--- title: "Connect Square to EchtPost Postcards - APIANT.ai" description: "When \"New order\" fires in Square, your agent runs \"Create Contact\" in EchtPost Postcards." canonical: "https://apiant.ai/connect/square-to-echtpost-postcards" --- # Connect Square to EchtPost Postcards When **New order** fires in [Square](https://apiant.ai/connections/square), your agent runs **Create Contact** in [EchtPost Postcards](https://apiant.ai/connections/echtpost-postcards). Describe the whole flow and it is built, tested on every scenario and kept running. Square **3** triggers Square **19** actions EchtPost Postcards **3** 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 EchtPost Postcards 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) Square knows who bought what and when; EchtPost Postcards turns those buyers into real printed mail. Joining them means a new Square order, payment or customer record can become a saved EchtPost contact with the right address, and you can read your EchtPost credit balance before counting on a send. Example flows ## What Square can start in EchtPost Postcards - When **New order** in Square then **Create Contact** in EchtPost Postcards - When **New or updated customer** in Square then **Get Contact** in EchtPost Postcards 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 EchtPost Postcards ## Triggers and actions 3 triggers ยท 22 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. - Action **Create Contact** Creates a Contact within EchtPost. - Action **Get Balance** Returns the account's current credit balance. - Action **Get Contact** Returns a single saved contact by id. ## 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) - [ **EchtPost Postcards** With EchtPost, you write the postcard digitally in your web browser.](https://apiant.ai/connections/echtpost-postcards) 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 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) - [ **Square to Twilio** Cloud communications platform for sending SMS/MMS messages, making and managing voice calls, and looking up...](https://apiant.ai/connect/square-to-twilio) ## More into EchtPost Postcards - [ **Stripe to EchtPost Postcards** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/stripe-to-echtpost-postcards) - [ **timeBuzzer to EchtPost Postcards** timeBuzzer is a simple time tracker and timesheet app to track hours worked across projects in real time.](https://apiant.ai/connect/timebuzzer-to-echtpost-postcards) - [ **HubSpot to EchtPost Postcards** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-echtpost-postcards) - [ **Salesforce to EchtPost Postcards** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-echtpost-postcards) - [ **Slack to EchtPost Postcards** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-echtpost-postcards) - [ **Google Sheets to EchtPost Postcards** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-echtpost-postcards) Questions ## Square and EchtPost Postcards, answered ### ### Can a postcard go out automatically when someone pays in Square? The EchtPost actions here cover creating a contact, reading a saved contact and checking your credit balance, so a Square payment or order can file the buyer as an EchtPost contact ready for a mailing. Sending the card itself is still done from EchtPost. ### ### How do I avoid saving a contact with no usable address? The agent can look up the full customer profile in Square first and only create the EchtPost contact when a mailing address is present. It tests every scenario, including orders and payments with no address on the customer record. ### ### 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 EchtPost Postcards when something happens in Square? Any of EchtPost Postcards's 3 actions, including Create Contact, Get Balance and Get Contact. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from EchtPost Postcards to Square? EchtPost Postcards has no triggers in the catalog today, so automations start in Square. If you need the other direction, ask: your agent reads EchtPost Postcards's API documentation and adds it. ### ### Do I have to build a connector for Square or EchtPost Postcards? 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 EchtPost Postcards 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.