> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lala.ist/llms.txt
> Use this file to discover all available pages before exploring further.

# Unregister a device

> Stops push to this device. Call it on sign-out, before the token is discarded.

The token travels in the body rather than the path because an FCM token contains
characters that a path segment would have to escape.



## OpenAPI

````yaml /api-reference/openapi.json delete /api/devices
openapi: 3.1.0
info:
  title: Lala Client API
  description: >-
    The HTTP API behind Lala, the AI study companion for Turkish YKS and LGS
    students. This document is generated from the Zod schemas that validate each
    request at runtime. Do not hand-edit openapi.json. Student-visible text is
    Turkish. All identifiers are English.
  version: 1.0.0
servers:
  - url: https://client-api.lala.ist
    description: production
  - url: http://localhost:3000
    description: local dev
security:
  - supabaseJwt: []
tags:
  - name: chat
    description: The chat stream, the message history, and reactions
  - name: media
    description: Upload and read message attachments
  - name: plan
    description: The study planner — blocks of work on a day
  - name: journey
    description: Deneme results, topic performance, study-hours stats, and the streak
  - name: profile
    description: The student profile and onboarding
  - name: devices
    description: Push notification devices
  - name: system
    description: Health check
paths:
  /api/devices:
    delete:
      tags:
        - devices
      summary: Unregister a device
      description: >-
        Stops push to this device. Call it on sign-out, before the token is
        discarded.


        The token travels in the body rather than the path because an FCM token
        contains

        characters that a path segment would have to escape.
      operationId: deleteApiDevices
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/DeviceUnregisterBody'
      responses:
        '200':
          description: The device is gone
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeviceUnregisterResponse'
        '401':
          description: The token is missing, expired, or invalid
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: No such device for this student
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    DeviceUnregisterBody:
      type: object
      properties:
        token:
          type: string
          minLength: 1
          maxLength: 4096
      required:
        - token
    DeviceUnregisterResponse:
      type: object
      properties:
        removed:
          type: boolean
        token:
          type: string
      required:
        - removed
        - token
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
        issues:
          description: >-
            Present only on a 400 raised by request validation, capped at 10
            entries. Every other error carries `error` alone.
          type: array
          items:
            $ref: '#/components/schemas/ValidationIssue'
      required:
        - error
      description: Error body. `error` is a short English string.
    ValidationIssue:
      type: object
      properties:
        path:
          type: string
          description: Dotted path to the offending field, empty at the root.
        message:
          type: string
      required:
        - path
        - message
  securitySchemes:
    supabaseJwt:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'Supabase access token: `Authorization: Bearer <token>`'

````

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