Lob MCP Server for Claude Code 21 tools — connect in under 2 minutes
Claude Code is Anthropic's agentic CLI for terminal-first development. Add Lob as an MCP server in one command and Claude Code will discover every tool at runtime — ideal for automation pipelines, CI/CD integration, and headless workflows via the Vinkius.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
Vinkius Desktop App
The modern way to manage MCP Servers — no config files, no terminal commands. Install Lob and 2,500+ MCP Servers from a single visual interface.
# Your Vinkius token — get it at cloud.vinkius.com
claude mcp add lob --transport http "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
* 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 Lob MCP Server
Lob MCP Server enables AI agents to send physical mail directly from your applications. Create and mail letters, postcards, and checks programmatically through Lob's print and mail API. Verify US and international addresses, autocomplete partial addresses, and manage your address book. Build reusable HTML templates for personalized mailings. Perfect for automating vendor payments, customer communications, marketing campaigns, payroll checks, and direct mail operations. All mail is printed, processed, and delivered within 24 hours via USPS integration.
Claude Code registers Lob as an MCP server in a single terminal command. Once connected, Claude Code discovers all 21 tools at runtime and can call them headlessly — ideal for CI/CD pipelines, cron jobs, and automated workflows where Lob data drives decisions without human intervention.
The Lob MCP Server exposes 21 tools through the Vinkius. Connect it to Claude Code 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 Lob to Claude Code via MCP
Follow these steps to integrate the Lob MCP Server with Claude Code.
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
Add the MCP Server
Run the command above in your terminal
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
Start using Lob
Ask Claude: "Using Lob, show me..." — 21 tools are ready
Why Use Claude Code with the Lob MCP Server
Claude Code provides unique advantages when paired with Lob through the Model Context Protocol.
Single-command setup: `claude mcp add` registers the server instantly — no config files to edit or applications to restart
Terminal-native workflow means MCP tools integrate seamlessly into shell scripts, CI/CD pipelines, and automated DevOps tasks
Claude Code runs headlessly, enabling unattended batch processing using Lob tools in cron jobs or deployment scripts
Built by the same team that created the MCP protocol, ensuring first-class compatibility and the fastest adoption of new protocol features
Lob + Claude Code Use Cases
Practical scenarios where Claude Code combined with the Lob MCP Server delivers measurable value.
CI/CD integration: embed Lob tool calls in your deployment pipeline to validate configurations or fetch secrets before shipping
Headless batch processing: schedule Claude Code to query Lob nightly and generate reports without human intervention
Shell scripting: pipe Lob outputs into other CLI tools for data transformation, filtering, and aggregation
Infrastructure monitoring: run Claude Code in a cron job to query Lob status endpoints and alert on anomalies
Lob MCP Tools for Claude Code (21)
These 21 tools become available when you connect Lob to Claude Code via MCP:
autocomplete_us_address
Autocomplete a partial US address
cancel_letter
Only works if status is still "processing". Cancel a letter before it enters production
create_address
Requires name and address_line1. Create a new address in your Lob address book
create_bank_account
Requires description, routing_number, account_number, account_type (company/individual), and signatory. Add a bank account for sending checks
create_check
Requires recipient (to), bank account ID, and amount. Optional: memo, logo, description. Create and mail a physical check through Lob
create_letter
Requires recipient (to), sender (from), and file content. Supports HTML templates with merge variables, color options, and mail type selection. Create and mail a physical letter through Lob
create_postcard
Requires recipient (to) and front design. Optional: back design, message, merge variables. Create and mail a physical postcard through Lob
create_template
Create a reusable HTML template for mailings
delete_address
Delete an address from your Lob address book
get_address
Get details of a specific address
get_check
Get details of a specific check by ID
get_letter
Get details of a specific letter by ID
get_postcard
Get details of a specific postcard by ID
get_template
Get details of a specific template
list_addresses
Use optional limit to control result count. List addresses in your Lob address book
list_bank_accounts
Use optional limit to control result count. List bank accounts in your Lob account
list_checks
Track payments, audit disbursements. List physical checks sent through Lob
list_letters
Each letter includes status, tracking number, and expected delivery date. Use optional limit to control result count. List physical letters sent through Lob. Track mailings, check delivery status, and review letter history
list_postcards
Use optional limit to control result count. List physical postcards sent through Lob
list_templates
List HTML templates for mailings
verify_us_address
Verify and standardize a US address
Example Prompts for Lob in Claude Code
Ready-to-use prompts you can give your Claude Code agent to start working with Lob immediately.
"Send a letter to John Doe at 123 Main St, New York, NY 10001 with our welcome package HTML template"
"Verify if this address is deliverable: 185 Berry St, San Francisco, CA 94107"
"Send a $500 check to ABC Consulting for consulting services rendered in March"
Troubleshooting Lob MCP Server with Claude Code
Common issues when connecting Lob to Claude Code through the Vinkius, and how to resolve them.
Command not found: claude
npm install -g @anthropic-ai/claude-codeConnection timeout
Lob + Claude Code FAQ
Common questions about integrating Lob MCP Server with Claude Code.
How do I add an MCP server to Claude Code?
claude mcp add --transport http "" in your terminal. Claude Code registers the server and discovers all tools immediately.Can Claude Code run MCP tools in headless mode?
How do I list all connected MCP servers?
claude mcp in your terminal to see all registered servers and their status, or type /mcp inside an active Claude Code session.Connect Lob with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect Lob to Claude Code
Get your token, paste the configuration, and start using 21 tools in under 2 minutes. No API key management needed.