DatasetsManager.create()

Added in: @mastra/[email protected]

Creates a new dataset. Zod schemas passed as inputSchema or groundTruthSchema are automatically converted to JSON Schema.

Usage example

import { Mastra } from '@mastra/core'
import { z } from 'zod'

const mastra = new Mastra({
  /* storage config */
})

// Create with metadata
const dataset = await mastra.datasets.create({
  name: 'QA evaluation set',
  description: 'Question-answer pairs for testing',
  metadata: { team: 'ml' },
})

// Create with Zod schemas
const typedDataset = await mastra.datasets.create({
  name: 'Typed QA set',
  inputSchema: z.object({
    question: z.string(),
    context: z.string().optional(),
  }),
  groundTruthSchema: z.object({
    answer: z.string(),
  }),
})

Parameters

<PropertiesTable content={[ { name: 'name', type: 'string', description: 'Display name for the dataset.', }, { name: 'description', type: 'string', isOptional: true, description: 'Description of the dataset.', }, { name: 'inputSchema', type: 'unknown', isOptional: true, description: 'JSON Schema or Zod schema for item inputs. Zod schemas are auto-converted.', }, { name: 'groundTruthSchema', type: 'unknown', isOptional: true, description: 'JSON Schema or Zod schema for item ground truths. Zod schemas are auto-converted.', }, { name: 'metadata', type: 'Record<string, unknown>', isOptional: true, description: 'Arbitrary metadata.', }, ]} />

Returns

<PropertiesTable content={[ { name: 'result', type: 'Promise<Dataset>', description: 'A Dataset instance for the newly created dataset.', }, ]} />