---
title: "Register Token"
method: POST
path: "/device/{version}/{container}/{environment}/tokens/register"
tags: ["Tokens"]
---

# Register Token

`POST /device/{version}/{container}/{environment}/tokens/register`

Register an APNs device token for push notifications.

Lives under the `/device/` API module (not `/database/`) — same
rationale as `tokens/create`.

## Path parameters

- `version` string, required — Protocol version
- `container` string, required — Container ID (begins with "iCloud.")
- `environment` 'development' | 'production', required — Container environment

## Request body

- object
  - `apnsEnvironment` 'development' | 'production', required — The APNs environment the token targets.
  - `apnsToken` string, required — The APNs token to register
  - `clientId` string, required — Logical CloudKit client identifier. Reuse the value used with `tokens/create` to keep both calls tied to the same logical client.

## Response `200`

Token registered successfully

## Other responses

- `400` — Error response shared by all endpoints. The body schema is the same for every 4xx/5xx status code; the HTTP status code itself disambiguates which CloudKit failure occurred. See Apple's CloudKit Web Services Error Codes documentation for the full code → status mapping: - 400 BadRequest (BAD_REQUEST, ATOMIC_ERROR) - 401 Unauthorized (AUTHENTICATION_FAILED) - 403 Forbidden (ACCESS_DENIED) - 404 NotFound (NOT_FOUND, ZONE_NOT_FOUND) - 409 Conflict (CONFLICT, EXISTS) - 412 PreconditionFailed (VALIDATING_REFERENCE_ERROR) - 413 RequestEntityTooLarge (QUOTA_EXCEEDED) - 421 UnprocessableEntity (AUTHENTICATION_REQUIRED) - 429 TooManyRequests (THROTTLED) - 500 InternalServerError (INTERNAL_ERROR) - 503 ServiceUnavailable (TRY_AGAIN_LATER)
- `401` — Error response shared by all endpoints. The body schema is the same for every 4xx/5xx status code; the HTTP status code itself disambiguates which CloudKit failure occurred. See Apple's CloudKit Web Services Error Codes documentation for the full code → status mapping: - 400 BadRequest (BAD_REQUEST, ATOMIC_ERROR) - 401 Unauthorized (AUTHENTICATION_FAILED) - 403 Forbidden (ACCESS_DENIED) - 404 NotFound (NOT_FOUND, ZONE_NOT_FOUND) - 409 Conflict (CONFLICT, EXISTS) - 412 PreconditionFailed (VALIDATING_REFERENCE_ERROR) - 413 RequestEntityTooLarge (QUOTA_EXCEEDED) - 421 UnprocessableEntity (AUTHENTICATION_REQUIRED) - 429 TooManyRequests (THROTTLED) - 500 InternalServerError (INTERNAL_ERROR) - 503 ServiceUnavailable (TRY_AGAIN_LATER)

## Changes

- **2026-05-31** `44029c7b63a3` — 1 info
  - endpoint added
- **2025-07-05** `a6d50d6e9dde` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/brightdigit/apis/apple-cloudkit-web-services-api/changes/device/:version/:container/:environment/tokens/register/post.md)

---

[API](https://skmtc.dev/brightdigit/apis/apple-cloudkit-web-services-api.md) · [All operations](https://skmtc.dev/brightdigit/apis/apple-cloudkit-web-services-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/brightdigit/apple-cloudkit-web-services-api/revisions/db45a101c485/schema)