Token Saver is an open‑source MCP extension for Claude‑Desktop that uses a lightweight local hybrid RAG pipeline to process PDFs locally, eliminating the need to re‑send the entire document on every turn. By keeping context on the client side, it cuts Claude PDF token costs by 90‑99%, drastically reducing both token expenditure and context window bloat. The tool is designed to handle large documents—such as a 200‑page file—without uploading raw data to the cloud.