# How to connect Lob to Claude Cowork ```json { "title": "How to connect Lob to Claude Cowork", "toolkit": "Lob", "toolkit_slug": "lob", "framework": "Claude Cowork", "framework_slug": "claude-cowork", "url": "https://composio.dev/toolkits/lob/framework/claude-cowork", "markdown_url": "https://composio.dev/toolkits/lob/framework/claude-cowork.md", "updated_at": "2026-03-29T06:40:52.638Z" } ``` ## Introduction Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your Lob account to Cowork via Composio Connect, enabling it to send a postcard to a verified address, validate this list of mailing addresses, track delivery status for recent letters, and more such actions on your behalf without compromising your account security. ## Also integrate Lob with - [OpenAI Agents SDK](https://composio.dev/toolkits/lob/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/lob/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/lob/framework/claude-code) - [Codex](https://composio.dev/toolkits/lob/framework/codex) - [OpenClaw](https://composio.dev/toolkits/lob/framework/openclaw) - [Hermes](https://composio.dev/toolkits/lob/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/lob/framework/cli) - [Google ADK](https://composio.dev/toolkits/lob/framework/google-adk) - [LangChain](https://composio.dev/toolkits/lob/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/lob/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/lob/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/lob/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/lob/framework/crew-ai) ## Connect Lob to Claude Cowork ### Connecting Lob to Claude Cowork 1. Open Customize In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top. 2. Add the Composio MCP server Click Add custom connector and paste in the Composio MCP server URL: ```bash https://connect.composio.dev/mcp ``` ## What is Claude Cowork? Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools. With Composio Connect, Cowork can securely access apps like Lob through MCP without you sharing account credentials directly with the agent. ## What is the Lob MCP server, and what's possible with it? The Lob MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Lob account. It provides structured and secure access so your agent can perform Lob operations on your behalf. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `LOB_CREATE_DOMAIN` | Create Domain | Tool to add a new custom domain for creating custom links. Use when you need to register a domain for short link customization. | | `LOB_CREATE_LINK` | Create Link | Tool to create a shortened URL from a long URL using Lob's link shortening service. Use when you need to shorten a long URL either by using a custom domain or Lob's own short domain. | | `LOB_DELETE_DOMAIN` | Delete Domain | Tool to delete a registered domain. Use only after confirming all associated links with the domain are deleted. | | `LOB_DELETE_LINK` | Delete Link | Tool to delete a shortened link. Use when you need to remove a previously created short link from the system. | | `LOB_DELETE_UPLOAD` | Delete Upload | Tool to delete an existing upload by its unique identifier. Use when you need to permanently remove an upload and its associated data. | | `LOB_GET_DOMAIN` | Get Domain | Tool to retrieve details for a single domain from Lob. Use when you need to get configuration status, redirect links, or other metadata for a specific domain. | | `LOB_GET_LINK` | Get Link | Tool to retrieve a single shortened link. Use when you need to fetch details about a specific link by its ID. | | `LOB_LIST_DOMAINS` | List Domains | Tool to retrieve a list of all created domains. Use when you need to view or manage custom domains configured for URL shortening. Supports pagination and filtering by configuration status. | | `LOB_LIST_SHORTENED_LINKS` | List Shortened Links | Tool to retrieve a list of shortened links. The list is sorted by creation date, with the most recently created appearing first. Use when you need to view all links or filter by campaign or domain. | | `LOB_LIST_QR_CODE_ANALYTICS` | List QR Code Analytics | Tool to retrieve a list of your QR codes and their analytics data. The QR codes are returned sorted by scan date, with the most recently scanned QR codes appearing first. | | `LOB_LIST_UPLOADS` | List Uploads | Tool to list uploads from Lob. Use when you need to retrieve all uploads or filter uploads by campaign ID. | | `LOB_UPDATE_LINK` | Update Link | Tool to update any properties of a shortened link. Use when you need to modify the redirect URL, title, or metadata of an existing Lob shortened link. Requires the link_id and at least the redirect_link to update. | | `LOB_VALIDATE_IDENTITY` | Validate Identity | Tool to validate whether a given name is associated with an address. Use when you need to verify identity information by checking if a recipient name matches address records. