What is a RAG system for Claude Code?

It's a local semantic search that chunks your code by method, embeds it, and feeds Claude only relevant snippets — slashing tokens 10x.

How do I set up RAG for my codebase?

Install chromadb + sentence-transformers, tweak SOURCE_DIR and FILE_EXT in the 50-line script, run index.py. Query with embeds.

Does this RAG work on non-C# projects?

Yep — just change FILE_EXT to .py, .js, etc. Regex method parsing adapts; fallback indexes whole files.

☁️ Cloud & Infrastructure

50-Line RAG Hack Slashes Claude Code Tokens 10x on My 22K-File Unity Beast

Claude Code users know the pain: massive token burn just to answer one question. A 50-line Python RAG flips the script, serving precise code chunks locally—no APIs, pure savings.

theAIcatchup Apr 10, 2026 4 min read

Python code snippet indexing C# methods from Unity project into ChromaDB for RAG

⚡ Key Takeaways

50-line local RAG delivers 6-10x token savings on Claude Code queries by serving precise method chunks. 𝕏
Runs 100% locally with ChromaDB and MiniLM embeddings—no APIs, perfect for 22K+ file codebases. 𝕏
Bold prediction: Local RAG becomes standard for all AI coding tools, turning token limits into non-issues. 𝕏

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#Claude Code #RAG system #codebase indexing #semantic code search #token savings

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