Doclytics is a straightforward Rust-based tool that integrates with the paperless-ngx API to fetch and update document metadata. It primarily leverages a local language model, ollama, to extract and generate metadata for documents stored in a Paperless document library. The tool uses reqwest for making HTTP requests and serde_json for handling JSON data, ensuring seamless communication with the Paperless API and efficient data processing.

By interfacing directly with ollama, Doclytics automates the extraction of specified metadata from documents, utilizing the local LLM's capabilities to analyze document content and produce the required metadata in a JSON format. This metadata is then used to update the respective documents in the Paperless library, aiming to improve document organization and retrievability without overly complex processes or configurations.