> ## Documentation Index > Fetch the complete documentation index at: https://crsdk.app/llms.txt > Use this file to discover all available pages before exploring further. # List SD card files > List files on the SD card. Requires `remote-transfer` or `contents` mode. Returns 400 if called in `remote` mode. ## OpenAPI ````yaml /openapi.yaml get /api/cameras/{cameraId}/sd-card/slot/{slotNumber}/files openapi: 3.1.0 info: title: Alpha Camera REST API version: 3.0.0 description: > RESTful control for Sony cameras — shooting, settings, live view with OSD overlay, focus control, and file transfer through a clean HTTP interface. Built on the Sony Camera Remote SDK. Supports USB and network camera connections with multi-camera simultaneous operation. ## Connection Modes | Mode | Description | |------|-------------| | `remote` | Full camera control: shooting, settings, live view. Auto-transfer images to host PC. | | `remote-transfer` | Camera control + explicit SD card file access. Most capable mode. | | `contents` | SD card file access only. No shooting or settings control. | ## Quick Start 1. `GET /api/cameras` — discover cameras 2. `POST /api/cameras/{id}/connection` — connect 3. `PUT /api/cameras/{id}/priority-key` — set to `pc-remote` 4. `PUT /api/cameras/{id}/properties/{name}` — configure settings 5. `POST /api/cameras/{id}/actions/af-shutter` — shoot 6. `DELETE /api/cameras/{id}/connection` — disconnect ## Priority Key Requirement The camera's priority key **must** be set to `pc-remote` before it accepts any remote property changes or shooting commands. license: name: Proprietary contact: name: Camera Remote SDK url: https://github.com/ocjlee888/camera-remote-sdk-project servers: - url: http://{host}:{port} description: | Local camera server. The server binary runs on the host that has the camera physically connected (USB or network). Defaults to `http://localhost:8080`; override `host` and `port` when the server runs on a different machine (e.g. a Raspberry Pi next to the camera). variables: host: default: localhost description: Host running the camera server binary port: default: '8080' description: Port the camera server is listening on security: [] tags: - name: Connection description: Camera discovery, connection, and disconnection - name: Properties description: Read and write camera properties (ISO, aperture, shutter speed, etc.) - name: Actions description: Shooting commands and motor control (shutter, zoom, focus) - name: Live View description: Live view streaming and OSD overlay control - name: Events description: Server-Sent Events for real-time camera callbacks - name: SD Card description: SD card file browsing and download - name: Settings description: Save path configuration and camera settings file management - name: Server description: Server health, status, and log retrieval paths: /api/cameras/{cameraId}/sd-card/slot/{slotNumber}/files: get: tags: - SD Card summary: List SD card files description: > List files on the SD card. Requires `remote-transfer` or `contents` mode. Returns 400 if called in `remote` mode. operationId: listSDCardFiles parameters: - $ref: '#/components/parameters/cameraId' - $ref: '#/components/parameters/slotNumber' responses: '200': description: File list retrieved content: application/json: schema: $ref: '#/components/schemas/SDCardFileListResponse' '400': $ref: '#/components/responses/WrongConnectionMode' content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Camera not found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: parameters: cameraId: name: cameraId in: path required: true description: Camera identifier (e.g. `D10F60149B0C`) schema: type: string slotNumber: name: slotNumber in: path required: true description: SD card slot number (1 or 2) schema: type: integer enum: - 1 - 2 schemas: SDCardFileListResponse: type: object required: - success - slot - file_count - files properties: success: type: boolean slot: type: integer file_count: type: integer x-fern-property-name: fileCount files: type: array items: $ref: '#/components/schemas/SDCardFile' ErrorResponse: type: object description: | Standard non-2xx response envelope. The API does not currently expose a stable machine-readable error code in the JSON body, so clients should branch on HTTP status first and then inspect `message` for the human-readable reason. example: success: false message: Camera not connected camera: connected: false model: ILCE-7M4 id: D06CE05E3323 required: - success - message properties: success: type: boolean const: false example: false message: type: string example: Camera not connected camera: $ref: '#/components/schemas/CameraSummary' SDCardFile: type: object required: - content_id - file_id - file_path - file_size properties: content_id: type: integer description: SDK content handle for use in download requests x-fern-property-name: contentId file_id: type: integer description: > SDK file handle. Always `0` in contents-transfer mode (one file per content). Multi-file content (e.g. RAW+JPEG pair) returns separate entries with the same `content_id` and distinct `file_id` values. x-fern-property-name: fileId file_path: type: string example: DCIM/100MSDCF/DSC00001.ARW x-fern-property-name: filePath file_size: type: integer format: int64 description: File size in bytes x-fern-property-name: fileSize width: type: integer description: Image width in pixels (contents-transfer mode only) height: type: integer description: Image height in pixels (contents-transfer mode only) creation_year: type: integer x-fern-property-name: creationYear creation_month: type: integer x-fern-property-name: creationMonth creation_day: type: integer x-fern-property-name: creationDay creation_hour: type: integer x-fern-property-name: creationHour creation_minute: type: integer x-fern-property-name: creationMinute creation_second: type: integer x-fern-property-name: creationSecond CameraSummary: type: object description: Camera info embedded in API responses properties: connected: type: boolean example: false model: type: string example: ILCE-7M4 id: type: string example: D06CE05E3323 responses: WrongConnectionMode: description: | The endpoint is valid, but not in the camera's current connection mode. Reconnect using the documented mode for this operation. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' ````