Vendor Payments

Instruct your agent to mail a check to a supplier after an invoice is approved.

Direct Mail Marketing

Launch a postcard campaign to a list of verified addresses using simple commands.

Logistics Auditing

Ask your agent to summarize all mail sent in a specific timeframe to track costs.

Automate a task

Put Lob to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

How to send checks

One connector, every AI

Lob works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Lob to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

956ms average. Fast in production.

Lob is checked daily against the live service.

Daily averagePeak 1240ms

Oct 3Today

Fastest day: 773ms
Slowest day: 1240ms
14-day trend: Slowing+18%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 9 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Lob, so you can see the experience inside your AI.

It does not authenticate your account with Lob. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Lob Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_l6GbZUPsQ7NqWUpWAnoUWSeNQZkvwtYKmPJFmEaP/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Lob capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "lob-alternative-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_l6GbZUPsQ7NqWUpWAnoUWSeNQZkvwtYKmPJFmEaP/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Lob in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Lob owners hand off.

This MCP is built for professionals who need to bridge digital triggers with physical mail delivery.

01
Marketing Managers
They hand off postcard and letter campaign instructions to the agent.
02
Finance Teams
They use the agent to automate the printing and mailing of physical checks.
03
Operations Staff
They rely on the agent to verify addresses and monitor mail delivery status.

FAQ

Questions Lob owners ask.

01
How do I connect my Lob account?
You subscribe to the MCP on Vinkius and enter your Lob API key. Once connected, it is ready to use in your AI client.
02
Can I send different types of mail?
Yes, you can send letters, postcards, and physical checks.
03
Does it support international mail?
Yes, the MCP includes capabilities to verify international addresses to help ensure successful delivery.
04
Can I track my mail through the AI?
Yes, you can use the tracking capability to get updates on your mail pieces through your agent.
05
What AI clients can I use with this MCP?
You can use any MCP-compatible client, including Claude, Cursor, and Windsurf.
06
Can I send letters and postcards through the AI agent?
Yes. Create and send letters with PDF/HTML content and postcards with custom designs. Track delivery through the postal system.
07
Does Lob use Basic Auth?
Yes. Lob uses HTTP Basic Auth with the API Key as username (no password) against api.lob.com/v1.
08
Can I verify US addresses?
Yes. Verify and standardize US addresses with CASS certification. Returns deliverability status, corrected addresses, and coordinates.

Explore

More in Marketing Automation

Connect Lob to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Autocomplete address

Create check

Create letter

04-06

Create postcard

Get mail tracking

List letters

07-09

List postcards

Verify intl address

Verify us address

What teams actually run

Customer Onboarding

Vendor Payments

Direct Mail Marketing

Logistics Auditing

Building your own app? The connector is yours to use.

Lob Connector

Claude Desktop

Marketing Managers

Finance Teams

Operations Staff

How do I connect my Lob account?

Can I send different types of mail?

Does it support international mail?

Can I track my mail through the AI?

What AI clients can I use with this MCP?

Can I send letters and postcards through the AI agent?

Does Lob use Basic Auth?

Can I verify US addresses?

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