kantord/headson

Structure-aware parsing preserves the JSON/YAML tree shape even under truncation, while source code mode uses indentation heuristics to extract representative lines while keeping them atomic. Available as both a Rust CLI and Python library, it supports multi-file workflows with git-aware ordering, grep-style filtering to guarantee match visibility, and strict byte/character budgets that can be applied per-file or globally across directories.

244 stars and 195 monthly downloads.