Lob API MCP connector

Updated 10 September 2026

Lob API is a direct mail platform with Postal IQ routing, printing, and delivery infrastructure for sending physical mail programmatically. The Lob API MCP connector allows AI agents to check credit balances, retrieve and list mail pieces, and delete records across supported resources. It also supports managing addresses, postcards, letters, and other mail objects, giving agents broad visibility into and control over direct mail operations within a workflow.

Authentication type

• Basic Auth - Requires a username and password to be configured for the agent to access the service.

Uses

Use the Lob API MCP connector to perform the following actions:

• Send physical letters, postcards, and checks through automated workflows
• Verify and standardize mailing addresses before dispatch
• Launch and monitor direct mail campaigns to targeted audiences
• Check available Lob credits balance before scheduling mailings
• Cancel scheduled mail pieces before they enter production
• Retrieve detailed records of past mail sends and templates
• Delete outdated addresses, templates, or campaign records
• List all mail pieces, campaigns, and templates in one view

Example prompts

Use the following example prompts to invoke Lob API MCP connector tools from your AI assistant or Boomi Connect workflow:

• Show me my current Lob credits balance.
• List all the postcards we sent out last week through Lob API.
• Cancel the mail piece scheduled for tomorrow in Lob API.
• Retrieve the details of the last direct mail campaign we launched.
• Delete the outdated address record for our old warehouse.
• Send our new promotional campaign to the customer list in Lob API.
• List all the templates currently saved in Lob API.
• Check the status of the check we mailed to a vendor.
• Show me every letter sent through Lob API this month.
• Retrieve the record for a specific postcard by its tracking number.

Lob API MCP connector tools

The Lob API MCP connector provides the following tools. Each tool maps to a specific action you can invoke from your AI agent or automation.

Tool	Description
get_lob_credits_balance	Get Lob Credits Balance
addresses_list	List
address_retrieve	Retrieve
address_delete	Delete
bank_account_retrieve	Retrieve
bank_account_delete	Delete
bank_accounts_list	List
billing_group_retrieve	Retrieve
billing_groups_list	List
booklet_retrieve	Retrieve
booklet_delete	Delete
booklets_list	List
buckslips_list	List
buckslip_retrieve	Retrieve
buckslip_delete	Delete
buckslip_orders_retrieve	Retrieve
campaigns_list	List
campaign_retrieve	Retrieve
campaign_delete	Delete
campaign_send	Send Campaign
cards_list	List
card_retrieve	Retrieve
card_delete	Delete
card_orders_retrieve	Retrieve
checks_list	List
check_retrieve	Retrieve
check_cancel	Cancel
creative_retrieve	Retrieve
informed_delivery_campaign_list	List
informed_delivery_campaign_retrieve	Retrieve
letter_retrieve	Retrieve
letter_cancel	Cancel
letters_list	List
postcard_retrieve	Retrieve
postcard_delete	Cancel
postcards_list	List
qr_codes_list	List
domain_get	Retrieve a domain
domain_delete	Delete a Domain
domain_list	List all domains
links_get	Retrieve a link
links_delete	Delete Link
links_list	List all links
resource_proof_retrieve	Retrieve
resource_proof_update	Update
resource_proof_create	Create
self_mailer_retrieve	Retrieve
self_mailer_delete	Delete
self_mailers_list	List
snap_pack_retrieve	Retrieve
snap_pack_delete	Delete
snap_packs_list	List
template_version_retrieve	Retrieve
template_version_delete	Delete
template_versions_list	List
template_retrieve	Retrieve
template_delete	Delete
templates_list	List
uploads_list	List
upload_create	Create
upload_retrieve	Retrieve
upload_update	Update
upload_delete	Delete
upload_export_create	Create Export
report_retrieve	Retrieve Line Item Report
export_retrieve	Retrieve Export