--- title: "Connect Square and Stax - APIANT.ai" description: "When \"New order\" fires in Square, your agent runs \"Create Customer\" in Stax, or \"List Payment\" in Stax to \"Add payment\" in Square." canonical: "https://apiant.ai/connect/square-to-stax" --- # Connect Square and Stax When **New order** fires in [Square](https://apiant.ai/connections/square), your agent runs **Create Customer** in [Stax](https://apiant.ai/connections/stax), or **List Payment** in Stax to **Add payment** in Square. Describe the whole flow and it is built, tested on every scenario and kept running. Square **3** triggers Square **19** actions Stax **1** trigger Stax **17** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Square and Stax 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 Square and Stax can do together ### From Square to Stax - When **New order** in Square then **Create Customer** in Stax - When **New or updated customer** in Square then **Update customer** in Stax ### From Stax to Square - When **List Payment** in Stax then **Add payment** in Square - When **List Payment** in Stax then **Add order** in Square 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 Square and Stax ## Triggers and actions 4 triggers · 36 actions - Trigger **New order** Triggered when a new order is created at the specified location. - Trigger **New or updated customer** Triggered when a customer is created or updated. - Trigger **New payment** Triggered when a new payment is received. - Action **Add catalog object** Creates a catalog object (item, variation, category, tax, discount, modifier list and more) in the Square catalog. - Action **Add order** Creates a new Square order at a location, with optional line items, taxes, discounts, service charges and a fulfillment. - Action **Add payment** Creates a payment: charges a card or payment token, or records a cash or external payment the seller received outside Square. - Action **Add refund** Refund a payment. - Action **Cancel payment** Cancels (voids) a Square payment that is still in the APPROVED status, i.e. a delayed-capture payment that has not been completed. - Action **Create customer** Creates a new customer profile. - Action **Delete catalog object** Deletes a Square catalog object by ID, along with any objects that depend on it (for example an item's variations). - Action **Delete customer** Deletes a customer profile by ID. - Action **Find catalog object** Retrieves a catalog object (item, variation, etc.) by ID. - Action **Find customer** Returns customer details for the specified customer ID. - Action **Find order** Retrieves an order by ID. - Action **Find payment** Retrieves a payment by ID. - Action **List locations** Lists all business locations for the connected Square account. - Action **List payments** Lists payments for the connected merchant, newest first. - Action **Search catalog objects** Searches catalog objects by type (ITEM, CATEGORY, etc.). - Action **Search customers** Searches customer profiles by email, phone, or reference ID. - Action **Search orders** Searches orders for the specified location(s). - Action **Update customer** Updates an existing customer profile. - Action **Update order** Updates an open Square order by adding or replacing fields, or clearing them. Completed or canceled orders cannot be updated. - Trigger **List Payment** Triggers when a new payment transaction is recorded in Stax. - Action **Capture payment** Captures funds from a pre-authorized Stax transaction, turning the pre-authorization into a completed charge. Returns the updated transaction. - Action **Create Customer** Creates a customer record on the Stax merchant account and returns the new customer. - Action **Create Item** Creates an item in the merchant's Stax catalog and returns the new catalog item. - Action **Create Scheduled Invoice** Creates a scheduled invoice that automatically generates invoices for a customer on a one-time or recurring schedule, with optional autopay. Returns the new schedule. - Action **Delete Catalog Item** Deletes a catalog item from Stax. - Action **Delete payment method** Deletes a customer's saved payment method in Stax and returns the deleted payment method. - Action **Delete Scheduled Invoice** Deletes a recurring invoice schedule so it stops generating invoices. - Action **Find Customers** Searches your Stax customers by name, email, company, phone, address or other details and returns the matching customers. - Action **Find Invoices** Returns the invoices on the Stax merchant account that match the search criteria you supply, such as keywords, customer name, company, email, price, schedule or payment method. - Action **Find Items** Searches the merchant's catalog for items matching a name, code, price or other criteria and returns the matching items. - Action **Find Payment Methods** Returns all saved payment methods (cards and bank accounts) for a Stax customer. - Action **Find Payments** Returns the payments and other transactions on the merchant account that match the search criteria, such as keywords, customer, date range, amount, type or status. - Action **Make a Payment** Charges a customer's saved payment method for the amount you specify, or places a pre-authorization to capture later. Returns the resulting transaction. - Action **Refund payment** Refunds all or part of a settled Stax payment transaction back to the customer. - Action **Update customer** Updates an existing customer's contact details, address, notes and options in Stax, and returns the updated customer. - Action **Update invoice** Updates an existing unpaid invoice's customer, amounts, line items, memos and payment options, and returns the updated invoice. Fully paid invoices cannot be edited. - Action **Void payment** Voids a payment transaction in Stax before it settles, cancelling the charge. ## Each app on its own - [ **Square** Square is a commerce platform for payments, point of sale, orders, customers, catalog, and invoices.](https://apiant.ai/connections/square) - [ **Stax** Stax makes it easy to accept payments in-person and online and provides businesses with the tools they need...](https://apiant.ai/connections/stax) Reviews ## What our customers say ## More from Square - [ **Square to Webflow** Webflow is a professional website builder and CMS for designing, building, and launching responsive...](https://apiant.ai/connect/square-to-webflow) - [ **Square to EchtPost Postcards** With EchtPost, you write the postcard digitally in your web browser.](https://apiant.ai/connect/square-to-echtpost-postcards) - [ **Square to Reverse Contact** Reverse Contact finds the LinkedIn profiles of your prospects thanks to their email, and recovers all the...](https://apiant.ai/connect/square-to-reverse-contact) - [ **Square to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/square-to-stripe) - [ **Square to Trello** Trello is a visual collaboration tool that organizes projects into boards, lists, and cards.](https://apiant.ai/connect/square-to-trello) - [ **Square to Zoom** Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based...](https://apiant.ai/connect/square-to-zoom) ## More into Stax - [ **HubSpot to Stax** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-stax) - [ **Salesforce to Stax** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-stax) - [ **Slack to Stax** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-stax) - [ **Google Sheets to Stax** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-stax) - [ **Gmail to Stax** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-stax) - [ **Google Calendar to Stax** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-stax) Questions ## Square and Stax, answered ### ### What can start an automation from Square? Any of Square's 3 triggers in the catalog, including New order, New or updated customer and New payment. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Stax when something happens in Square? Any of Stax's 17 actions, including Create Customer, Create Item, Create Scheduled Invoice and Update customer. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Stax to Square? Yes. When something happens in Stax, your agent can act in Square too. This page covers both directions: Stax's triggers and Square's actions are listed here as well. ### ### Do I have to build a connector for Square or Stax? 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 Square and Stax 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.