argus AGENTS.md

Instructions for using Argus, a design-analysis platform, with an AI coding agent. Argus can inspect a webpage and evaluate its visual and accessibility quality.

In plain words
What is it for?
Use it to inspect pages or components, score spacing, typography, color, hierarchy, accessibility, and consistency, and get specific design suggestions.
Why use it?
It gives the agent structured information about how a page looks and works instead of relying only on visual guesswork.

Instructions file for CodexOpenCode

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 instructions/dragoon0x/argus/agents-md
Clone the repo
git clone --depth 1 https://github.com/Dragoon0x/argus

Made for: Codex, OpenCode.

Per session 1,213 This file is loaded in full into every session.
When invoked 1,213 The same file — it is already loaded in full.
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 $0.01213 $0.01213
Opus 5 $0.00607 $0.00607
Sonnet 5 $0.00243 $0.00243
Haiku 4.5 $0.00121 $0.00121

Measured 2d ago against content hash 598fd3dd03dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

argus AGENTS.md 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 2d 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.

AGENTS.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Argus Agent Context

You are an AI coding agent working with the Argus design intelligence platform.

Your capabilities via Argus

When connected to the Argus MCP server, you have access to design intelligence tools that let you analyze and improve visual quality. These tools return structured, deterministic results — not opinions.

Available MCP tools

design.inspect

Analyze a page or component's visual structure.

Input: { url?: string, selector?: string, html?: string } Output: PageSnapshot with element positions, computed styles, accessibility data, and structural relationships.

Use this when you need to understand what's visually happening on a page before making changes.

design.score

Score design quality against established principles.

Input: { snapshot: PageSnapshot, categories?: string[], threshold?: number } Output: ScoreReport with per-rule findings, category scores, and an aggregate score (0–100).

Categories: spacing, typography, color, hierarchy, accessibility, consistency.

Use this to evaluate whether your generated UI meets quality standards before presenting it to the user.

design.suggest

Get specific, actionable improvement suggestions.

Input: { snapshot: PageSnapshot, maxSuggestions?: number, focus?: string } Output: Array of Suggestion objects with element selectors, CSS changes, and expected score improvement.

Use this when the score is below threshold and you need concrete fixes.

design.apply

Apply a design fix and verify the improvement.

Input: { selector: string, changes: CSSChanges, verify?: boolean } Output: { applied: boolean, before: Score, after: Score, delta: number }

Use this to fix issues identified by design.suggest. The verify flag re-scores after applying to confirm improvement.

design.compare

Compare two states of a page.

Input: { before: PageSnapshot, after: PageSnapshot } Output: DiffReport with structural changes, score deltas, and visual regression indicators.

Read the full file on GitHub · 136 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. 2d ago First seen · 136 lines · 1,213 tokens per session scan A 598fd3dd03dc

Subscribe to this mod's changes

argus AGENTS.md is an instructions file published in the GitHub repository Dragoon0x/argus (4 stars, last pushed 4mo ago), licensed MIT. It adds 1,213 tokens to every session, about $0.0061 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.