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

# Extract chunks from knowledge base

> This endpoint can be used to retrieve top n chunks per query.

The query can be a single string or a list of strings.

The `collection` field can be used to specify the collection to query, which defaults to `base_collection`.

An optional integer `n` can be provided in order to retrieve top n chunks, which defaults to 5 if not specified.

**Response**: Returns an array of results, one for each input query.



## OpenAPI

````yaml /api-reference/openapi-v2.yaml post /api/v2/query
openapi: 3.0.3
info:
  title: Paradigm API
  version: xenial-xerus (v2)
  description: >-
    A versatile and adaptable tool designed to integrate Generative AI into your
    applications
servers:
  - url: https://paradigm.lighton.ai
security: []
tags:
  - name: Models
    description: Operations about AI models
  - name: Files Search
    description: Operations about files search
  - name: Files
    description: Operations about files
  - name: Upload Sessions
    description: Operations about upload sessions
  - name: Workspaces
    description: Operations about workspaces
  - name: Users
    description: Operations about users
  - name: Companies
    description: Operations about companies
  - name: SCIM
    description: Operations about SCIM
  - name: Feedbacks
    description: Operations about feedbacks
  - name: Reporting
    description: Operations about reporting
  - name: Monitoring
    description: Operations about monitoring
  - name: Platform Status
    description: Operations about platform status
paths:
  /api/v2/query:
    post:
      tags:
        - Files Search
      summary: Extract chunks from knowledge base
      description: >-
        This endpoint can be used to retrieve top n chunks per query.


        The query can be a single string or a list of strings.


        The `collection` field can be used to specify the collection to query,
        which defaults to `base_collection`.


        An optional integer `n` can be provided in order to retrieve top n
        chunks, which defaults to 5 if not specified.


        **Response**: Returns an array of results, one for each input query.
      operationId: api_v2_query_create
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RetrieveRequest'
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/RetrieveRequest'
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/RetrieveRequest'
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/RetrieveResponse'
          description: ''
      security:
        - bearerAuth: []
components:
  schemas:
    RetrieveRequest:
      type: object
      description: Request serializer for retrieving top n chunks per query.
      properties:
        query:
          type: string
          description: A single string or a list of strings representing the search queries
        collection:
          type: string
          nullable: true
          description: >-
            The collection to query, defaults to 'base_collection' if not
            specified
        'n':
          type: integer
          nullable: true
          description: >-
            Number of top chunks to retrieve per query, defaults to 5 if not
            specified
      required:
        - query
    RetrieveResponse:
      type: object
      description: Response serializer for document chunk retrieval results.
      properties:
        query:
          type: string
          description: The original query used for retrieval
        chunks:
          type: array
          items:
            $ref: '#/components/schemas/RetrieveResultChunk'
          description: List of retrieved document chunks with their relevance scores
      required:
        - chunks
    RetrieveResultChunk:
      type: object
      description: Serializer for individual document chunks in retrieve results.
      properties:
        uuid:
          type: string
          format: uuid
          description: Unique identifier for the document chunk
        text:
          type: string
          description: Text content of the document chunk
        metadata:
          type: object
          additionalProperties: {}
          description: Metadata associated with the document chunk
        score:
          type: number
          format: double
          description: Relevance score for this chunk relative to the query
      required:
        - metadata
        - score
        - text
        - uuid
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        Bearer authentication header of the form `Bearer <token>`, where
        `<token>` is your auth token.

````