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Lob MCP server connects Claude Cowork to your Lob account through Composio. Once connected, Cowork can use the available Lob tools and triggers to complete tasks on your behalf. ## Complete Code None listed. ## How to build Lob MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/lob/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/lob/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/lob/framework/claude-code) - [Codex](https://composio.dev/toolkits/lob/framework/codex) - [OpenClaw](https://composio.dev/toolkits/lob/framework/openclaw) - [Hermes](https://composio.dev/toolkits/lob/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/lob/framework/cli) - [Google ADK](https://composio.dev/toolkits/lob/framework/google-adk) - [LangChain](https://composio.dev/toolkits/lob/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/lob/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/lob/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/lob/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/lob/framework/crew-ai) ## Related Toolkits - [Google Sheets](https://composio.dev/toolkits/googlesheets) - Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly. - [Notion](https://composio.dev/toolkits/notion) - Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place. - [Airtable](https://composio.dev/toolkits/airtable) - Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations. - [Asana](https://composio.dev/toolkits/asana) - Asana is a collaborative work management platform for teams to organize and track projects. It streamlines teamwork, boosts productivity, and keeps everyone aligned on goals. - [Google Tasks](https://composio.dev/toolkits/googletasks) - Google Tasks is a to-do list and task management tool integrated into Gmail and Google Calendar. It helps you organize, track, and complete tasks across your Google ecosystem. - [Linear](https://composio.dev/toolkits/linear) - Linear is a modern issue tracking and project planning tool for fast-moving teams. It helps streamline workflows, organize projects, and boost productivity. - [Jira](https://composio.dev/toolkits/jira) - Jira is Atlassian’s platform for bug tracking, issue tracking, and agile project management. It helps teams organize work, prioritize tasks, and deliver projects efficiently. - [Clickup](https://composio.dev/toolkits/clickup) - ClickUp is an all-in-one productivity platform for managing tasks, docs, goals, and team collaboration. It streamlines project workflows so teams can work smarter and stay organized in one place. - [Monday](https://composio.dev/toolkits/monday) - Monday.com is a customizable work management platform for project planning and collaboration. It helps teams organize tasks, automate workflows, and track progress in real time. - [Addressfinder](https://composio.dev/toolkits/addressfinder) - Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time. - [Agiled](https://composio.dev/toolkits/agiled) - Agiled is an all-in-one business management platform for CRM, projects, and finance. It helps you streamline workflows, consolidate client data, and manage business processes in one place. - [Ascora](https://composio.dev/toolkits/ascora) - Ascora is a cloud-based field service management platform for service businesses. It streamlines scheduling, invoicing, and customer operations in one place. - [Basecamp](https://composio.dev/toolkits/basecamp) - Basecamp is a project management and team collaboration tool by 37signals. It helps teams organize tasks, share files, and communicate efficiently in one place. - [Beeminder](https://composio.dev/toolkits/beeminder) - Beeminder is an online goal-tracking platform that uses monetary pledges to keep you motivated. Stay accountable and hit your targets with real financial incentives. - [Boxhero](https://composio.dev/toolkits/boxhero) - Boxhero is a cloud-based inventory management platform for SMBs, offering real-time updates, barcode scanning, and team collaboration. It helps businesses streamline stock tracking and analytics for smarter inventory decisions. - [Breathe HR](https://composio.dev/toolkits/breathehr) - Breathe HR is cloud-based HR software for SMEs to manage employee data, absences, and performance. It simplifies HR admin, making it easy to keep employee records accurate and up to date. - [Breeze](https://composio.dev/toolkits/breeze) - Breeze is a project management platform designed to help teams plan, track, and collaborate on projects. It streamlines workflows and keeps everyone on the same page. - [Bugherd](https://composio.dev/toolkits/bugherd) - Bugherd is a visual feedback and bug tracking tool for websites. It helps teams and clients report website issues directly on live sites for faster fixes. - [Canny](https://composio.dev/toolkits/canny) - Canny is a platform for managing customer feedback and feature requests. It helps teams prioritize product decisions based on real user insights. - [Chmeetings](https://composio.dev/toolkits/chmeetings) - Chmeetings is a church management platform for events, members, donations, and volunteers. It streamlines church operations and improves community engagement. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Lob MCP? With a standalone Lob MCP server, the agents and LLMs can only access a fixed set of Lob tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Lob and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Claude Cowork? Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Lob tools. ### Can I manage the permissions and scopes for Lob while using Tool Router? Yes, absolutely. You can configure which Lob scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do. ### How safe is my data with Composio Tool Router? All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Lob data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)