Stripe
PaymentsPayments infrastructure with pay-as-you-go pricing. Payment Links let you sell without writing code, and Stripe's MCP server lets agents work with the Stripe API and docs.
MCPAPI/CLIFile import
Used by IonBin’s founder Ops
Square
PaymentsIndependent review. IonBin has no partnership with Square and was not paid for this page. Our evaluation is our own, based on public documentation and our research. Product names are trademarks of their owners and are used for identification only. How disclosure works.
Point of sale, online payments and invoices. Square's MCP server (beta) is hosted by Block at mcp.squareup.com and signs in with OAuth scopes; the remote server touches live data only.
Not advice
IonBin provides general information and software comparisons, not tax, legal, accounting or financial advice. Tax and legal rules vary by situation and jurisdiction; consult a qualified professional (CPA, enrolled agent or attorney) before acting.
AI tools can make mistakes. Verify every figure against the original documents and official IRS or state guidance before filing or signing.
Redact Social Security numbers, account numbers and EINs before uploading documents to any AI assistant, and check its data-retention settings. Upload originals only to the filing or signing software.
Best for
- Shops and service businesses taking in-person and online payments
- Asking an AI client about orders, items and customers
Not for
- Testing against live data (use a local server on Sandbox)
- Refunds or changes without a person approving them
Top use cases
- Connect Claude to Square's remote MCP server with OAuth source ↗
- Query customers, orders and items in plain language source ↗
- Test against the Sandbox with a local server source ↗
In depth
MCP server (beta)
Block hosts the remote server at mcp.squareup.com/mcp. It signs in with OAuth and asks only for the scopes you grant. Remote instances only reach production, so run a local server against the Sandbox to test. source ↗
Fees
On the US pricing page, the Free plan lists 2.6% + 15¢ for in-person cards and 3.3% + 30¢ for online and invoice card payments. Plus and Premium list lower rates. Checked 2026-10-18. source ↗
How to use it with AI
How Square connects to each AI platform: native connector or MCP, API through code the agent writes, browser control, or file upload.
| Platform | MCP / connector | API (agent-written code) | Browser | Upload / export |
|---|---|---|---|---|
| Claude (incl. Claude Code) | Not documented Setup guide for Claude.ai and Claude Desktop. A named plugin, skill or CLI does not by itself establish an MCP/native connector pairing. Verify the route and client setup. Square named integration docs ↗Claude (incl. Claude Code) MCP docs ↗ | Not documented Claude (incl. Claude Code): Claude Code edits files and runs commands Square publishes an API, but this pairing still needs network, authentication and execution-scope checks. Square API ↗Claude (incl. Claude Code) docs ↗ | Inferred Claude Code with the Claude in Chrome extension (Chrome, Edge and other Chromium browsers). Square is a web app; the pairing itself is not documented. Claude (incl. Claude Code) browser docs ↗ | Not documented Verify which side exports and which imports, supported formats and permissions. Square's recorded upload/import status is to-verify; Claude (incl. Claude Code)'s file status is yes. These flags do not establish a file-transfer route. Claude (incl. Claude Code) file docs ↗ |
| OpenAI Codex | Not documented Square has an official MCP server and OpenAI Codex supports MCP, but Square's docs don't name this pairing. Auth setup may differ. Square MCP docs ↗OpenAI Codex MCP docs ↗ | Not documented OpenAI Codex: Edits files and runs commands locally; cloud tasks run in isolated workspaces Square publishes an API, but this pairing still needs network, authentication and execution-scope checks. Square API ↗OpenAI Codex docs ↗ | Inferred Only in the ChatGPT desktop app; not in the Codex CLI or IDE extension. Square is a web app; the pairing itself is not documented. OpenAI Codex browser docs ↗ | Not documented Verify which side exports and which imports, supported formats and permissions. Square's recorded upload/import status is to-verify; OpenAI Codex's file status is yes. These flags do not establish a file-transfer route. OpenAI Codex file docs ↗ |
| Google Antigravity | Not documented Square has an official MCP server and Google Antigravity supports MCP, but Square's docs don't name this pairing. Auth setup may differ. Square MCP docs ↗Google Antigravity MCP docs ↗ | Not documented Google Antigravity: Agents edit code and run tasks Square publishes an API, but this pairing still needs network, authentication and execution-scope checks. Square API ↗Google Antigravity docs ↗ | Inferred The /browser guide documents App and CLI support through Chrome DevTools MCP; the overview comparison conflicts on CLI availability. IDE browser features are separate. Square is a web app; the pairing itself is not documented. Google Antigravity browser docs ↗ | Not documented Verify which side exports and which imports, supported formats and permissions. Square's recorded upload/import status is to-verify; Google Antigravity's file status is yes. These flags do not establish a file-transfer route. Google Antigravity file docs ↗ |
Confirmed is reserved for evidence of the specific connection route. The current named integrations include plugins, skills and CLIs, so a named platform alone does not confirm MCP or a native connector. Inferred means each side documents a relevant capability, but no document describes the pairing. Code execution still needs network and credential access; file handling still needs a compatible format and transfer direction. Not documented means the records do not establish the route. IonBin has not tested these pairings. Recorded Oct 18, 2026.
Agent compatibility
MCPAPI/CLI File import?
| Level | Status | Detail / source |
|---|---|---|
| Native connector / MCP | Yes | Official docs ↗ |
| API / CLI | Yes | Official docs ↗ — the server exposes Square's REST API |
| Browser / manual | No | Browser access is recorded alongside a documented programmatic route. |
| File upload / import | To verify | Catalog import not reviewed for this page |
Recorded Oct 18, 2026. Setup and plan limits vary; check the vendor's docs. How levels are assigned.
Appears in these proposed stacks
Connection capabilities to compare
An official MCP server is documented for this tool. These platforms separately document MCP client support: ChatGPT, Claude, Cursor, Gemini (Google), Google Antigravity, Grok, Grok Bot, Lindy, LM Studio, Mistral Vibe, OpenAI Codex. This inventory does not establish compatible transport, authentication or actions for a pairing. Check the connection matrix and linked sources.
Automation hubs to assess for a custom API connection: Gumloop, Make, n8n, Zapier. Verify credentials, supported requests, limits and error handling; no configured integration is implied.
Workflows using this tool
Review
No long-form review yet. Verdict is based on research, not hands-on testing.
Alternatives
PayPal
PaymentsCheckout, invoicing and payouts. PayPal's MCP server runs locally with an access token or remotely with a single sign-in, and supports a Sandbox for testing.
MCPAPI/CLI
Finance