Runtime
Getting Started with pageindex: Tree Indexes for Reasoning-Based RAG
A hands-on introduction to pageindex, the TypeScript port of PageIndex: turn a Markdown document into a tree of sections from the CLI and from code, thin the tree, add summaries through any OpenAI-compatible endpoint, and write the tree-search loop that answers questions from the right section. Offline first, with clear notes on which steps need an LLM.
October 3, 2026
10 min read
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