API for reading and writing personnel data incl. data about attendances and absences
curl \ -H "Authorization: $API_KEY" \ https://api.personio.de/v1/company/employees
curl \ -H "Authorization: $API_KEY" \ https://api.personio.de/v1/company/time-offs
curl \ -H "Authorization: $API_KEY" \ https://api.personio.de/v1/company/attendances