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What do you want Square and Shift4 to do together?
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Claude Code
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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)Example flows
What Square can start in Shift4
When New order in Square
then Add card in Shift4
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 Shift4
Triggers and actions 3 triggers · 40 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.
- Add card
Saves a credit or debit card to an existing Shift4 customer, either from a card token / successful charge, or from full card details.
- Add charge
Creates a new charge to a customer or card.
- Add customer
Creates a new customer in Shift4, optionally saving a card to them as their default card.
- Add plan
Creates a new subscription plan that customers can be subscribed to.
- Add refund
Refunds an existing charge in full or in part, returning the funds to the card that was charged.
- Add subscription
Creates a subscription that bills a customer automatically according to a plan.
- Delete card
Deletes a saved card from a Shift4 customer. If the deleted card was the customer's default, the most recently added card becomes the new default.
- Delete customer
Deletes an existing Shift4 customer.
- Delete plan
Deletes a plan by ID.
- Delete subscription
Cancels/deletes an existing subscription by ID.
- Get charge
Fetches a charge by ID.
- Get customer
Fetches a customer by ID.
- Get dispute
Fetches a dispute by ID.
- Get plan
Fetches a plan by ID.
- Get refund
Retrieves an existing Shift4 refund by its id.
- Get subscription
Fetches a subscription by ID.
- List cards
Lists the saved cards of a Shift4 customer, most recently created first.
- List refunds
Returns all refunds.
- Update charge
Updates an existing Shift4 charge's customer, description, shipping, billing, fraud status or metadata. Fields left blank are unchanged.
- Update customer
Updates an existing Shift4 customer. Any field left blank is left unchanged.
- Update subscription
Updates an existing subscription. Any field left blank is left unchanged.
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 Shift4, 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 Shift4 when something happens in Square?
Any of Shift4's 21 actions, including Update charge, Update customer, Update subscription and Add card. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Shift4 to Square?
Shift4 has no triggers in the catalog today, so automations start in Square. If you need the other direction, ask: your agent reads Shift4's API documentation and adds it.
Do I have to build a connector for Square or Shift4?
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.
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.