MCP For Claude Marketplace
Lob

Lob MCP Connector for Claude

A+

Send physical mail programmatically with an API for postcards, letters, and checks that integrates into your digital workflows.

9 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

Connect your Lob account to any AI agent and manage direct mail through natural conversation.

What you can do

  • Letter Sending — Create and send letters with PDF or HTML content
  • Postcard Campaigns — Send postcards with front/back designs
  • Check Printing — Create and mail checks with payment details
  • Address Verification — Verify and standardize US addresses
  • Template Management — Browse and manage mail templates
  • Delivery Tracking — Track mail pieces through the postal system

How it works

  1. Subscribe to this server
  2. Enter your Lob API Key (test or live)
  3. Start sending mail from Claude, Cursor, or any MCP-compatible client

Who is this for?

  • Marketing — run direct mail campaigns with postcards and letters
  • Finance — automate check printing and mailing
  • Operations — verify addresses and track mail delivery
direct-mailaddress-verificationprint-automationpostal-servicescampaign-management

9 tools expose this connector's capabilities to your AI agent.

create_letter

Supports certified mail and custom inserts. Send a physical letter

list_letters

List sent letters

autocomplete_address

Suggest address completions

create_check

Send a physical check

create_postcard

Supports HTML or PDF for front and back. Send a physical postcard

get_mail_tracking

Track a mail piece

list_postcards

List sent postcards

verify_intl_address

Verify an international address

verify_us_address

Verify a US address

See how to talk to your AI agent using Lob.

Send a welcome letter to a new customer and verify their address first.

Address verified! ✅ '123 Main St, Apt 4B, New York, NY 10001'. Deliverable: Yes. Type: Residential. Coordinates: 40.7484, -73.9967. Letter sent! ID: ltr_4521. To: John Smith. Pages: 2. Mail class: First Class. Expected delivery: Apr 30 — May 2. Cost: $0.92.

Show all mail pieces sent this month with delivery status.

This month: 45 mail pieces. Letters: 28, Postcards: 12, Checks: 5. Delivered: 38 (84%). In Transit: 5. Processing: 2. Returned: 0. Avg delivery: 3.2 days. Total cost: $52.40. Campaign 'Spring Promo' postcards: 12 sent, 10 delivered.

Create a check for $5,000 and browse mail templates.

Check created! ID: chk_8901. Amount: $5,000.00. To: Acme Corp, 456 Business Ave, Chicago, IL 60601. Memo: 'Q2 services payment'. Mail class: First Class. Expected delivery: May 1-3. Templates: 5 available. 'Welcome Letter' (HTML), 'Invoice Notice' (HTML), 'Thank You Card' (postcard), 'Payment Notice' (letter), 'Renewal Reminder' (postcard).

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

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