Automate Notion & Square

Stop paying for mismatched spreadsheets. Sync data between Notion and Square in real-time, so you can manage your operations without the busywork.

Get This Workflow Built

Custom API Integration

Secure Data Transfer

Done-For-You Setup

How the Data Flows

graph LR
    subgraph Source ["Notion"]
        T1(["Data Source File Properties"])
    end
    
    subgraph Middleware ["Enterprise Integration Core"]
        W[CRON API
Poller] --> V{Validation
& Auth}
        V -->|Fail| DLQ[Dead Letter
Queue]
        V -->|Pass| Map[Data Mapping
& Transformation]
        Map --> Retry[Rate Limiting
& Retries]
    end
    
    subgraph Target ["Square"]
        A1(["Add Customer to Group"])
    end

    T1 -->|JSON Payload| W
    Retry -->|Authenticated API POST| A1

    style Source fill:transparent,stroke:#cbd5e1,stroke-dasharray: 5 5
    style Target fill:transparent,stroke:#cbd5e1,stroke-dasharray: 5 5
    style Middleware fill:#f8fafc,stroke:#94a3b8,stroke-width:2px
    style T1 fill:#3b82f6,stroke:#fff,stroke-width:2px,color:#fff
    style W fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style V fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style Map fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style Retry fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style DLQ fill:#ef4444,stroke:#fff,stroke-width:1px,color:#fff
    style A1 fill:#e11d48,stroke:#fff,stroke-width:2px,color:#fff

When Notion and Square operate independently, sales teams face significant challenges in tracking payment statuses. For instance, if a customer pays via Square, that transaction data must be manually entered into Notion for project management. This leads to discrepancies in payment records and project timelines, as the finance team spends hours cross-referencing invoices and payment confirmations. Consequently, this manual entry not only wastes time but also increases the likelihood of human error, impacting overall project delivery.

Top Ways to Automate Notion & Square

Automated Invoice Generation: Instantly create and send invoices in Square based on project milestones tracked in Notion, ensuring accurate billing and timely payments without manual input.
Real-Time Sales Tracking: Sync sales data from Square directly into Notion, allowing teams to monitor performance metrics and customer interactions in one centralized workspace.
Client Management Automation: Automatically update client profiles in Notion when transactions occur in Square, ensuring that your team always has the latest information at their fingertips for better customer engagement.

How to Build the Notion → Square Sync

Set up a webhook in Notion to listen for changes in the database where payment statuses are recorded. Use the endpoint /webhooks/standard to capture updates.
Configure the webhook to trigger on specific events, such as when a new payment record is created or updated.
In the webhook payload, extract the relevant data fields: transaction_id, amount, and customer_email.
Set up a REST API call to Square's endpoint /v2/payments to insert the payment data into Square's system.
Map the extracted data from Notion to the appropriate fields in the Square API request body: transaction_id to idempotency_key, amount to amount_money, and customer_email to customer_email.
Test the integration by creating a sample payment record in Notion and verify that it appears correctly in Square.

Developer Warnings & API Gotchas

Ensure that the amount field in Notion is formatted as an integer (in cents) when sending to Square, as Square expects monetary values in the smallest currency unit.
Be cautious with the transaction_id; if a duplicate transaction is attempted, Square will reject it unless a unique idempotency_key is provided.
Check that the webhook in Notion is correctly configured to send updates only for relevant changes; otherwise, you may end up with unnecessary API calls to Square, leading to potential data pollution.

Supported API Operations

We leverage official, stable endpoints to ensure secure data transfer. No deprecated legacy routes.

When this happens in Notion... Data Source File Properties

Do this in Square Add Customer to Group
When this happens in Notion... Data Source Properties

Do this in Square Change Inventory
When this happens in Notion... Data Source Templates

Do this in Square Create Appointment
When this happens in Notion... Fetch Custom Actions

Do this in Square Create Customer
When this happens in Notion... List Data Source Items

Do this in Square Create Invoice

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I can see you're looking at mapping Notion to Square. Tell me about your current setup—what's the specific bottleneck you're trying to automate right now?