Marketing

Lob integrations

Connect Lob to any other app, or use it from your AI client over MCP. Lob makes it easy to seamlessly print and mail letters, postcards, photos, posters and more via a web API.

Connects with an API keylob.com

What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.

Build solutions, not workarounds.

What do you want to automate with Lob?

Ask the assistant

You'll sign in before anything runs. What you typed comes with you.

Connect your AI client

Give your AI client this address.

https://mcp.apiant.ai

Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.

Set it up in your client
Claude Code

Run this in the directory you want to work in.

claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai

Start Claude Code there, approve the server, and sign in in the browser page it opens.

Claude Code guide (opens in a new tab)
Claude, web and desktop

Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.

Setup guide (opens in a new tab)
Cursor

Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.

Setup guide (opens in a new tab)
Zed

Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.

Setup guide (opens in a new tab)
Codex and the ChatGPT desktop app

Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.

Setup guide (opens in a new tab)
Any other MCP client

Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.

Setup guide (opens in a new tab)

Pair it

Connect Lob with another app

What your agent can do with Lob

Triggers and actions 40 actions

  • Action
    Autocomplete US Address

    Suggests complete US street addresses from the first part of one a person has typed, so an address field can autocomplete as they type.

  • Action
    Bulk Verify International Addresses

    Checks a batch of non-US addresses at once and returns each one standardized, with whether it is deliverable.

  • Action
    Cancel Check

    Cancels a check in Lob so it is not mailed. Only works while the check is still in the pre-print window.

  • Action
    Cancel Letter

    Cancels a letter in Lob so it is not mailed. Only works while the letter is still in the pre-print window.

  • Action
    Cancel Postcard

    Cancels a postcard in Lob so it is not mailed. Only works while the postcard is still in the pre-print window.

  • Action
    Create Address

    Saves an address in your Lob address book so you can reuse it as a sender or recipient on later mailings.

  • Action
    Create Bank Account

    Saves a bank account in Lob so you can send checks from it. Returns the new bank account's ID and whether it has been verified yet.

  • Action
    Create Template

    Saves a reusable HTML template in Lob that letters, postcards and checks can be built from. Returns the new template's ID and its published version.

  • Action
    Delete Address

    Deletes a saved address from Lob. Returns the deleted address's ID.

  • Action
    Delete Bank Account

    Deletes a saved bank account from Lob. Returns the deleted bank account's ID.

  • Action
    Delete Template

    Deletes an HTML template from Lob. Returns the deleted template's ID.

  • Action
    Get Address

    Returns one saved address from Lob by its ID, including the recipient details and any name/value pairs stored on it.

  • Action
    Get Bank Account

    Returns one saved bank account from Lob by its ID, including whether it has been verified.

  • Action
    Get Check

    Returns one check from Lob by its ID, including its amount, status and delivery tracking events.

  • Action
    Get Letter

    Returns one letter from Lob by its ID, including its status, addresses and delivery tracking events.

  • Action
    Get Postcard

    Returns one postcard from Lob by its ID, including its status, addresses and delivery tracking events.

  • Action
    Get Template

    Returns one HTML template from Lob by its ID, including its published version and version history.

  • Action
    List Addresses

    Returns the saved addresses in your Lob address book, newest first, with cursors for paging through more.

  • Action
    List Bank Accounts

    Returns the bank accounts saved in your Lob account, newest first, with cursors for paging through more.

  • Action
    List Booklets

    Returns the booklets you have created in Lob, newest first, with cursors for paging through more.

  • Action
    List Campaigns

    Returns the direct-mail campaigns in your Lob account, newest first, with cursors for paging through more.

  • Action
    List Checks

    Returns the checks you have sent through Lob, newest first, with cursors for paging through more.

  • Action
    List Informed Delivery Campaigns

    Returns the USPS Informed Delivery campaigns in your Lob account, newest first, with cursors for paging through more.

  • Action
    List Letters

    Returns the letters you have sent through Lob, newest first, with cursors for paging through more.

  • Action
    List Postcards

    Returns the postcards you have sent through Lob, newest first, with cursors for paging through more.

  • Action
    List QR Code Analytics

    Returns the QR code scans recorded on your Lob mailpieces — who scanned, when, and how many times — plus the overall scan total.

  • Action
    List Snap Packs

    Returns the snap packs you have sent through Lob, newest first, with cursors for paging through more.

  • Action
    List Templates

    Returns the saved HTML templates in your Lob account, newest first, with cursors for paging through more.

  • Action
    List Uploads

    Returns the recipient-list uploads in your Lob account, optionally narrowed to one campaign.

  • Action
    Look Up ZIP Code

    Looks up a US ZIP code and returns the cities, states and counties it covers, plus the USPS ZIP code type.

  • Action
    Reverse Geocode Lookup

    Takes a latitude and longitude and returns the nearest US ZIP codes with their city, state and distance from that point.

  • Action
    Send Check

    Prints and mails a physical check drawn on your Lob bank account to the recipient address you name.

  • Action
    Send Letter

    Prints and mails a letter to the recipient address you name, from a PDF, an HTML body, or a saved Lob template.

  • Action
    Send Postcard

    Prints and mails a postcard to the recipient address you name, using front and back artwork from a URL, HTML, or a saved Lob template.

  • Action
    Update Template

    Changes an existing Lob HTML template - its description, or which saved version is the live one. Anything you leave blank is left as it was.

  • Action
    Validate Recipient Identity

    Checks whether a person or company name is actually associated with a US address, and returns a confidence level and match score.

  • Action
    Verify Bank Account

    Confirms a Lob bank account by submitting the two micro-deposit amounts, so the account can be used to send checks.

  • Action
    Verify International Address

    Checks a non-US address, standardizes it, and tells you whether mail sent there is likely to be delivered.

  • Action
    Verify Single Line US Address

    Checks a US address given as one single line, standardizes it, and tells you whether mail sent there is deliverable.

  • Action
    Verify US Address

    Checks a US address, standardizes it to USPS format, and tells you whether mail sent there is deliverable.

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Questions

Lob, answered

Is there a Lob MCP server?

APIANT's MCP server at https://mcp.apiant.ai works with Lob. Add that address to any AI client that takes a remote MCP server, sign in once in your browser, and your client can build, test and run automations that use Lob. Nothing to install.

What can your agent do in Lob?

Any of Lob's 40 actions, including Create Address, Create Bank Account, Create Template and Send Check. Your agent maps the data both ways and tests every scenario before it ships.

Which apps can Lob connect to?

Any app in the catalog; the list on this page pairs Lob with each of them. If the other app is missing, point your agent at its API documentation and it builds the connector.

What happens when something fails?

Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.

Is there a free plan?

Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.