Square MCP
Manage Square payments, customers, orders, and refunds for point-of-sale and online commerce.
Overview
| Catalog ID | mcp-square |
| Category | payments |
| Auth method | OAuth |
| Blast radius | high |
| Trust | Verified — published by cendriix |
| Version | 1.0.0 |
| Regions | us-east-1 |
Tools
| Tool | Description |
|---|---|
list_payments | List Square payments. |
create_payment | Create a payment. |
list_customers | List customers. |
create_refund | Create a refund. |
get_order | Get order details. |
Tool parameters
list_payments
List Square payments.
| Parameter | Type | Description | |
|---|---|---|---|
begin_time | string | optional | Start time |
end_time | string | optional | End time |
create_payment
Create a payment.
| Parameter | Type | Description | |
|---|---|---|---|
source_id | string | required | Payment source ID |
amount_money | object | required | Amount {amount, currency} |
idempotency_key | string | required | Idempotency key |
list_customers
List customers.
| Parameter | Type | Description | |
|---|---|---|---|
limit | integer | optional | Max results |
create_refund
Create a refund.
| Parameter | Type | Description | |
|---|---|---|---|
payment_id | string | required | Payment ID |
amount_money | object | required | Refund amount |
idempotency_key | string | required | Idempotency key |
get_order
Get order details.
| Parameter | Type | Description | |
|---|---|---|---|
order_id | string | required | Order ID |
Installing
- In Cendriix, go to Settings → MCPs
- Find Square and click Install
- Click Authorize after installing. Cendriix completes the OAuth flow with the provider and refreshes tokens automatically — you never paste a long-lived secret.
- Click Test Connection to run a health check and list available tools
Authentication. Click Authorize after installing. Cendriix completes the OAuth flow with the provider and refreshes tokens automatically — you never paste a long-lived secret.
Blast radius
This MCP is classified high. This MCP can modify infrastructure or reach sensitive data. High-blast-radius tool calls require explicit approval when your organisation enables approval gates in Policies.
Every tool invocation is recorded in your Audit Log. You can remove this MCP at any time from Settings → MCPs, which revokes tool access immediately.
Further reading
- MCP Marketplace — browse and install MCPs
- Policies & Guardrails — approval gates and blast radius
- Audit Log — review tool invocations
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