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Lob provides an API for businesses to automate and manage direct mail and address verification tasks. Use it to streamline mailing operations and ensure address accuracy.
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Browse all toolsDomain knowledge for Lob — workflow patterns, data models, and gotchas for your AI agent.
Lob provides an API for automating direct mail and address verification. Streamline mailing operations and ensure address accuracy.
Universal delete tool that removes ANY Lob resource using smart ID routing with colon-separated format. Supports addresses, templates, template versio...
Cancel a Lob check before it is sent. Can only cancel checks that haven't been sent yet. Returns confirmation of cancellation.
Cancel a Lob letter before it is sent. Can only cancel letters that haven't been sent yet. Returns confirmation of cancellation.
Cancel a Lob postcard before it is sent. Can only cancel postcards that haven't been sent yet. Returns confirmation of cancellation.
Create a buckslip order for a specific buckslip. Required fields: buckslip_id, quantity, use_type. Orders are used to purchase physical buckslips for ...
Create a card order for a specific card. Required fields: card_id, quantity, use_type. Orders are used to purchase physical cards for mailing campaign...
Create and send a Lob check. Required fields: to (address), from_address (address), bank_account (bank_...), amount (dollars). Checks are sent immedia...
Create and send a Lob letter. Required fields: to (address), from_address (address), file (template, HTML, or PDF URL). Letters are sent immediately u...
Create and send a Lob postcard. Required fields: to (address), from_address (address), front (template or HTML). Postcards are sent immediately unless...
Create and send a Lob self-mailer. Required fields: to (address), from_address (address), inside (template or HTML), outside (template or HTML), size....
Create an export for a Lob upload. Required fields: upl_id, type. Exports allow you to download upload data including validation results and failure d...
Fetch a single Lob address by ID.
Fetch a single Lob bank account by ID.
Fetch a single Lob billing group by ID.
Fetch a single Lob buckslip by ID.
Fetch a single Lob card by ID.
Fetch a single Lob check by ID.
Fetch a single Lob letter by ID.
Fetch a single Lob postcard by ID.
Fetch a single Lob self mailer by ID.
Fetch a single Lob template by ID.
Fetch a specific Lob template version by ID.
Fetch a single Lob upload by ID.
List stored addresses in your Lob account. Returns address metadata and IDs used by other Lob tools.
List bank accounts linked to your Lob account.
List billing groups in your Lob account.
List orders for a specific Lob buckslip.
List buckslips in your Lob account.
List campaigns in your Lob account.
List orders for a specific Lob card.
List cards in your Lob account.
List checks in your Lob account.
List letters in your Lob account.
List postcards in your Lob account.
List QR code analytics for Lob campaigns.
List self mailers in your Lob account.
List templates in your Lob account.
List versions for a specific Lob template.
List file uploads in your Lob account.
Create or update a Lob address. Provide adr_id to update existing address, omit to create new. Required fields for create: name, address_line1, addres...
Create or update a Lob bank account. Provide bank_id to update existing bank account, omit to create new. Required fields for create: routing_number, ...
Create or update a Lob billing group. Provide bg_id to update existing billing group, omit to create new. Required field for create: name.
Create or update a Lob buckslip. Provide buckslip_id to update existing buckslip, omit to create new. Required field for create: size.
Create or update a Lob campaign. Provide cmp_id to update existing campaign, omit to create new. Required fields for create: name, schedule_type. Camp...
Create or update a Lob card. Provide card_id to update existing card, omit to create new. Required field for create: size.
Create or update a Lob creative. Provide creative_id to update existing creative, omit to create new. Required fields: campaign_id (always), resource_...
Create or update a Lob template. Provide tmpl_id to update existing template, omit to create new. Required field for create: html.
Create or update a Lob template version. Provide vrsn_id to update existing version, omit to create new. Required fields: tmpl_id (always), html (for ...
Create or update a Lob upload. Provide upl_id to update existing upload, omit to create new. Required fields for create: campaign_id, name. Uploads ar...
Lob provides an API for businesses to automate and manage direct mail and address verification tasks. Use it to streamline mailing operations and ensure address accuracy. It provides 49 tools that AI agents can use through the Model Context Protocol (MCP).
Add the MCPBundles server URL to your MCP client configuration (Claude Desktop, Cursor, VS Code, etc.). The URL format is: https://mcp.mcpbundles.com/bundle/lob. Authentication is handled automatically.
Lob provides 49 tools that can be called by AI agents, along with a SKILL.md that gives your AI agent domain knowledge about when and how to use them.
Lob uses API Key. Lob requires credentials. Connect via MCPBundles and authentication is handled automatically.
Connect Lob to any MCP client in minutes
Model Context Protocol lets AI tools call external capabilities securely through a single URL. This bundle groups tools behind an MCP endpoint that many clients can use.
Skip the manual setup! Use the .mcpb file format for one-click installation. Check the Claude Desktop tab for setup instructions.
Select ChatGPT, Cursor, Claude Code, or another tab for copy-paste config.
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