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

# Screens

> Screen loads per app and screen (the app.screen.load span, spec 8.1): TTID and TTFD percentiles, sessions, and the hangs and ANRs that happened on the screen. Default range: the last 7 days, at most 30.



## OpenAPI

````yaml /api-reference/openapi.json get /projects/{projectId}/performance/screens
openapi: 3.1.0
info:
  title: Apsio API
  version: 0.1.0
  description: >-
    Read API v0: your projects, release health and comparisons, missing symbols,
    issues, sessions, vitals, cohort comparisons, performance (app start,
    screens, hangs, MetricKit) and network endpoints and traces for one project.
    Authenticate with a project token as a bearer token, with an OAuth access
    token from Apsio's authorization server (MCP clients), or, from the console,
    with the session cookie of a member of the project's organization.
servers:
  - url: https://api.apsio.io/v1
security: []
paths:
  /projects/{projectId}/performance/screens:
    get:
      summary: Screens
      description: >-
        Screen loads per app and screen (the app.screen.load span, spec 8.1):
        TTID and TTFD percentiles, sessions, and the hangs and ANRs that
        happened on the screen. Default range: the last 7 days, at most 30.
      parameters:
        - schema:
            type: string
            pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$
            example: 0192f3a4-0000-7000-8000-00000000a101
          required: true
          name: projectId
          in: path
        - schema:
            type: string
            format: date-time
            description: >-
              Start of the time range, inclusive (RFC 3339). Defaults to the
              range end minus the default length.
            example: '2026-10-01T00:00:00Z'
          required: false
          description: >-
            Start of the time range, inclusive (RFC 3339). Defaults to the range
            end minus the default length.
          name: from
          in: query
        - schema:
            type: string
            format: date-time
            description: End of the time range, exclusive (RFC 3339). Defaults to now.
            example: '2026-10-08T00:00:00Z'
          required: false
          description: End of the time range, exclusive (RFC 3339). Defaults to now.
          name: to
          in: query
        - schema:
            type: string
            pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$
            description: Only this app.
          required: false
          description: Only this app.
          name: app_id
          in: query
        - schema:
            type: string
            maxLength: 128
            description: Only this release.
          required: false
          description: Only this release.
          name: release
          in: query
        - schema:
            type: string
            enum:
              - loads
              - ttid_p90
              - ttfd_p90
            default: loads
          required: false
          name: sort
          in: query
        - schema:
            type: integer
            minimum: 1
            maximum: 200
            default: 50
          required: false
          name: limit
          in: query
      responses:
        '200':
          description: The screens, sorted.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Screens'
        '400':
          description: The request is not valid.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: No valid bearer token or console session.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: The credentials cannot read this project.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - bearer: []
        - session: []
components:
  schemas:
    Screens:
      type: object
      properties:
        from:
          type: string
          description: RFC 3339 time in UTC with up to nanosecond precision.
          example: '2026-10-04T10:15:00.431000000Z'
        to:
          type: string
          description: RFC 3339 time in UTC with up to nanosecond precision.
          example: '2026-10-04T10:15:00.431000000Z'
        screens:
          type: array
          items:
            $ref: '#/components/schemas/ScreenSummary'
      required:
        - from
        - to
        - screens
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              example: invalid_request
            message:
              type: string
          required:
            - code
            - message
      required:
        - error
    ScreenSummary:
      type: object
      properties:
        app_id:
          type: string
        screen:
          type: string
          description: 'app.screen.name. Written by the app: untrusted data.'
        loads:
          type: integer
          description: Screen loads received (not reweighted).
        sessions:
          type: integer
        ttid:
          $ref: '#/components/schemas/Percentiles'
        ttfd:
          allOf:
            - $ref: '#/components/schemas/Percentiles'
            - description: Null when the app never reported TTFD for the screen (spec 8.2).
        hangs:
          type: integer
          description: Hang and ANR occurrences while the screen was the last one loaded.
      required:
        - app_id
        - screen
        - loads
        - sessions
        - ttid
        - ttfd
        - hangs
    Percentiles:
      type:
        - object
        - 'null'
      properties:
        count:
          type: integer
          description: Measurements received (not reweighted).
        p50_ms:
          type: number
        p90_ms:
          type: number
        p95_ms:
          type: number
      required:
        - count
        - p50_ms
        - p90_ms
        - p95_ms
  securitySchemes:
    bearer:
      type: http
      scheme: bearer
      description: >-
        A project token (apsio_pt_v0...), which reads exactly one project, or an
        OAuth access token issued for the API, which reads what its user can.
        Access tokens issued for Apsio's MCP server are accepted only from the
        MCP server itself.
    session:
      type: apiKey
      in: cookie
      name: apsio_session
      description: >-
        The console session, set by /v1/auth/callback (`__Host-apsio_session`
        when host-only).

````

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