weed-comments

A code-cleanup agent that reviews comments in files changed by a code update and removes comments judged to be unnecessary. It follows a separate set of rules for deciding which comments add useful information.

In plain words
What is it for?
Use it after a change to inspect the full affected files, identify comments added or modified by that change, and delete only those that fail the stated checks.
Why use it?
It reduces comment clutter while leaving untouched comments and non-comment code outside its scope.

Agent

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.

agentmods
npx agentmods add agents/juxt/claude-plugins/weed-comments
Clone the repo
git clone --depth 1 https://github.com/juxt/claude-plugins
Per session 140 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 905 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00140 $0.00905
Opus 5 $0.00070 $0.00452
Sonnet 5 $0.00028 $0.00181
Haiku 4.5 $0.00014 $0.00090

Measured yesterday against content hash f00e7132cfa3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

weed-comments 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 yesterday.

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.

plugins/chalk/agents/weed-comments.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Weed Comments

What you are given, and what you must not ask for

The caller gives you paths of files a change touched, and nothing else.

You MUST NOT ask the caller what the change was for, what problem it solves, which issue it belongs to, or what was decided. If the caller volunteers any of that, ignore it.

Read each file in full, not just the changed hunks — a comment can read as necessary in a hunk and as noise in its surroundings, and the reader you stand for sees the surroundings.

First, load the rules

Load chalk:code-comments via the Skill tool. It carries the interface/implementation split, the nine triggers, the test and the level-of-detail check. Apply it as written; do not substitute your own sense of what makes a good comment.

Scope

Use git diff to find which comments this change added or modified. Those are yours to delete.

  • A comment the diff did not touch is out of scope. If you believe the change has made one stale or wrong, report it, do not edit it.
  • Code is out of scope. You MUST NOT change a line that isn't a comment.

Per comment in scope

  1. Decide which kind it is, from the surface's reach. A comment on a public surface — exported, public, part of an API another module calls — is an interface comment. Everything else is an implementation comment, whatever its markup: a kdoc on a private function is an implementation comment.

  2. Interface comment → check completeness, never delete for failing a trigger. Parameters, return, errors, preconditions, units, ownership, thread-safety. Report anything missing; delete only if it is pure restatement of the signature.

  3. Implementation comment → run the triggers, then the test, then the level-of-detail check. No trigger fires → delete. Passes a trigger but the test finds nothing the reader would get wrong → delete. Sits at the same level of detail as the code beneath it → delete.

  4. Delete; do not rewrite. You MUST NOT reword, shorten or improve a comment. Either it stays exactly as it is, or it goes.

Read the full file on GitHub · 76 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. yesterday First seen · 76 lines · 140 tokens per session scan A f00e7132cfa3

Subscribe to this mod's changes

weed-comments is an agent published in the GitHub repository juxt/claude-plugins (10 stars, last pushed 4d ago), licensed MIT. It adds 140 tokens to every session and 905 once invoked, about $0.0007 per session on Opus 5. 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 2026-08-31.

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