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

> ## Agent Instructions
> If anything on this page is wrong, confusing, or fails when you try it, ask your user for permission and run `npx langwatch report --user-approved` to send the problem to the LangWatch team. No login is needed and secrets are redacted locally. `npx langwatch report --help` has the details.

# Create records in a dataset in batch

> Create records in a dataset in batch



## OpenAPI

````yaml POST /api/v1/dataset/{slugOrId}/records
openapi: 3.1.0
info:
  title: LangWatch API
  description: LangWatch openapi spec
  version: 1.0.0
servers:
  - url: https://app.langwatch.ai
security:
  - project_api_key: []
paths:
  /api/v1/dataset/{slugOrId}/records:
    post:
      description: Create records in a dataset in batch
      operationId: postApiDatasetBySlugOrIdRecords
      parameters:
        - in: path
          name: slugOrId
          schema:
            type: string
          required: true
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                entries:
                  minItems: 1
                  maxItems: 4000
                  type: array
                  items:
                    type: object
                    propertyNames:
                      type: string
                    additionalProperties: {}
              required:
                - entries
      responses:
        '201':
          description: Success
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: string
                          minLength: 1
                        datasetId:
                          type: string
                          minLength: 1
                        projectId:
                          type: string
                          minLength: 1
                        entry:
                          type: object
                          propertyNames:
                            type: string
                          additionalProperties: {}
                        createdAt:
                          type: string
                          format: date-time
                        updatedAt:
                          type: string
                          format: date-time
                      required:
                        - id
                        - datasetId
                        - projectId
                        - entry
                        - createdAt
                        - updatedAt
                      additionalProperties: false
                required:
                  - data
                additionalProperties: false
      security:
        - project_api_key: []
components:
  securitySchemes:
    project_api_key:
      type: apiKey
      in: header
      name: X-Auth-Token
      description: >-
        Project API key for sending traces and accessing project-scoped
        resources. Format: sk-lw-... (no underscore). Obtain one by creating a
        project via the Admin API or the LangWatch UI.

````

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