--- title: "Connect Balabook and PostStack - APIANT.ai" description: "When \"New Invoices\" fires in Balabook, your agent runs \"Add a contact\" in PostStack." canonical: "https://apiant.ai/connect/balabook-to-poststack" --- # Connect Balabook and PostStack When **New Invoices** fires in [Balabook](https://apiant.ai/connections/balabook), your agent runs **Add a contact** in [PostStack](https://apiant.ai/connections/poststack), or **Contact Updated (instant)** in PostStack to **Add invoice payment** in Balabook. Describe the whole flow and it is built, tested on every scenario and kept running. Balabook **2** triggers Balabook **26** 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 Balabook 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 Balabook and PostStack can do together ### From Balabook to PostStack - When **New Invoices** in Balabook then **Add a contact** in PostStack - When **New Journal Entries** in Balabook then **Add contacts to segment** in PostStack ### From PostStack to Balabook - When **Contact Updated (instant)** in PostStack then **Add invoice payment** in Balabook - When **New Contact (instant)** in PostStack then **Create Invoice** in Balabook 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 Balabook and PostStack ## Triggers and actions 9 triggers · 57 actions - Trigger **New Invoices** Triggers when a new invoice is created. - Trigger **New Journal Entries** Triggers when a new journal entry is created. - Action **Add bill** Create a bill. - Action **Add credit note** Create a credit note. - Action **Add invoice payment** Record a payment on an invoice. - Action **Add journal entry** Create a journal entry. - Action **Create Account** Creates a new account in your company. - Action **Create Estimate** Creates a new draft estimate in your company. - Action **Create Expense** Creates a new draft expense in your company. - Action **Create Invoice** Creates a new draft invoice in your company. - Action **Create Partner** Creates the partner for the company. - Action **Create Transaction** Creates a new draft transaction in your company. - Action **Delete invoice** Delete an invoice. - Action **Get account** Get an account with amounts. - Action **Get credit note** Returns one credit note with partner, line items, totals and status. - Action **Get invoice** Get an invoice by id. - Action **Get partner** Get a partner by id. - Action **List accounts** List accounts. - Action **List bills** List bills. - Action **List estimates** List estimates. - Action **List invoices** List invoices. - Action **List journal entries** List journal entries. - Action **List transactions** List transactions. - Action **Update account** Update an account. - Action **Update estimate** Update an estimate. - Action **Update expense** Update an expense. - Action **Update invoice** Update an invoice. - Action **Update partner** Update a partner. - 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 - [ **Balabook** Balabook is an accounting software for business owners and accounting firms to help improve the financial...](https://apiant.ai/connections/balabook) - [ **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 Balabook - [ **Balabook to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/balabook-to-hubspot) - [ **Balabook to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/balabook-to-salesforce) - [ **Balabook to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/balabook-to-slack) - [ **Balabook to Google Sheets** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/balabook-to-google-sheets) - [ **Balabook to Gmail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/balabook-to-gmail) - [ **Balabook to Google Calendar** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/balabook-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 ## Balabook and PostStack, answered ### ### What can start an automation from Balabook? Any of Balabook's 2 triggers in the catalog, including New Invoices and New Journal Entries. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in PostStack when something happens in Balabook? 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 Balabook? Yes. When something happens in PostStack, your agent can act in Balabook too. This page covers both directions: PostStack's triggers and Balabook's actions are listed here as well. ### ### Do I have to build a connector for Balabook 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 Balabook 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.