Square Automation

Square Automation via Rube MCP

Automate Square payment processing, order management, and invoicing through Composio's Square toolkit via Rube MCP.

Toolkit docs: composio.dev/toolkits/square

Prerequisites

• Rube MCP must be connected (RUBE_SEARCH_TOOLS available)
• Active Square connection via RUBE_MANAGE_CONNECTIONS with toolkit square
• Always call RUBE_SEARCH_TOOLS first to get current tool schemas

Setup

Get Rube MCP: Add https://rube.app/mcp as an MCP server in your client configuration. No API keys needed — just add the endpoint and it works.

• Verify Rube MCP is available by confirming RUBE_SEARCH_TOOLS responds
• Call RUBE_MANAGE_CONNECTIONS with toolkit square
• If connection is not ACTIVE, follow the returned auth link to complete Square OAuth
• Confirm connection status shows ACTIVE before running any workflows

Core Workflows

1. List and Monitor Payments

When to use: User wants to view payment history or check payment status

Tool sequence:

• SQUARE_LIST_PAYMENTS - Retrieve payments with optional filters [Required]
• SQUARE_CANCEL_PAYMENT - Cancel a pending payment if needed [Optional]

Key parameters:

• begin_time / end_time: RFC 3339 timestamps for date range filtering
• sort_order: 'ASC' or 'DESC' for chronological ordering
• cursor: Pagination cursor from previous response
• location_id: Filter payments by specific location

Pitfalls:

• Timestamps must be RFC 3339 format (e.g., '2024-01-01T00:00:00Z')
• Pagination required for large result sets; follow cursor until absent
• Only pending payments can be cancelled; completed payments require refunds
• SQUARE_CANCEL_PAYMENT requires exact payment_id from list results

2. Search and Manage Orders

When to use: User wants to find orders by criteria or update order details

Tool sequence:

• SQUARE_LIST_LOCATIONS - Get location IDs for filtering [Prerequisite]
• SQUARE_SEARCH_ORDERS - Search orders with filters [Required]
• SQUARE_RETRIEVE_ORDER - Get full details of a specific order [Optional]
• SQUARE_UPDATE_ORDER - Modify order state or details [Optional]

Key parameters:

• location_ids: Array of location IDs to search within (required for search)
• query: Search filter object with date ranges, states, fulfillment types
• order_id: Specific order ID for retrieve/update operations
• cursor: Pagination cursor for search results

Pitfalls:

• location_ids is required for SEARCH_ORDERS; get IDs from LIST_LOCATIONS first
• Order states include: OPEN, COMPLETED, CANCELED, DRAFT
• UPDATE_ORDER requires the current version field to prevent conflicts
• Search results are paginated; follow cursor until absent

3. Manage Locations

When to use: User wants to view business locations or get location details

Tool sequence:

• SQUARE_LIST_LOCATIONS - List all business locations [Required]

Key parameters:

• No required parameters; returns all accessible locations
• Response includes id, name, address, status, timezone

Pitfalls:

• Location IDs are required for most other Square operations (orders, payments)
• Always cache location IDs after first retrieval to avoid redundant calls
• Inactive locations may still appear in results; check status field

4. Invoice Management

When to use: User wants to list, view, or cancel invoices

Tool sequence:

• SQUARE_LIST_LOCATIONS - Get location ID for filtering [Prerequisite]
• SQUARE_LIST_INVOICES - List invoices for a location [Required]
• SQUARE_GET_INVOICE - Get detailed invoice information [Optional]
• SQUARE_CANCEL_INVOICE - Cancel a scheduled or unpaid invoice [Optional]

Key parameters:

• location_id: Required for listing invoices
• invoice_id: Required for get/cancel operations
• cursor: Pagination cursor for list results
• limit: Number of results per page

Pitfalls:

• location_id is required for LIST_INVOICES; resolve via LIST_LOCATIONS first
• Only SCHEDULED, UNPAID, or PARTIALLY_PAID invoices can be cancelled
• CANCEL_INVOICE requires the invoice version to prevent race conditions
• Cancelled invoices cannot be uncancelled

Common Patterns

ID Resolution

Location name -> Location ID:

1. Call SQUARE_LIST_LOCATIONS
2. Find location by name in response
3. Extract id field (e.g., 'L1234ABCD')

Order lookup:

1. Call SQUARE_SEARCH_ORDERS with location_ids and query filters
2. Extract order_id from results
3. Use order_id for RETRIEVE_ORDER or UPDATE_ORDER

Pagination

• Check response for cursor field
• Pass cursor value in next request's cursor parameter
• Continue until cursor is absent or empty
• Use limit to control page size

Date Range Filtering

• Use RFC 3339 format: 2024-01-01T00:00:00Z
• For payments: begin_time and end_time parameters
• For orders: Use query filter with date_time_filter
• All timestamps are in UTC

Known Pitfalls

ID Formats:

• Location IDs are alphanumeric strings (e.g., 'L1234ABCD')
• Payment IDs and Order IDs are longer alphanumeric strings
• Always resolve location names to IDs before other operations

Versioning:

• UPDATE_ORDER and CANCEL_INVOICE require current version field
• Fetch the resource first to get its current version
• Version mismatch returns a 409 Conflict error

Rate Limits:

• Square API has per-endpoint rate limits
• Implement backoff for bulk operations
• Pagination should include brief delays for large datasets

Response Parsing:

• Responses may nest data under data key
• Money amounts are in smallest currency unit (cents for USD)
• Parse defensively with fallbacks for optional fields

Quick Reference

| Task | Tool Slug | Key Params |

|------|-----------|------------|

| List payments | SQUARE_LIST_PAYMENTS | begin_time, end_time, location_id, cursor |

| Cancel payment | SQUARE_CANCEL_PAYMENT | payment_id |

| Search orders | SQUARE_SEARCH_ORDERS | location_ids, query, cursor |

| Get order | SQUARE_RETRIEVE_ORDER | order_id |

| Update order | SQUARE_UPDATE_ORDER | order_id, version |

| List locations | SQUARE_LIST_LOCATIONS | (none) |

| List invoices | SQUARE_LIST_INVOICES | location_id, cursor |

| Get invoice | SQUARE_GET_INVOICE | invoice_id |

| Cancel invoice | SQUARE_CANCEL_INVOICE | invoice_id, version |

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