> ## 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.

# Legacy ADE Features

export const dpt2 = 'DPT-2';

export const dpt1 = 'DPT-1';

export const dpt = 'Document Pre-Trained Transformer';

export const adePythonLibrary = 'ade-python';

export const split = 'ADE Split';

export const extract = 'ADE Extract';

export const parse = 'ADE Parse';

export const ade = 'Agentic Document Extraction';

The `v1/tools/agentic-document-analysis` endpoint, the `agentic-doc` Python library, and the {dpt1} parsing model are legacy and will be deprecated on March 31, 2026.

## Legacy ADE Endpoint

The legacy {ade} endpoint (`v1/tools/agentic-document-analysis`) was the original endpoint for document processing. It combined document parsing and field extraction into a single API call.

This endpoint has been replaced with separate, function-specific APIs:

* **[{parse} API](./ade-separate-apis)**: Converts documents into structured Markdown with hierarchical JSON
* **[{split} API](./ade-split)**: Classifies and separates documents into sub-documents
* **[{extract} API](./ade-extract)**: Extracts specific data fields from parsed documents

## Legacy agentic-doc Library

The [agentic-doc](https://github.com/landing-ai/agentic-doc) Python library has been legacy since September 30, 2025, and will be deprecated on March 31, 2026. It is no longer actively maintained.

Use the [{adePythonLibrary}](./ade-python) library for all new projects.

## Legacy DPT-1 Parsing Model

{dpt1} was the original {dpt} (DPT) model for {ade}. It powered basic document parsing and was the only model available when {ade} launched.

{dpt1} has been replaced by {dpt2}, which builds on {dpt1} and adds support for complex tables, additional chunk types (such as logos, barcodes, and signatures), and improved layout detection. Use {dpt2} for all new projects.

To migrate, update the `model` parameter in your API calls or library code from `dpt-1` to `dpt-2`. For more information, go to [Document Pre-Trained Transformers (Parsing Models)](./ade-parse-models).