--- title: "Connect PassEngine and PostStack - APIANT.ai" description: "When \"New Client\" fires in PassEngine, your agent runs \"Add a contact\" in PostStack." canonical: "https://apiant.ai/connect/passengine-to-poststack" --- # Connect PassEngine and PostStack When **New Client** fires in [PassEngine](https://apiant.ai/connections/passengine), your agent runs **Add a contact** in [PostStack](https://apiant.ai/connections/poststack), or **Contact Updated (instant)** in PostStack to **Send pass email** in PassEngine. Describe the whole flow and it is built, tested on every scenario and kept running. PassEngine **4** triggers PassEngine **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 PassEngine 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 PassEngine and PostStack can do together ### From PassEngine to PostStack - When **New Client** in PassEngine then **Add a contact** in PostStack - When **New Pass** in PassEngine then **Add contacts to segment** in PostStack ### From PostStack to PassEngine - When **Contact Updated (instant)** in PostStack then **Send pass email** in PassEngine - When **New Contact (instant)** in PostStack then **Create Client** in PassEngine 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 PassEngine and PostStack ## Triggers and actions 11 triggers · 42 actions - Trigger **New Client** Triggers when a new client is created. - Trigger **New Pass** Triggers when a new pass is created in PassEngine. - Trigger **Pass Scanned** Triggers each time a pass is successfully scanned, with the pass code, scan result, location and the operator who scanned it. - Trigger **Pass Status Changed** Triggers when a pass status changes (active, used, expired, revoked). - Action **Activate Pass** Reactivates a pass, setting its status back to active and notifying wallet apps. - Action **Create Client** Creates a client (customer) in PassEngine with a name and optional email, phone and internal notes. - Action **Create Pass** Creates a new single-use or multi-use pass, optionally attached to a client and emailed to a recipient. Returns the new pass with its code and public link. - Action **Get client** Returns a single client (customer) by ID, including their name, email, phone and notes. - Action **Get pass** Returns a pass by its ID, including its custom fields, attached client, recent email deliveries and public URL. - Action **List clients** Returns the clients in your PassEngine account, optionally filtered by name, email or phone. - Action **List passes** Returns the passes in your PassEngine account, optionally filtered by name/code text or status. - Action **Revoke Pass** Revokes a pass so it can no longer be scanned, and notifies wallet apps of the change. - Action **Scan Pass** Scans (redeems) a pass by its code, validating its status, validity dates and usage limits, and records the scan. Returns whether the scan succeeded and, if not, why. - Action **Send pass email** Emails an existing pass to a recipient. Returns the queued email delivery with its status. - Action **Update Pass** Updates an existing pass's label, note, status, scan limit, validity dates or custom fields. Changing the status notifies subscribers that the pass status changed. - 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 - [ **PassEngine** PassEngine is a platform for creating and managing virtual membership cards and QR passes for events...](https://apiant.ai/connections/passengine) - [ **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 PassEngine - [ **PassEngine to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/passengine-to-salesforce) - [ **PassEngine to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/passengine-to-slack) - [ **PassEngine to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/passengine-to-stripe) - [ **PassEngine to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/passengine-to-shopify) - [ **PassEngine to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/passengine-to-quickbooks-online) - [ **PassEngine to Pipedrive** Pipedrive is a sales CRM and pipeline management tool.](https://apiant.ai/connect/passengine-to-pipedrive) ## 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](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 ## PassEngine and PostStack, answered ### ### What can start an automation from PassEngine? Any of PassEngine's 4 triggers in the catalog, including New Client, New Pass, Pass Status Changed and Pass Scanned. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in PostStack when something happens in PassEngine? 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 PassEngine? Yes. When something happens in PostStack, your agent can act in PassEngine too. This page covers both directions: PostStack's triggers and PassEngine's actions are listed here as well. ### ### Do I have to build a connector for PassEngine 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 PassEngine 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.