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.
npx agentmods add skills/leejuoh/claude-code-zero/context-health-visualnpx skills add LeeJuOh/claude-code-zero --skill context-health-visualgit clone --depth 1 https://github.com/LeeJuOh/claude-code-zeroWrote 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.
[](https://agentmods.dev/skills/leejuoh/claude-code-zero/context-health-visual)<a href="https://agentmods.dev/skills/leejuoh/claude-code-zero/context-health-visual"><img src="https://agentmods.dev/badge/skills/leejuoh/claude-code-zero/context-health-visual.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00062 | $0.08557 |
| Opus 5 | $0.00031 | $0.04279 |
| Sonnet 5 | $0.00012 | $0.01711 |
| Haiku 4.5 | $0.00006 | $0.00856 |
Grade B, and why
context-health-visual scanned grade B with 2 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 5d 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.
Reads agent configuration directorieslowAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
command-type `InstructionsLoaded` hook to `~/.claude/settings.json` that logs to Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Recursive force deletemediumDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
allowed-tools: Read, Glob, Grep, Agent, AskUserQuestion, Artifact, Skill(artifact-design), Bash(node *), Bash(open *), Bash(rm -rf /tmp/env-health-*) Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
How it starts
The opening of the file, as written. The whole thing — 558 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Environment Health
Diagnose the user's Claude Code environment health. Outputs either an inline markdown report or a self-contained interactive HTML dashboard. Covers 10 diagnostic areas — 6 graded scores against official thresholds (§4 splits into §4a at-rest and §4b post-compact; §9 Skill Security Scan uses security baselines rather than docs-cited thresholds) plus 5 observational areas (raw numbers, no tier).
Instructions
Input Parsing
Parse these arguments:
| Flag | Values | Default | Meaning |
|---|---|---|---|
--format |
html | md |
html |
Output mode. html generates a full interactive dashboard (default — recommended). md produces an inline markdown report for non-browser contexts or chat pasting |
--lang |
ISO code (en, ko, fr, etc.) |
detected | Report language. Falls back to detecting the user message language, then en |
--use-instructions-loaded-hook |
(flag) | off | Guide the user through temporarily enabling the InstructionsLoaded hook for file-level ground-truth data, then offer to revert it |
--local |
(flag) | off | Force the local design-system dashboard — capable HTML publishes to an Artifact by default |
--artifact |
(flag) | retained no-op alias | Already the default on capable HTML — kept so muscle memory / natural-language triggers don't break |
Channel is decided by the shared contract, not re-derived here — read
${CLAUDE_PLUGIN_ROOT}/references/design-system/channel-decision.md (SSOT, restates ADR 0009) for the
(Format × capable) → channel table, flag semantics, and the optimistic-try-then-regenerate rule.
The short version: capable HTML publishes to a claude.ai Artifact by default; --local forces the
local dashboard; md and non-capable sessions stay local. Both flags apply to --format html only;
--artifact combined with --format md is ignored and the normal markdown path runs. If --local
and --artifact are both signalled, --local wins. --local also triggers on natural-language
equivalents ("keep it local", "don't publish"); --artifact still triggers on "as an artifact",
"publish as a link", "share as a URL" — in whatever language the user writes.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 558 lines · 62 tokens per session scan B 97c3976d1032
context-health-visual is a skill published in the GitHub repository LeeJuOh/claude-code-zero (51 stars, last pushed 6d ago), licensed MIT. It adds 62 tokens to every session and 8,557 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (reads agent configuration directories, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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