> ## Documentation Index > Fetch the complete documentation index at: https://docs.ndi.nace.ai/llms.txt > Use this file to discover all available pages before exploring further. # list_output_members > List the objects inside a derived-output folder, each presigned inline. Cost class: **fast**. A recording's ``frames/`` folder is registered as a single ``derived_file`` output, not one row per frame, so this browses the folder straight from storage. A leaf output (a single markdown/json file) has no members and returns an empty page. ## OpenAPI ````yaml /openapi.json get /v1/workspaces/{workspace_id}/files/{file_id}/outputs/{output_id}/members openapi: 3.1.0 info: description: >- Document intelligence: parse, split, classify, extract, and ground files, or build a searchable workspace. Authenticate with ``X-API-Key``. title: NDI Platform API version: 0.1.0 servers: - url: https://ndi-api.nace.ai security: [] tags: [] paths: /v1/workspaces/{workspace_id}/files/{file_id}/outputs/{output_id}/members: get: tags: - files summary: list_output_members description: >- List the objects inside a derived-output folder, each presigned inline. Cost class: **fast**. A recording's ``frames/`` folder is registered as a single ``derived_file`` output, not one row per frame, so this browses the folder straight from storage. A leaf output (a single markdown/json file) has no members and returns an empty page. operationId: >- list_output_members_v1_workspaces__workspace_id__files__file_id__outputs__output_id__members_get parameters: - in: path name: file_id required: true schema: format: uuid title: File Id type: string - in: path name: output_id required: true schema: format: uuid title: Output Id type: string - description: Workspace identifier. in: path name: workspace_id required: true schema: description: Workspace identifier. format: uuid title: Workspace Id type: string - description: Members to skip, for paging a large folder. in: query name: offset required: false schema: default: 0 description: Members to skip, for paging a large folder. minimum: 0 title: Offset type: integer - description: Rows per page. in: query name: limit required: false schema: default: 50 description: Rows per page. maximum: 200 minimum: 1 title: Limit type: integer responses: '200': content: application/json: schema: $ref: '#/components/schemas/ArtifactOutputMembersPage' description: Successful Response '504': content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' description: Gateway Timeout default: content: application/json: example: error: code: invalid_request detail: null message: >- Request body has extra fields that this operation does not accept. request_id: req-01j9k2n3p4q5r6s7t8v9 retryable: false schema: $ref: '#/components/schemas/ErrorEnvelope' description: >- Typed error envelope used by every 4xx and 5xx. ``error.code`` distinguishes the failure; HTTP status is a consequence of the code. security: - APIKeyHeader: [] components: schemas: ArtifactOutputMembersPage: additionalProperties: false description: >- A page of the objects inside a derived-output folder. ``total_count`` is the whole folder; ``members`` is the requested window, so a large ``frames/`` folder streams into the console a page at a time instead of presigning thousands of URLs at once. properties: download_url_expires_at: description: When the presigned URLs stop being valid. format: date-time title: Download Url Expires At type: string members: items: $ref: '#/components/schemas/ArtifactOutputMember' title: Members type: array total_count: description: Objects in the folder, across all pages. title: Total Count type: integer required: - members - total_count - download_url_expires_at title: ArtifactOutputMembersPage type: object ErrorEnvelope: description: Every non-2xx body on ``/v1``. example: error: code: invalid_request detail: null message: Request body has extra fields that this operation does not accept. request_id: req-01j9k2n3p4q5r6s7t8v9 retryable: false properties: error: $ref: '#/components/schemas/Error' required: - error title: ErrorEnvelope type: object ArtifactOutputMember: additionalProperties: false description: >- One object inside a derived-output folder, with short-lived fetch URLs. A recording's ``frames/`` output is registered as one folder, not one row per JPEG (root ``AGENTS.md`` → media lane). This is how a caller browses that folder's members without the ledger carrying thousands of rows: the objects are listed from storage on demand and presigned inline. properties: download_url: description: Time-limited presigned GET URL that saves the member to disk. title: Download Url type: string file_name: description: The member's base name. title: File Name type: string path: description: Workspace-relative path of the member object. title: Path type: string preview_url: description: Time-limited presigned GET URL that a browser renders inline. title: Preview Url type: string size_bytes: description: Object size in bytes. title: Size Bytes type: integer required: - path - file_name - size_bytes - download_url - preview_url title: ArtifactOutputMember type: object Error: description: The error object, per spec 12 §1.8. properties: code: $ref: '#/components/schemas/ErrorCode' detail: anyOf: - additionalProperties: true type: object - type: 'null' description: Structured payload, when the code carries one. title: Detail message: description: Human- and model-readable; says what to do differently. title: Message type: string request_id: description: Per-request correlation id; matches the ``X-Request-Id`` header. title: Request Id type: string retryable: description: Whether retrying the identical request could succeed. title: Retryable type: boolean required: - code - message - retryable - request_id title: Error type: object ErrorCode: description: |- Every error the ``/v1`` surface can return. Clients must treat this as an **open** enum: a new member is an additive change (spec 12 §9), and a client that crashes on an unknown code makes every future error a breaking change. enum: - invalid_request - unsupported_file_type - file_too_large - invalid_schema - invalid_sql - invalid_path_prefix - command_not_permitted - batch_too_large - domain_validation_failed - default_label_required - wait_required_for_zero_retention - workspace_not_found - file_not_found - job_not_found - upload_not_found - node_not_found - schema_not_found - domain_not_found - session_not_found - access_label_not_found - path_conflict - schema_version_conflict - access_label_name_taken - workspace_name_taken - access_label_in_use - upload_expired - file_not_ingested - workspace_deleting - workspace_not_deletable - ingestion_in_progress - job_not_cancellable - confirmation_required - domain_not_published - domain_in_use - reserved_domain_slug - kg_not_built - kg_build_in_progress - session_busy - range_not_satisfiable - result_expired - access_denied - access_backstop_violation - access_mode_not_implemented - rate_limited - concurrency_limit_reached - quota_exceeded - corrupt_file - zero_byte_file - encrypted_file - parse_failed - ocr_failed - conversion_failed - sheetless_workbook - unplayable_media - unclassified_pages - job_cancelled - job_timeout - upstream_unavailable - internal_error - unauthorized - not_implemented title: ErrorCode type: string securitySchemes: APIKeyHeader: in: header name: X-API-Key type: apiKey ````