6 Best AI Automation Tools for Square in 2026
Square automates the transaction. Invoices go out on a schedule, receipts send themselves, and Square Marketing will run a campaign on a trigger it knows about. All of that works, and all of it lives inside Square.
The work that does not is the conversation around the money: the customer asking why they were charged, the invoice that needs a second chase, the question about what last month actually looked like. Below are six tools that automate Square, ranked by how much they take off your plate.
TL;DR: The best AI automation tool for Square for most people is Carly. You connect Square once and then chase invoices, answer customer email and ask about the numbers by email or text. For wiring Square into a long tail of other apps, Zapier or Make.
1. Carly
Carly is an AI agent with its own real email address that connects to Square and thousands of other apps. You write to it in plain language and it does the work:
- “Which invoices are unpaid past 30 days? Draft a chase for each from my business address.”
- “A customer is asking about a charge on the 3rd. Find it and draft the reply.”
- “How did takings compare to last month, and which days were the difference?”
What makes it different: Square’s automation acts on transactions inside Square. Carly reads the Gmail and Outlook mailboxes where customers actually ask about them, so the answer to a billing question gets drafted with the transaction already looked up, rather than you switching tabs.
Best for: Owner-operators fielding payment questions between everything else.
Pricing: Free Zapier-style workflows; AI agents from $35/month
2. Square invoices, receipts and Marketing
Square sends recurring invoices, issues receipts automatically, and runs Square Marketing campaigns off customer activity it records itself.
What makes it different from Carly: Every trigger is a Square event and every action is a Square action. An email arriving is neither. Carly starts from the inbox and looks the transaction up, which is the direction the work actually flows.
Best for: Recurring billing and receipts on a known schedule.
Pricing: Included with Square, per-transaction fees apply
3. Zapier
Zapier connects Square to thousands of apps with trigger-action Zaps, plus AI steps for drafting and parsing.
What makes it different from Carly: Every Zap is plumbing you build and maintain, and the triggers are fixed events rather than plain-language requests. Carly does the wiring for you. See Zapier alternatives.
Best for: Pushing Square events out into a long tail of niche apps.
Pricing: Free plan; paid from ~$19.99/month
4. Make
Make is a visual automation platform with branching, loops and data transforms across Square and thousands of other services.
What makes it different from Carly: More capable than Zapier on complex scenarios, at the cost of a canvas you build and debug. Carly trades the canvas for a sentence. See Make alternatives.
Best for: Technical users who want fine control over multi-step Square scenarios.
Pricing: Free plan; paid from ~$12/month
5. n8n
n8n is open-source and self-hostable with AI and agent nodes, and it is the usual answer when the data cannot leave your own infrastructure.
What makes it different from Carly: The most flexible and private option, and you host, build and maintain every part of it. Carly is managed and conversational. See n8n alternatives.
Best for: Developer-leaning teams that want Square automations they run themselves.
Pricing: Free self-hosted; cloud from ~$20/month
6. The Square API and a script
Square’s API covers payments, invoices and customers, so a service of your own can read and act on them.
What makes it different from Carly: It is a codebase you now own, with auth to rotate and failures to notice, and no AI in it unless you add one. Carly gets you the same outcomes from a plain-language message.
Best for: Engineering teams with somewhere to run it.
Pricing: Free, plus your time
Square Automation Tools Compared
| Tool | Plain-language (no builder) | Works from email or text | Reaches past Square | Price |
|---|---|---|---|---|
| Carly | Yes | Yes | Yes, thousands of apps | From $35/mo |
| Square native | No | No | Square and connected apps | Included with Square, per-transaction fees apply |
| Zapier | No (builder) | No | Yes | Free; from ~$19.99/mo |
| Make | No (builder) | No | Yes | Free; from ~$12/mo |
| n8n | No (builder) | No | Yes | Free self-hosted; ~$20/mo cloud |
| Square API script | No (code) | No | Yes | DIY |
FAQ
Does Square have built-in automation? Yes, for money movement. Recurring invoices, automatic receipts and Marketing campaigns all run natively on Square’s own events. Anything that starts with a customer email is outside it.
What is the best way to automate Square with AI? For hands-off work, Carly: you describe the outcome and it acts in Square, pulling context from your email and calendar as it goes. For trigger-action plumbing across many apps, Zapier or Make.
Can Carly answer customer billing questions from Square data? Yes. It reads the question in your inbox, looks up the transaction in Square, and drafts the reply from the address the customer wrote to, held for approval unless you say otherwise.
How do I connect Square to Carly? Open carlyassistant.com/integrations, find Square and authorize it. Carly can then read payments and invoices alongside every mailbox you connect.
More: Claude + Square · Square MCP · Best AI automation tools for Stripe · How to automate work with AI agents
Automate other tools: Gmail · Google Calendar · Google Tasks · Pipedrive
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"Before Carly, I relied on a Calendly link, but the whole process felt impersonal and not very professional. Carly changed that by handling all the back-and-forth, so I'm no longer stuck in endless email threads trying to line up schedules.
Now Carly reaches out to candidates, shares my real-time availability, lets them pick a slot, then sends a Zoom link and drops it straight into my calendar. She sends reminders to both of us before each call, which has significantly reduced no-shows and last-minute confusion.
On top of scheduling, Carly acts like a full executive assistant, sending me my schedule the night before so I can prepare for each call. It reminds me of the old x.ai assistant, but Carly is noticeably smarter, faster, and better suited to my healthcare recruitment business."
