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OpenAPI Specification

openapi: 3.2.0
info:
  title: Lucidworks Content Chunking API
  description: The Content Chunking API splits long-form content into retrieval-ready passages using dynamic-sentence chunkers, semantic chunkers, and regex splitters. Chunked output feeds vector indexing and RAG pipelines.
  version: 1.0.0
  contact:
    name: Lucidworks Support
    url: https://lucidworks.com/support
servers:
- url: https://api.lucidworks.ai
security:
- bearerAuth: []
tags:
- name: Chunking
  description: Split content into chunks
paths:
  /ai/chunk/{chunker}:
    post:
      tags:
      - Chunking
      summary: Chunk text using the specified chunker
      operationId: chunkText
      parameters:
      - name: chunker
        in: path
        required: true
        schema:
          type: string
          enum:
          - dynamic-sentence
          - semantic
          - regex
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ChunkRequest'
      responses:
        '202':
          description: Chunking job accepted
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ChunkAck'
  /ai/chunk/results/{chunkingId}:
    get:
      tags:
      - Chunking
      summary: Get chunking results
      operationId: getChunkingResults
      parameters:
      - name: chunkingId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Chunking result
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ChunkResult'
components:
  schemas:
    ChunkAck:
      type: object
      properties:
        chunkingId:
          type: string
        status:
          type: string
    ChunkRequest:
      type: object
      required:
      - input
      properties:
        input:
          type: string
        maxTokens:
          type: integer
        overlap:
          type: integer
        regex:
          type: string
    ChunkResult:
      type: object
      properties:
        chunkingId:
          type: string
        status:
          type: string
        chunks:
          type: array
          items:
            type: object
            properties:
              text:
                type: string
              tokens:
                type: integer
              index:
                type: integer
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
externalDocs:
  description: Lucidworks Chunking API Reference
  url: https://doc.lucidworks.com/api-reference/split-content-into-chunks/chunk-text-using-the-specified-chunker