ast-outline is an open-source CLI tool that enables AI coding agents to extract precise code context, outlines, and symbols from repositories. It uses tree-sitter for fast, stateless parsing, supporting efficient code navigation and analysis for developers building AI-powered coding tools.
ast-outline sits in PulseGate's CLI tools & terminal category. It focuses on allowing AI coding agents to efficiently extract relevant code context and structure without reading entire files. It is built as an open-source project for AI coding agent developers. ast-outline is open source under the Apache-2.0 license. The product ships for the command line, and it can be self-hosted.
Behind ast-outline is ast-outline Maintainers, and the product first shipped in 2026. Development happens publicly on GitHub with 31 stars and 122 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — ast-outline occupies a relatively distinct niche. Key capabilities include repo map, file outline, and symbol extraction.
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