> ## Documentation Index > Fetch the complete documentation index at: https://docs.coreweave.com/llms.txt > Use this file to discover all available pages before exploring further. # Append traces to a dataset > Runs another fixed query and adds only unseen trace/turn pairs while preserving the original split configuration. ## OpenAPI ````yaml /openapi/model-distillation/management.openapi.yaml post /tasks/{alias}/datasets/{datasetId}/append openapi: 3.1.0 info: title: Model Distillation Management API version: 1.0.0 description: | Manage providers, tasks, routing versions, datasets, relabeling, fine-tunes, evaluations, analytics, and closed-loop training Automation. This is the same API used by Model Distillation Studio. servers: - url: https://distillation.training.wandb.ai/v1 description: Production security: - WandbApiKey: [] tags: - name: Providers description: OpenAI-compatible endpoints, credentials, model catalogs, and pricing. - name: Tasks description: Stable task identity and task-level information. - name: Routing description: Versioned model targets, weights, and request parameters. - name: Datasets description: >- Reproducible data snapshots, entries, relabeling, and reusable model outputs. - name: Fine-tunes description: Supervised fine-tuning jobs and hosted model artifacts. - name: Evaluations description: Head-to-head, exact-match, and categorization evaluations. - name: Automation description: Closed-loop dataset, sweep, evaluation, and promotion runs. - name: Analytics description: Task traffic, token, error, and estimated-cost read models. - name: Studio preferences description: Per-task display preferences used by Studio. paths: /tasks/{alias}/datasets/{datasetId}/append: parameters: - $ref: '#/components/parameters/WandbEntity' - $ref: '#/components/parameters/TaskAlias' - $ref: '#/components/parameters/DatasetId' post: tags: - Datasets summary: Append traces to a dataset description: >- Runs another fixed query and adds only unseen trace/turn pairs while preserving the original split configuration. operationId: appendDataset requestBody: required: true content: application/json: schema: type: object properties: params: type: object properties: query: type: object properties: source: anyOf: - type: string const: task - type: object properties: entity: type: string minLength: 1 project: type: string minLength: 1 required: - entity - project additionalProperties: false after: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$ before: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$ filters: default: {} type: object properties: task_version: type: integer exclusiveMinimum: 0 maximum: 2147483647 resolved_provider: type: string pattern: ^[a-z0-9][a-z0-9_-]{0,63}$ resolved_model: type: string minLength: 1 metadata: type: object propertyNames: type: string additionalProperties: {} additionalProperties: false required: - source - after - before additionalProperties: false sampling: type: object properties: strategy: type: string enum: - random - first limit: type: integer exclusiveMinimum: 0 maximum: 100000 required: - strategy - limit additionalProperties: false split: type: object additionalProperties: false required: - val - by properties: val: type: number minimum: 0 maximum: 1 by: type: string const: trace required: - query - sampling - split additionalProperties: false required: - params additionalProperties: false responses: '202': description: Append job was queued. content: application/json: schema: $ref: '#/components/schemas/Dataset' default: $ref: '#/components/responses/Error' components: parameters: WandbEntity: name: Wandb-Entity in: header required: false description: >- Accessible personal or team entity. Omit to use the API key's default entity. schema: type: string TaskAlias: name: alias in: path required: true schema: type: string pattern: ^[a-z0-9-]{1,64}$ DatasetId: name: datasetId in: path required: true schema: type: string format: uuid schemas: Dataset: type: object additionalProperties: true required: - id - task_id - name - params - revision - status - build_progress - entry_counts - relabel_runs - created_at - updated_at properties: id: type: string format: uuid task_id: type: string format: uuid name: type: string params: $ref: '#/components/schemas/DatasetParams' revision: type: integer status: type: string enum: - building - ready - failed build_progress: type: - object - 'null' required: - stage - processed - total - imported properties: stage: type: string enum: - discovering - importing - finalizing processed: type: integer total: type: - integer - 'null' imported: type: integer entry_counts: type: object required: - total - train - val properties: total: type: integer train: type: integer val: type: integer relabel_runs: type: array items: $ref: '#/components/schemas/RelabelRun' created_at: type: string format: date-time updated_at: type: string format: date-time DatasetParams: type: object additionalProperties: false required: - query - sampling - split properties: query: $ref: '#/components/schemas/DatasetQuery' sampling: type: object additionalProperties: false required: - strategy - limit properties: strategy: type: string const: random limit: type: integer minimum: 1 maximum: 100000 split: type: object additionalProperties: false required: - val - by properties: val: type: number minimum: 0 maximum: 1 by: type: string const: trace RelabelRun: type: object additionalProperties: true required: - id - dataset_id - dataset_revision - model_ref - status - output_count - created_at - updated_at properties: id: type: string format: uuid dataset_id: type: string format: uuid dataset_revision: type: integer model_ref: $ref: '#/components/schemas/ModelRef' status: type: string enum: - queued - running - completed - failed - stale error: type: - string - 'null' output_count: type: integer created_at: type: string format: date-time updated_at: type: string format: date-time ErrorResponse: type: object required: - error properties: error: type: object required: - message - type properties: message: type: string type: type: string example: error: message: Task 'missing' not found in entity 'your-team' type: not_found DatasetQuery: type: object additionalProperties: false required: - source - after - before properties: source: $ref: '#/components/schemas/DatasetSource' after: type: string format: date-time before: type: string format: date-time filters: type: object additionalProperties: false properties: task_version: type: integer minimum: 1 maximum: 2147483647 resolved_provider: type: string resolved_model: type: string metadata: $ref: '#/components/schemas/JsonObject' ModelRef: type: string pattern: ^[a-z0-9][a-z0-9_-]{0,63}/\S+$ example: openai/gpt-5.6-sol DatasetSource: oneOf: - type: string const: task - type: object additionalProperties: false required: - entity - project properties: entity: type: string project: type: string JsonObject: type: object additionalProperties: true responses: Error: description: Request failed. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' securitySchemes: WandbApiKey: type: http scheme: bearer bearerFormat: W&B API key description: A personal or service-account W&B API key. ````