Skillget

fallow-skills

agent
Security Audit
Warn
Health Warn
  • License — License: MIT
  • Description — Repository has a description
  • Active repo — Last push 0 days ago
  • Low visibility — Only 6 GitHub stars
Code Pass
  • Code scan — Scanned 5 files during light audit, no dangerous patterns found
Permissions Pass
  • Permissions — No dangerous permissions requested
Purpose
This is a skill pack that teaches AI coding assistants (like Claude Code, Cursor, and Gemini CLI) how to run and interpret analyses for the Fallow codebase analyzer. It provides agents with instructions on how to find unused code, circular dependencies, and complexity hotspots in JavaScript and TypeScript projects.

Security Assessment
The overall risk is Low. The automated code scan reviewed 5 files and found no dangerous patterns, no hardcoded secrets, and no dangerous permissions requested. The tool is essentially a set of instructional files and manifests for AI agents rather than a standalone executable application. It does not appear to access sensitive data, make external network requests, or execute malicious background shell commands.

Quality Assessment
The project appears to be actively maintained, with its last push occurring today. It uses the highly permissive MIT license, which is standard for open-source development tools. The primary drawback is its extremely low community visibility. Having only 6 GitHub stars indicates a very small user base, meaning the tool has not been extensively battle-tested or broadly reviewed by the developer community yet. However, the repository is well-documented and clearly outlines its setup and intended use cases.

Verdict
Safe to use, though developers should keep in mind that the project currently has low community visibility and limited public vetting.
SUMMARY

Agent skills for the JavaScript codebase analyzer. Teaches AI agents how to find unused code, circular deps, duplication, and complexity with fallow. Works with Claude Code, Cursor, Codex, Gemini CLI, and 30+ agents.

README.md

fallow
Agent skills for the JavaScript and TypeScript codebase analyzer.

MIT License CI Agent Skills fallow v2.11.0

Agent skills for fallow, the Rust-native codebase analyzer for JavaScript and TypeScript. Fallow finds unused code, circular dependencies, code duplication, complexity hotspots, and architecture boundary violations. 84 framework plugins, zero configuration, sub-second performance. Works with any agent that supports the Agent Skills specification: Claude Code, Cursor, OpenAI Codex, Windsurf, GitHub Copilot, Gemini CLI, Amp, and 30+ more.

Linters enforce style. Formatters enforce consistency. Fallow enforces relevance. Linters work file by file. TypeScript works type by type. Neither builds the full module graph, so neither can see what nothing depends on. Fallow does, in milliseconds. These skills teach agents how to use fallow effectively: which commands to run, what flags to use, how to interpret output, and how to avoid common pitfalls.

Quick Start

Claude Code

/install fallow-rs/fallow-skills

Cursor

git clone https://github.com/fallow-rs/fallow-skills.git ~/.cursor/skills/fallow-skills

OpenAI Codex

git clone https://github.com/fallow-rs/fallow-skills.git ~/.agents/skills/fallow-skills

Windsurf

git clone https://github.com/fallow-rs/fallow-skills.git ~/.codeium/windsurf/skills/fallow-skills

GitHub Copilot

git clone https://github.com/fallow-rs/fallow-skills.git .github/skills/fallow-skills

Gemini CLI

gemini skills install https://github.com/fallow-rs/fallow-skills.git

Amp

git clone https://github.com/fallow-rs/fallow-skills.git ~/.config/agents/skills/fallow-skills
Other agents

Clone or copy the skill directory into your agent's skills location. This skill follows the open Agent Skills specification and works with any compatible agent.

Prerequisites

Fallow must be installed in the target project:

npm install -g fallow    # prebuilt binaries
npx fallow dead-code         # or run without installing

See the installation guide for all options including cargo install fallow-cli.

Available Skills

Skill Description Trigger phrases
fallow Codebase analysis for JS/TS: unused code, circular deps, duplication, complexity "find dead code", "unused exports", "find duplicates", "check code health"

What's Included

fallow

Category What it does
Dead Code Find unused files, exports, types, dependencies, enum/class members (15 issue types)
Duplication Find code clones with 4 modes: strict, mild, weak, semantic
Complexity Function complexity analysis, hotspot detection, health scores
Auto-Fix Remove unused exports and dependencies with dry-run preview
CI GitHub Actions, SARIF upload, baseline comparison, PR-scoped checks
Monorepo Per-workspace analysis with cross-package resolution
Debug Trace export usage chains, file edges, and dependency usage

Reference Documentation

  • CLI Reference: all 10 commands, flags, JSON output structure, config format
  • Gotchas: 19 pitfalls with WRONG/CORRECT examples
  • Patterns: 14 workflow recipes for CI, monorepos, migration, incremental adoption

Example Prompts

Once installed, you can use natural language:

  • "Find all dead code in this project"
  • "Are there any unused dependencies?"
  • "Find code duplication in the codebase"
  • "Clean up unused exports"
  • "Set up a CI check for dead code"
  • "Check the complexity of this codebase"
  • "Why is this export flagged as unused?"
  • "Check if this PR introduces dead code"
  • "Find unused files in the payments package"
  • "What's the duplication percentage?"

How It Works

User: "Find all unused exports"
  ↓
Agent loads fallow skill
  ↓
Skill instructs: run `fallow dead-code --format json --quiet --unused-exports`
  ↓
Agent executes command, parses JSON output
  ↓
Agent summarizes findings with file paths and line numbers

The skill provides agents with:

  1. Command knowledge: which fallow command + flags to use for each task
  2. Output parsing: how to interpret JSON results
  3. Guardrails: always dry-run before fix, never run watch, use --yes in non-TTY
  4. Debugging: how to trace false positives with --trace

Contributing

See CLAUDE.md for repository structure, skill creation guidelines, and quality standards.

Related

License

MIT. See LICENSE for details.

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