> ## Documentation Index > Fetch the complete documentation index at: https://docs.landing.ai/llms.txt > Use this file to discover all available pages before exploring further. # ADE Section > Section parsed markdown into a hierarchical table of contents. This endpoint accepts the markdown output from /ade/parse (with reference anchors) and returns a flat, reading-order list of sections with hierarchy levels and reference ranges. For EU users, use this endpoint: `https://api.va.eu-west-1.landing.ai/v1/ade/section`. ## OpenAPI ````yaml /ade/va_openapi_ade2.json post /v1/ade/section openapi: 3.1.0 info: title: >- LandingAI Agentic Document Extraction (ADE) API v1: Parse, Extract, Classify, Split, Section version: 0.1.0 description: >- Convert documents such as PDFs, images, and Office files into structured data with LandingAI's Agentic Document Extraction (ADE) v1 endpoints. Includes Parse (documents to Markdown and structured chunks with grounding), Extract (schema-based field extraction), Classify (page-level classification), Split (separate multi-document files), and Section (hierarchical table of contents), plus asynchronous jobs for parsing and extraction. Documentation: https://docs.landing.ai servers: - url: https://api.va.landing.ai description: Production vision tools API security: [] paths: /v1/ade/section: post: tags: - Tools summary: ADE Section description: |- Section parsed markdown into a hierarchical table of contents. This endpoint accepts the markdown output from /ade/parse (with reference anchors) and returns a flat, reading-order list of sections with hierarchy levels and reference ranges. For EU users, use this endpoint: `https://api.va.eu-west-1.landing.ai/v1/ade/section`. operationId: tool_ade_section_v1_ade_section_post requestBody: content: multipart/form-data: schema: $ref: '#/components/schemas/SectionRequest' required: true responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/SectionResponse' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' security: - Basic Auth: [] x-codeSamples: - lang: cURL label: cURL source: |- curl -X POST 'https://api.va.landing.ai/v1/ade/section' \ -H 'Authorization: Bearer YOUR_API_KEY' \ -F 'markdown=@parsed_output.md' \ -F 'model=section-latest' - lang: Python label: Python source: >- import requests headers = { 'Authorization': 'Bearer YOUR_API_KEY' } url = 'https://api.va.landing.ai/v1/ade/section' # Prepare files and data files = {'markdown': open('parsed_output.md', 'rb')} data = { 'model': 'section-latest' } # Run section classification response = requests.post(url, files=files, data=data, headers=headers) # Return the results print(response.json()) - lang: JavaScript label: Node.js source: |- const axios = require('axios'); const FormData = require('form-data'); const fs = require('fs'); const form = new FormData(); form.append('markdown', fs.createReadStream('parsed_output.md')); form.append('model', 'section-latest'); axios.post('https://api.va.landing.ai/v1/ade/section', form, { headers: { 'Authorization': 'Bearer YOUR_API_KEY', ...form.getHeaders() } }) .then(response => console.log(response.data)) .catch(error => console.error(error)); components: schemas: SectionRequest: properties: markdown: anyOf: - type: string format: binary - type: string - type: 'null' title: Markdown description: >- Parsed markdown with reference anchors (). This is the markdown field from a parse response. markdown_url: anyOf: - type: string - type: 'null' title: Markdown Url description: URL to fetch the markdown from. guidelines: anyOf: - type: string - type: 'null' title: Guidelines description: >- Natural-language instructions to control hierarchy. Examples: 'Group by topic', 'Treat each numbered section as a top-level entry'. model: anyOf: - type: string - type: 'null' title: Model description: Section model version. Defaults to latest. type: object title: SectionRequest description: Request model for section endpoint. SectionResponse: properties: table_of_contents: items: $ref: '#/components/schemas/SectionTOCEntry' type: array title: Table Of Contents table_of_contents_md: type: string title: Table Of Contents Md metadata: $ref: '#/components/schemas/SectionMetadata' type: object required: - table_of_contents - table_of_contents_md - metadata title: SectionResponse description: Response model for section endpoint. HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError SectionTOCEntry: properties: title: type: string title: Title level: type: integer title: Level section_number: type: string title: Section Number start_reference: type: string title: Start Reference type: object required: - title - level - section_number - start_reference title: SectionTOCEntry description: A single entry in the flat table of contents. SectionMetadata: properties: filename: type: string title: Filename org_id: anyOf: - type: string - type: 'null' title: Org Id duration_ms: type: integer title: Duration Ms credit_usage: type: number title: Credit Usage job_id: type: string title: Job Id default: '' version: anyOf: - type: string - type: 'null' title: Version type: object required: - filename - duration_ms - credit_usage title: SectionMetadata description: Public metadata for section response. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type type: object required: - loc - msg - type title: ValidationError securitySchemes: Basic Auth: type: http description: >- Your unique API key for authentication. Get your API key here: https://va.landing.ai/settings/api-key. If using the EU endpoint, get your API key here: https://va.eu-west-1.landing.ai/settings/api-key. scheme: bearer bearerFormat: Basic ````