# Create an on-call rotation — API reference > Stores the rotation name, members, handoff settings, time zone, and optional client scope. Source: https://upfour.io/docs/api/oncall-schedules/create-an-on-call-rotation [Developers](https://upfour.io/docs/api.md)/[On-call rotations](https://upfour.io/docs/api/oncall-schedules.md) Stores the rotation name, members, handoff settings, time zone, and optional client scope. POST https://app.upfour.io/v1/oncall-schedules scope oncall.write stable [Idempotency-Key supported](https://upfour.io/docs/api/idempotency.md) returns 201 ## Body `application/json` required 7 fields namestring (required) Unique within the company. In the app: **Name** All other fields6 fields client_iduuid · nullable handoff_dayinteger Weekday of the weekly handoff, 0 = Sunday to 6 = Saturday, in the schedule's time zone. Daily rotations ignore it. A value outside 0 to 6 is stored as 1 (Monday). In the app: **Handoff day** handoff_timestring Time of day of the handoff as HH:MM or HH:MM:SS in the schedule's time zone; empty means 09:00:00. In the app: **Handoff time** member_idsuuid[] User IDs of the company members in rotation order. On update they replace the current members. In the app: **Team members** rotation_typestring daily hands off every day at handoff_time, weekly every week on handoff_day at handoff_time. custom currently behaves like weekly; there is no custom shift length yet. Required on PUT; POST defaults to weekly. dailyweeklycustom In the app: **Rotation frequency** timezonestring IANA time zone name; empty means UTC. In the app: **Timezone** ## Returns A successful request returns `201` with application/json. Response fields 1 top-level fields | Field | Type | Description | | --- | --- | --- | | `data` | OnCallSchedule | | | OnCallSchedule · 28 fields FieldTypeDescription `created_at` string (date-time) `handoff_day` integer Weekday of the weekly handoff, 0 = Sunday to 6 = Saturday. `handoff_time` string HH:MM:SS in the schedule's time zone. `id` uuid `members` OnCallMember[] · nullable Each item · 8 fields FieldTypeDescription `created_at` string (date-time) `id` uuid `schedule_id` uuid `sort_order` integer `user_id` uuid `email` string `first_name` string `last_name` string `name` string `organization_id` uuid `rotation_type` string one of`daily` `weekly` `custom` `timezone` string `updated_at` string (date-time) `client_id` uuid `current_oncall` OnCallMember The person on call right now, an active override first; absent while nobody is. OnCallMember · 8 fields FieldTypeDescription `created_at` string (date-time) `id` uuid `schedule_id` uuid `sort_order` integer `user_id` uuid `email` string `first_name` string `last_name` string | | | ## Errors Only the errors this operation can return. Every error uses the [same envelope](https://upfour.io/docs/api/responses.md). | Status | Code | Meaning | | --- | --- | --- | | 400 | [bad_request](https://upfour.io/docs/api/errors#code-bad_request) | The request is malformed or fails validation. | | 403 | [permission_denied](https://upfour.io/docs/api/errors#code-permission_denied) | The credentials do not permit this action. | Every call can also return `unauthorized` (401), `rate_limit_exceeded` (429) or `internal_error` (500 / 502). See [Responses and errors](https://upfour.io/docs/api/responses.md). [PreviousList on-call rotations](https://upfour.io/docs/api/oncall-schedules/list-on-call-rotations.md) [NextGet the current on-call person](https://upfour.io/docs/api/oncall-schedules/get-the-current-on-call-person.md) ## Request ### cURL ```bash curl -s -X POST "https://app.upfour.io/v1/oncall-schedules" \ -H "Authorization: Bearer $UP4_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "handoff_day": 1, "handoff_time": "09:00", "member_ids": [ "00000000-0000-4000-8000-000000000001" ], "name": "Platform on-call", "rotation_type": "weekly", "timezone": "Europe/Berlin" }' ``` ### JavaScript ```javascript const res = await fetch("https://app.upfour.io/v1/oncall-schedules", { method: "POST", headers: { Authorization: `Bearer ${process.env.UP4_API_KEY}`, "Content-Type": "application/json", }, body: JSON.stringify({ handoff_day: 1, handoff_time: "09:00", member_ids: ["00000000-0000-4000-8000-000000000001"], name: "Platform on-call", rotation_type: "weekly", timezone: "Europe/Berlin", }), }); console.log(res.status, await res.json()); ``` ### Python ```python import os import requests res = requests.post( "https://app.upfour.io/v1/oncall-schedules", headers={"Authorization": f"Bearer {os.environ['UP4_API_KEY']}"}, json={ "handoff_day": 1, "handoff_time": "09:00", "member_ids": ["00000000-0000-4000-8000-000000000001"], "name": "Platform on-call", "rotation_type": "weekly", "timezone": "Europe/Berlin", }, ) print(res.status_code, res.json()) ``` ### Go ```go package main import ( "fmt" "io" "net/http" "os" "strings" ) func main() { payload := strings.NewReader(`{ "handoff_day": 1, "handoff_time": "09:00", "member_ids": [ "00000000-0000-4000-8000-000000000001" ], "name": "Platform on-call", "rotation_type": "weekly", "timezone": "Europe/Berlin" }`) req, _ := http.NewRequest("POST", "https://app.upfour.io/v1/oncall-schedules", payload) req.Header.Set("Authorization", "Bearer "+os.Getenv("UP4_API_KEY")) req.Header.Set("Content-Type", "application/json") res, err := http.DefaultClient.Do(req) if err != nil { panic(err) } defer res.Body.Close() out, _ := io.ReadAll(res.Body) fmt.Println(res.StatusCode, string(out)) } ``` ### PHP ```php "POST", CURLOPT_RETURNTRANSFER => true, CURLOPT_HTTPHEADER => [ "Authorization: Bearer " . getenv("UP4_API_KEY"), "Content-Type: application/json", ], CURLOPT_POSTFIELDS => $payload, ]); $response = curl_exec($ch); echo curl_getinfo($ch, CURLINFO_RESPONSE_CODE), " ", $response, "\n"; curl_close($ch); ``` ## Response ### 201 ```json { "data": { "created_at": "2026-10-27T09:00:00Z", "handoff_day": 1, "handoff_time": "09:00:00", "id": "00000000-0000-4000-8000-000000000002", "members": [ { "created_at": "2026-10-27T09:00:00Z", "email": "anna@example.com", "id": "00000000-0000-4000-8000-000000000003", "schedule_id": "00000000-0000-4000-8000-000000000002", "sort_order": 0, "user_id": "00000000-0000-4000-8000-000000000001" } ], "name": "Platform on-call", "organization_id": "00000000-0000-4000-8000-000000000004", "rotation_type": "weekly", "timezone": "Europe/Berlin", "updated_at": "2026-10-27T09:00:00Z" } } ``` ### 400 ```json { "error": { "code": "bad_request", "message": "The request is malformed or fails validation.", "request_id": "req_…" } } ``` ### 403 ```json { "error": { "code": "permission_denied", "message": "The credentials do not permit this action.", "request_id": "req_…" } } ```