weed

weed is a skill for Claude Code from juxt/claude-plugins. It costs 71 tokens per session (2,109 once invoked), scanned A, a copy of weed, MIT.

A code-review tool for Allium, a specification language used to describe how software should behave. It compares those specifications with the implementation code.

In plain words
What is it for?
Use it to audit specification alignment, detect specification drift or violations, and help bring the specifications and code back into agreement.
Why use it?
It helps find cases where the written requirements and the actual code no longer match.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents.

Part of the allium plugin — 7 skills, 5 agents, 2 hooks shipped together

Good fit Use it to audit specification alignment, detect specification drift or violations, and help bring the specifications and code back into agreement.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/juxt/claude-plugins/weed
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.

Any agent
npx skills add juxt/claude-plugins --skill weed
Clone the repo
git clone --depth 1 https://github.com/juxt/claude-plugins

Made for: Claude Code.

Or install allium, the plugin that ships this one along with the rest of its 7 skills, 5 agents, 2 hooks.

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 weed

README.md
[![agentmods](https://agentmods.dev/badge/skills/juxt/claude-plugins/weed/github.svg)](https://agentmods.dev/skills/juxt/claude-plugins/weed)
Your own site
<a href="https://agentmods.dev/skills/juxt/claude-plugins/weed"><img src="https://agentmods.dev/badge/skills/juxt/claude-plugins/weed/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 weed

Your own site · 80×15
<a href="https://agentmods.dev/skills/juxt/claude-plugins/weed"><img src="https://agentmods.dev/badge/skills/juxt/claude-plugins/weed.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,109 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00071 $0.02109
Opus 5.5 $0.00028 $0.00844
Sonnet 5.5 $0.00014 $0.00422
Haiku 4.5 $0.00007 $0.00211

Measured 1mo ago against content hash 63199129376f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

weed 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 1mo ago.

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.

Origin

This is a copy

100% identical to weed — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/allium/skills/weed/SKILL.md · 132 lines

How it starts

The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Weed

You weed the Allium garden. You compare .allium specifications against implementation code, find where they have diverged, and help resolve the divergences.

Interaction modes

This skill runs in two modes. Every instruction below that asks, prompts or checks with the user follows the mode:

  • Interactive — running inline in a conversation. Ask the user directly and wait for the answer.
  • Non-interactive — running as the weed subagent (for example inside the Allium loop), where no user is reachable. Do not guess an answer: report each question as an open finding in your output (and, when updating the spec, record it as an open question declaration), then continue with the work that does not depend on it.

Startup

  1. Read language reference for the Allium syntax and validation rules.
  2. Read the relevant .allium files (search the project to find them if not specified).
  3. If the allium CLI is available, run allium check against the files to verify they are syntactically correct.
  4. Read the corresponding implementation code.

Modes

You operate in one of three modes, determined by the caller's request:

Check. Read both spec and code. Report every divergence with its location in both. Do not modify anything.

Update spec. Modify the .allium files to match what the code actually does. The spec becomes a faithful description of current behaviour.

Update code. Modify the implementation to match what the spec says. The code becomes a faithful implementation of specified behaviour.

If no mode is specified, default to check and report all findings.

How you work

For each entity, rule or trigger in the spec, find the corresponding implementation. For each significant code path, check whether the spec accounts for it. Report mismatches in both directions: spec says X but code does Y, and code does Z but the spec is silent.

Process-level checks

Beyond construct-by-construct comparison, check process-level properties:

Read the full file on GitHub · 132 lines

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. 1mo ago First seen · 132 lines · 71 tokens per session scan A 63199129376f

Subscribe to this mod's changes

weed is a skill published in the GitHub repository juxt/claude-plugins (10 stars, last pushed yesterday), licensed MIT. It adds 71 tokens to every session and 2,109 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to weed, differing in 0 lines, and is treated as a copy.

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