Integration
Connect Square to EchtPost Postcards
When New order fires in Square, your agent runs Create Contact in EchtPost Postcards. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want Square and EchtPost Postcards to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiOne 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.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)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)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)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)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)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)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
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
- New order
Triggered when a new order is created at the specified location.
- New or updated customer
Triggered when a customer is created or updated.
- New payment
Triggered when a new payment is received.
- Add catalog object
Creates a catalog object (item, variation, category, tax, discount, modifier list and more) in the Square catalog.
- Add order
Creates a new Square order at a location, with optional line items, taxes, discounts, service charges and a fulfillment.
- Add payment
Creates a payment: charges a card or payment token, or records a cash or external payment the seller received outside Square.
- Add refund
Refund a payment.
- 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.
- Create customer
Creates a new customer profile.
- Delete catalog object
Deletes a Square catalog object by ID, along with any objects that depend on it (for example an item's variations).
- Delete customer
Deletes a customer profile by ID.
- Find catalog object
Retrieves a catalog object (item, variation, etc.) by ID.
- Find customer
Returns customer details for the specified customer ID.
- Find order
Retrieves an order by ID.
- Find payment
Retrieves a payment by ID.
- List locations
Lists all business locations for the connected Square account.
- List payments
Lists payments for the connected merchant, newest first.
- Search catalog objects
Searches catalog objects by type (ITEM, CATEGORY, etc.).
- Search customers
Searches customer profiles by email, phone, or reference ID.
- Search orders
Searches orders for the specified location(s).
- Update customer
Updates an existing customer profile.
- Update order
Updates an open Square order by adding or replacing fields, or clearing them. Completed or canceled orders cannot be updated.
- Create Contact
Creates a Contact within EchtPost.
- Get Balance
Returns the account's current credit balance.
- Get Contact
Returns a single saved contact by id.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
What our customers say
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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.