--- title: "Connect Slack to Lob - APIANT.ai" description: "When \"New Channel\" fires in Slack, your agent runs \"Create Address\" in Lob. Describe the whole flow and it is built, tested on every scenario and kept running." canonical: "https://apiant.ai/connect/slack-to-lob" --- # Connect Slack to Lob When **New Channel** fires in [Slack](https://apiant.ai/connections/slack), your agent runs **Create Address** in [Lob](https://apiant.ai/connections/lob). Describe the whole flow and it is built, tested on every scenario and kept running. Slack **15** triggers Slack **60** actions Lob **40** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Slack and Lob to do together? Give your AI client this address. `https://mcp.apiant.ai` One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. 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)](https://apiant.ai/docs/mcp/claude-code) ### 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)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) ### Zed Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) Example flows ## What Slack can start in Lob - When **New Channel** in Slack then **Create Address** in Lob - When **New Channel Member** in Slack then **Create Bank Account** in Lob Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships. Everything your agent can do with Slack and Lob ## Triggers and actions 15 triggers · 100 actions - Trigger **New Channel** Triggers when a new channel is created in the workspace. - Trigger **New Channel (instant)** Triggers when a new channel is created (Slack event channel_created). - Trigger **New Channel Member** Triggers when a member joins a chosen channel (Slack event member_joined_channel). - Trigger **New File (instant)** Triggers when a new file is uploaded to the workspace (Slack event file_created). - Trigger **New Mention (instant)** Triggers when a username or keyword is mentioned in a channel. Events API message events with keyword filter. - Trigger **New Message Posted to Channel** Triggers when a message is posted to a chosen channel (Slack event message.channels). - Trigger **New Message Posted to Private Channel** Triggers when a message is posted to a chosen private channel or group DM (Slack events message.groups, message.mpim). - Trigger **New Pinned Item** Triggers when an item is pinned in a channel. - Trigger **New Public Message Posted Anywhere** Triggers when a message is posted to any public channel (Slack event message.channels). - Trigger **New Reaction Added** Triggers when an emoji reaction is added to a message (Slack event reaction_added). - Trigger **New Saved Message** Triggers when a message or file is saved (starred) (Slack event star_added). - Trigger **New Team Custom Emoji** Triggers when a custom emoji is added to the workspace (Slack event emoji_changed). - Trigger **New Thread Reply** Triggers when a new reply is added to a message thread. - Trigger **New User** Triggers when a new user joins the workspace. Polling; deduped by user id. - Trigger **New User (instant)** Triggers when a new user joins the workspace (Slack event team_join). - Action **Add Bookmark** Add a bookmark to a channel. - Action **Add Reaction** Add an emoji reaction to a message. - Action **Add Star** Save a message or file by starring it. - Action **Archive Channel** Archive a channel. - Action **Complete Reminder** Mark a reminder as complete. - Action **Create Canvas** Create a standalone canvas document. - Action **Create Channel** Create a new public or private channel. - Action **Create Channel Canvas** Create a canvas attached to a channel. - Action **Create Reminder** Create a reminder for a user at a specified time. - Action **Delete Canvas** Delete a canvas. - Action **Delete File** Delete a file from the workspace. - Action **Delete Message** Delete a message from a channel by timestamp. - Action **Delete Reminder** Delete a reminder. - Action **Delete Scheduled Message** Cancel a scheduled message before it is sent. - Action **Edit Bookmark** Edit an existing channel bookmark. - Action **Edit Canvas** Edit the content of a canvas. - Action **Find Channel by Name** List channels filtered to locate a channel by name (client filters the returned list). - Action **Find User by Email** Look up a Slack user by their email address. - Action **Get Channel Messages** Fetch the message history of a channel. - Action **Get File Info** Get information about a file. - Action **Get Message Permalink** Get a permanent link to a specific message. - Action **Get Message Reactions** Get the emoji reactions on a message. - Action **Get Team Info** Get information about the workspace. - Action **Get Thread Replies** Get the replies in a message thread. - Action **Get User Info** Get profile information for a Slack user by ID. - Action **Get User Presence** Get a user's current presence