ast-outline: a parallel structural code summarizer written in Rust (5–10x token savings for LLM agents)

April 26, 2026 at 4:04 AM · 0 reactions · 0 comments · 0 views

I just open-sourced ast-outline – a fast, zero-dependency CLI tool that extracts the structural outline of source files (classes, functions, signatures, fields, doc comments + line numbers) and drops method bodies. Why? LLM coding agents often burn through context windows reading entire files just to find where a method is defined. ast-outline gives them a lightweight map first: “ handle_request is at L42-L58” – then they can read exactly that range. Built in Rust with: ast-grep (tree-sitter bin

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ast-outline: a parallel structural code summarizer written in Rust (5–10x token savings for LLM agents)

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