> ## Documentation Index
> Fetch the complete documentation index at: https://docs.extend.ai/llms.txt
> Use this file to discover all available pages before exploring further.
>
> ## API version
> The current API version is `2026-02-09`, served at the site root (no version prefix in URLs).
> If this page URL contains `/2025-04-21/` or `/2024-12-23/`, you are reading an older API version.
> Prefer the current docs at https://docs.extend.ai/llms.txt unless the user explicitly needs that older version.
> Do not treat older-version pages as the source of truth for new integrations.

# Optimization

> Ship your document processing with Extend. Get started with our APIs, SDKs, and guides.

## Docs

- [Composer](https://docs.extend.ai/2026-02-09/optimization/composer.md): Composer is an AI assistant that improves your Extend processor configurations — extraction schemas, classifiers, splitters, and editors — from eval feedback.
- [Processor Memory](https://docs.extend.ai/2026-02-09/optimization/memory.md): Memory lets Extend classifiers, splitters, and extractors reuse validated historical results to improve accuracy on new documents over time.