status. - Action **Get User Profile** Get a user's profile fields. - Action **Invite User to Channel** Invite one or more users to a channel (comma-separated user IDs). - Action **Join Channel** Join a public channel. - Action **Leave Channel** Leave a channel. - Action **List Bookmarks** List the bookmarks in a channel. - Action **List Channel Members** List the members of a channel. - Action **List Channels** List channels in the workspace (public and private). - Action **List Custom Emojis** List the workspace's custom emojis. - Action **List Files** List files in the workspace, optionally filtered by channel or user. - Action **List Pinned Items** List the items pinned in a channel. - Action **List Scheduled Messages** List messages scheduled to be sent later. - Action **List User Groups** List the workspace's user groups. - Action **List Users** List all users in the workspace. - Action **List User's Channels** List the channels a user is a member of. - Action **Mark Channel Read** Set the read cursor position in a channel. - Action **Pin Message** Pin a message to a channel. - Action **Remove Bookmark** Remove a bookmark from a channel. - Action **Remove Reaction** Remove an emoji reaction from a message. - Action **Remove Star** Remove a star from a message or file. - Action **Remove User from Channel** Remove a member from a channel. - Action **Rename Channel** Rename a channel. - Action **Schedule Message** Schedule a message to be sent to a channel at a future Unix time. - Action **Search Files** Search files across the workspace. - Action **Search Messages** Search messages across the workspace. - Action **Send Direct Message** Open a DM with a user and post a message to it. - Action **Send Ephemeral Message** Send a message in a channel that is visible only to one user. - Action **Send Message** Post a message to a channel, private group, or DM. - Action **Set Channel Purpose** Set the purpose (description) for a channel. - Action **Set Channel Topic** Set the topic for a channel. - Action **Set User Presence** Set the authenticated user's presence status. - Action **Unarchive Channel** Restore an archived channel. - Action **Unpin Message** Remove a pinned message from a channel. - Action **Update Message** Update an existing message in a channel by timestamp. - Action **Upload File** Upload a file and share it to one or more channels. - 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. ## Each app on its own - [ **Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connections/slack) - [ **Lob** Lob makes it easy to seamlessly print and mail letters, postcards, photos, posters and more via a web API.](https://apiant.ai/connections/lob) Reviews ## What our customers say ## More from Slack - [ **Slack to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/slack-to-hubspot) - [ **Slack to Google Sheets** Google Sheets](https://apiant.ai/connect/slack-to-google-sheets) - [ **Slack to Gmail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/slack-to-gmail) - [ **Slack to Google Drive** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/slack-to-google-drive) - [ **Slack to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/slack-to-quickbooks-online) - [ **Slack to Pipedrive** Pipedrive is a sales CRM and pipeline management tool.](https://apiant.ai/connect/slack-to-pipedrive) ## More into Lob - [ **Smsmobileapi to Lob** Smsmobileapi is a tool that uses your own mobile to send and receive SMS, track missed, incoming and...](https://apiant.ai/connect/smsmobileapi-to-lob) - [ **HubSpot to Lob** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-lob) - [ **Salesforce to Lob** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-lob) - [ **Google Sheets to Lob** Google Sheets](https://apiant.ai/connect/google-sheets-to-lob) - [ **Gmail to Lob** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-lob) - [ **Google Calendar to Lob** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-lob) Questions ## Slack and Lob, answered ### ### What can start an automation from Slack? Any of Slack's 15 triggers in the catalog, including New Channel, New Channel (instant), New Channel Member and New File (instant). Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Lob when something happens in Slack? 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. ### ### Can it also run from Lob to Slack? Lob has no triggers in the catalog today, so automations start in Slack. If you need the other direction, ask: your agent reads Lob's API documentation and adds it. ### ### Do I have to build a connector for Slack or Lob? No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running. ### ### Can my AI client use Slack and Lob without building an automation? Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both. ### ### 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.