fallow

fallow is a plugin for Claude Code from fallow-rs/fallow-skills. Its manifest loads nothing; the 4 skills, 1 command, 1 hook it bundles cost 487 tokens per session together, scanned A, original, MIT.

A local code-analysis add-on for JavaScript and TypeScript projects. It examines the codebase and creates summaries of how changes may affect it.

In plain words
What is it for?
Use it to find dead code, code duplication, and complexity in JavaScript or TypeScript codebases, and to understand the likely impact of edits.
Why use it?
It helps reveal unused code, repeated code, and areas that are harder to maintain before you make changes.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to find dead code, code duplication, and complexity in JavaScript or TypeScript codebases, and to understand the likely impact of edits.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add fallow-rs/fallow-skills
/plugin install fallow
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/fallow-rs/fallow-skills

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fallow

README.md
[![agentmods](https://agentmods.dev/badge/plugins/fallow-rs/fallow-skills/fallow/github.svg)](https://agentmods.dev/plugins/fallow-rs/fallow-skills/fallow)
Your own site
<a href="https://agentmods.dev/plugins/fallow-rs/fallow-skills/fallow"><img src="https://agentmods.dev/badge/plugins/fallow-rs/fallow-skills/fallow/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fallow

Your own site · 80×15
<a href="https://agentmods.dev/plugins/fallow-rs/fallow-skills/fallow"><img src="https://agentmods.dev/badge/plugins/fallow-rs/fallow-skills/fallow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 4 skills, 1 command, 1 hook cost 487 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

fallow scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

fallow/.claude-plugin/plugin.json · 23 lines

What it actually says

{
  "name": "fallow",
  "displayName": "Fallow Code Analysis",
  "version": "1.4.26",
  "description": "Local-first codebase intelligence and Impact summaries for TypeScript and JavaScript using fallow",
  "author": {
    "name": "Bart Waardenburg",
    "email": "[email protected]"
  },
  "homepage": "https://fallow.tools",
  "repository": "https://github.com/fallow-rs/fallow-skills",
  "license": "MIT",
  "keywords": [
    "fallow",
    "dead-code",
    "duplication",
    "complexity",
    "static-analysis",
    "javascript",
    "typescript"
  ]
}
Contents

What it installs

The manifest is a name and a version. 4 skills, 1 command, 1 hook travel with it, and installing the plugin installs all of them — 487 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today Changed 459bf4b65824
  2. 2d ago Changed 29737e3ba353
  3. 3d ago Changed 17d86e1007fa
  4. 4d ago Changed 3c14ed135358
  5. 6d ago Changed 82f85813844b
  6. 7d ago Changed 83c92dd7d347
  7. 8d ago Changed 642abaabfde1
  8. 9d ago Changed d126edeb5e11
  9. 10d ago Changed 6383b946df08
  10. 11d ago First seen · 23 lines scan A e9332210290b

Subscribe to this mod's changes

fallow is a plugin published in the GitHub repository fallow-rs/fallow-skills (131 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.