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

# Record that a Shopify staff member opened the app

> Called once per app load from inside Shopify admin with the Shopify session token as the bearer. Answers JSON `null` straight after auth; behind the response it exchanges the token for an online grant, upserts the staff member's verified email (read back by `/users/me`), and sends `shopify_app_launched` plus PostHog group/identify events. Not useful from a staff (Access) identity: it needs a Shopify session token signed by the public app.



## OpenAPI

````yaml /api-reference/openapi/lite.json post /arm/launch
openapi: 3.1.0
info:
  title: Search & Merchandising API
  version: 1.0.0
  description: >-
    REST API behind Depict: Search & Merchandising, the native Shopify app:
    onboarding, collections, boost & bury, dashboards, A/B testing and
    multi-store management. Endpoints are served under the /api/lite prefix and
    are authenticated with the Shopify session token that App Bridge issues to
    the embedded app.
servers:
  - url: /api/lite
security:
  - ShopifySessionToken: []
paths:
  /arm/launch:
    post:
      summary: Record that a Shopify staff member opened the app
      description: >-
        Called once per app load from inside Shopify admin with the Shopify
        session token as the bearer. Answers JSON `null` straight after auth;
        behind the response it exchanges the token for an online grant, upserts
        the staff member's verified email (read back by `/users/me`), and sends
        `shopify_app_launched` plus PostHog group/identify events. Not useful
        from a staff (Access) identity: it needs a Shopify session token signed
        by the public app.
      operationId: armLaunch
      parameters:
        - schema:
            type: string
            description: Lite merchant id, e.g. `shopify-<shop id>`.
          required: true
          description: Lite merchant id, e.g. `shopify-<shop id>`.
          name: merchant_id
          in: query
      responses:
        '200':
          description: Accepted; the launch work runs behind the response.
          content:
            application/json:
              schema:
                type: 'null'
        '400':
          description: >-
            merchant_id is missing, or the merchant has no Shopify
            configuration.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
        '401':
          description: No bearer, or the session token is not signed by the public app.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
        '403':
          description: Authenticated, but this identity may not call the API.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
        '404':
          description: Merchant not found for this caller.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
        '500':
          description: Internal error.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
components:
  schemas:
    Detail:
      type: object
      properties:
        detail:
          type: string
      required:
        - detail
      description: 'Every 4xx/5xx body: `{detail}`.'
  securitySchemes:
    ShopifySessionToken:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: >-
        Shopify App Bridge session token of the embedded Depict: Search &
        Merchandising app. The shop in the token determines the merchant;
        merchant_id parameters must belong to that shop.

````