The API isn't an add-on. It's the product.

Stop exporting spreadsheets into payroll.

The most expensive part of most attendance systems isn't the licence — it's the person who spends the last three days of every month reformatting a CSV so payroll will accept it, and the errors that survive that process.

WMS360 exposes attendance, leave, overtime and approval state over a documented HTTP API. Your payroll run pulls what it needs, when it needs it, from the system of record.

• Documented with OpenAPI — a machine-readable contract, so clients can be generated rather than hand-written against guesswork.
• Token authentication with the same granular permission model the UI uses. An integration account holds exactly the rights it needs.
• Stable public identifiers on every record, safe to store on your side as a foreign key.

# Request
GET /api/v1/reports/attendance?from=2026-08-01&to=2026-08-31
Authorization: Bearer <token>

# Response
{
  "periodStatus": "locked",
  "employees": [
    {
      "publicId": "a3f1c8e2-...",
      "employeeCode": "EMP-10428",
      "presentDays": 24,
      "leaveDays": 2,
      "overtimeHours": 11.5,
      "approvedBy": "sup-4471"
    }
  ]
}