--- title: "Connect Common Room and PostStack - APIANT.ai" description: "When \"Custom Fields List\" fires in Common Room, your agent runs \"Add a contact\" in PostStack." canonical: "https://apiant.ai/connect/common-room-to-poststack" --- # Connect Common Room and PostStack When **Custom Fields List** fires in [Common Room](https://apiant.ai/connections/common-room), your agent runs **Add a contact** in [PostStack](https://apiant.ai/connections/poststack), or **Contact Updated (instant)** in PostStack to **Add or Update a Contact Custom Field** in Common Room. Describe the whole flow and it is built, tested on every scenario and kept running. Common Room **2** triggers Common Room **11** actions PostStack **7** triggers PostStack **31** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Common Room and PostStack 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 Common Room and PostStack can do together ### From Common Room to PostStack - When **Custom Fields List** in Common Room then **Add a contact** in PostStack - When **Segment Status List** in Common Room then **Add a segment** in PostStack ### From PostStack to Common Room - When **Contact Updated (instant)** in PostStack then **Add or Update a Contact Custom Field** in Common Room - When **New Contact (instant)** in PostStack then **Add Common Room Contact to Segment** in Common Room 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 Common Room and PostStack ## Triggers and actions 9 triggers · 42 actions - Trigger **Custom Fields List** Triggers when a new contact custom field is added to the Common Room community. - Trigger **Segment Status List** Triggers when a new status is added to the selected Common Room segment. - Action **Add Activity From Third Party Source** Adds an activity from a third-party system to a Common Room API signal source, or updates an activity previously added with the same activity ID and type. - Action **Add Common Room Contact to Segment** Adds one or more existing Common Room contacts to an existing segment, identified by email, Twitter, GitHub or LinkedIn, optionally setting their segment status. - Action **Add Organization From Third Party Source** Adds an organization to a Common Room API source, or updates the organization previously added with the same domain. - Action **Add or Update a Contact Custom Field** Sets the value of a contact custom field on a Common Room contact, creating or updating the contact in an API signal source. - Action **Add tag** Creates a tag in Common Room, or returns the existing tag if one with the same name already exists. - Action **Delete tag** Deletes a tag and removes it from everywhere it was applied. A tag that segments or workflows still use can't be deleted. - Action **Get tag** Returns a Common Room tag by its id, including its name, description and the entity types it may be assigned to. - Action **List activity types** Returns every activity type defined in your Common Room community, with its id and display name. - Action **List segments** Returns all segments in the Common Room community, with each segment's id and name. - Action **List tags** Returns all user-defined tags in your Common Room community, with their names, descriptions and the record types they can be applied to. - Action **Update tag** Renames a tag or changes its description. A deleted tag is restored when it is updated. - Trigger **Contact Deleted (instant)** Fires when a contact is deleted (event: contact.deleted). - Trigger **Contact Updated (instant)** Fires when a contact is updated (event: contact.updated). - Trigger **Email Bounced (instant)** Fires when an email bounces (event: email.bounced). - Trigger **Email Delivered (instant)** Fires when an email is delivered (event: email.delivered). - Trigger **New Contact (instant)** Fires when a contact is created (event: contact.created). - Trigger **New Inbound Email** Polls for newly received inbound emails. - Trigger **New Sent Email (instant)** Fires when an email is sent (event: email.sent). - Action **Add a broadcast** Create a new marketing broadcast. - Action **Add a contact** Create a new contact. - Action **Add a segment** Create a new manual contact segment. - Action **Add a template** Create a new email template. - Action **Add contacts to segment** Add contacts to an existing segment. - Action **Add suppression** Add an address to the suppression list. - Action **Cancel broadcast** Cancel an in-flight broadcast. - Action **Cancel email** Cancel a scheduled or queued email before it sends. - Action **Delete a contact** Delete a contact. - Action **Delete a template** Delete an email template. - Action **Get a contact** Fetch one contact by ID. - Action **Get a template** Fetch one email template by ID. - Action **Get broadcast** Retrieve one broadcast by its public id, including the HTML and text bodies that the list endpoint omits. - Action **Get email** Fetch one sent or queued email by ID. - Action **Get email events** Get the delivery event timeline for one email. - Action **Get inbound email** Fetch one received inbound email by ID. - Action **Import contacts** Bulk-import a CSV list of contacts. - Action **List broadcasts** List marketing broadcasts. - Action **List contacts** List contacts in the account. - Action **List emails** List sent, queued, and scheduled emails. - Action **List inbound emails** List emails received via inbound parsing. - Action **List segments** List contact segments. - Action **List suppressed addresses** List addresses on the suppression list. - Action **List templates** List email templates. - Action **Send an email** Send a transactional email through PostStack. - Action **Send broadcast** Start sending a broadcast to its recipients. - Action **Send emails in batch** Send up to 100 emails in a single request. - Action **Update a contact** Update an existing contact's fields. - Action **Update a template** Update an email template, creating a new version. - Action **Update email** Reschedule a queued email's send time. - Action **Validate email address** Check whether an email address is valid and deliverable. ## Each app on its own - [ **Common Room** Common Room is the intelligent community growth platform that helps you deepen relationships, build better...](https://apiant.ai/connections/common-room) - [ **PostStack** EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics](https://apiant.ai/connections/poststack) Reviews ## What our customers say ## More from Common Room - [ **Common Room to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/common-room-to-hubspot) - [ **Common Room to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/common-room-to-salesforce) - [ **Common Room to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/common-room-to-slack) - [ **Common Room to Google Sheets** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/common-room-to-google-sheets) - [ **Common Room to Gmail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/common-room-to-gmail) - [ **Common Room to Google Calendar** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/common-room-to-google-calendar) ## More into PostStack - [ **HubSpot to PostStack** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-poststack) - [ **Google Sheets to PostStack** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-poststack) - [ **Gmail to PostStack** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-poststack) - [ **Google Calendar to PostStack** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-poststack) - [ **Google Drive to PostStack** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-poststack) - [ **Mailchimp to PostStack** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-poststack) Questions ## Common Room and PostStack, answered ### ### What can start an automation from Common Room? Any of Common Room's 2 triggers in the catalog, including Custom Fields List and Segment Status List. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in PostStack when something happens in Common Room? Any of PostStack's 31 actions, including Send an email, Send broadcast, Send emails in batch and Update a contact. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from PostStack to Common Room? Yes. When something happens in PostStack, your agent can act in Common Room too. This page covers both directions: PostStack's triggers and Common Room's actions are listed here as well. ### ### Do I have to build a connector for Common Room or PostStack? 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 Common Room and PostStack 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.