Codebase intelligence for TypeScript and JavaScript. Free static analysis of code and styles: unused code, duplication, circular deps, complexity hotspots, architecture boundaries, design-system drift. Optional paid runtime layer (Fallow Runtime): hot-path review and cold-path deletion evidence from real production traffic.
Fallow is a command-line static-analysis tool that builds a dependency graph of TypeScript and JavaScript code to identify unused code, duplication, circular dependencies, complexity hotspots, boundary violations, and styling drift. It is for developers reviewing codebases and verifying changes, with catalogue entries that add agent, editor, and workflow integrations.
Latest release v3.22.0 — v3.22.0: honest answers from surfaces that were guessing · 1 Sept 2026
These files are fallow-rs/fallow's own configuration. They tell Claude Code, Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.
AGENTS.md A 1,127 tok CLAUDE.md A 370 tok .claude/settings.json A — .claude/settings.json A — .claude/settings.json A — .claude/settings.json A — .agents/skills/address-pr-comments/SKILL.md A 45 tok .agents/skills/binary-loop/SKILL.md A 27 tok .agents/skills/browser-smoke-review/SKILL.md A 49 tok .agents/skills/ci-formats-review/SKILL.md A 45 tok .agents/skills/cli-output-review/SKILL.md A 43 tok .agents/skills/conformance-loop/SKILL.md A 28 tok .agents/skills/coverage-loop/SKILL.md A 29 tok .agents/skills/debug-false-positive/SKILL.md A 34 tok .agents/skills/fallow/SKILL.md C 114 tok .agents/skills/fix-gh-actions/SKILL.md A 44 tok .agents/skills/github-action-review/SKILL.md A 48 tok .agents/skills/gitlab-ci-review/SKILL.md A 39 tok .agents/skills/implement/SKILL.md A 36 tok .agents/skills/json-output-review/SKILL.md A 39 tok .agents/skills/lsp-review/SKILL.md A 39 tok .agents/skills/mcp-review/SKILL.md A 35 tok .agents/skills/open-draft-pr/SKILL.md A 47 tok .agents/skills/panel-review-loop/SKILL.md A 28 tok .agents/skills/panel-review/SKILL.md A 34 tok .agents/skills/perf-loop/SKILL.md A 22 tok .agents/skills/review/SKILL.md A 29 tok .agents/skills/rust-review/SKILL.md A 50 tok .agents/skills/ship/SKILL.md A 42 tok .agents/skills/sig-audit-loop/SKILL.md A 31 tok .agents/skills/sig-audit/SKILL.md A 24 tok .agents/skills/sweep/SKILL.md A 28 tok .agents/skills/team-assembly/SKILL.md A 27 tok .agents/skills/triage-issue/SKILL.md A 53 tok .agents/skills/vscode-review/SKILL.md A 35 tok .agents/agents/_template.md A 13 tok .agents/agents/ci-formats-reviewer.md A 28 tok .agents/agents/cli-output-reviewer.md A 20 tok .agents/agents/json-output-reviewer.md A 21 tok .agents/agents/lsp-reviewer.md A 29 tok .agents/agents/mcp-reviewer.md A 22 tok .agents/agents/rust-reviewer.md A 16 tok .agents/agents/user-panel.md A 32 tok .agents/agents/vscode-reviewer.md A 26 tok .agents/agents/ci-integration-reviewer.md A —