nopus

A response-review plugin that uses fixed writing checks to identify overly complicated coding-agent replies and request a clearer rewrite.

In plain words
What is it for?
Use it to review coding-agent prose and flag responses that need simpler wording.
Why use it?
It helps catch responses that are difficult to read before they reach the developer.

Plugin for Claude Code

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.

Claude Code
/plugin marketplace add Vistyy/nopus
agentmods
npx agentmods add plugins/vistyy/nopus/plugin
Clone the repo
git clone --depth 1 https://github.com/Vistyy/nopus

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

nopus 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.

plugin/.claude-plugin/plugin.json · 7 lines

What it actually says

{
  "name": "nopus",
  "version": "1.1.0",
  "description": "Uses deterministic prose checks to flag overly complex coding-agent responses and ask for one clearer rewrite.",
  "author": { "name": "Vistyy" }
}
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 · 7 lines scan A 5335383657b0

Subscribe to this mod's changes

nopus is a plugin published in the GitHub repository Vistyy/nopus (257 stars, last pushed 12d ago), 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.