Claude Code Agent Monitor is a dashboard that records and displays activity from Claude Code and Codex coding-agent sessions, including tool use and subagent coordination. It is for people who need live visibility into agent work through a web interface or native desktop app. The catalogue entries extend Claude Code with skills, commands, agents, plugins, instructions, hooks, and settings related to the monitor.
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 skills add hoangsonww/Claude-Code-Agent-Monitor --skill file-headersgit clone --depth 1 https://github.com/hoangsonww/Claude-Code-Agent-MonitorWrote 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/hoangsonww/claude-code-agent-monitor/file-headers)<a href="https://agentmods.dev/skills/hoangsonww/claude-code-agent-monitor/file-headers"><img src="https://agentmods.dev/badge/skills/hoangsonww/claude-code-agent-monitor/file-headers/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.
<a href="https://agentmods.dev/skills/hoangsonww/claude-code-agent-monitor/file-headers"><img src="https://agentmods.dev/badge/skills/hoangsonww/claude-code-agent-monitor/file-headers.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00101 | $0.01069 |
| Opus 5.5 | $0.00040 | $0.00428 |
| Sonnet 5.5 | $0.00020 | $0.00214 |
| Haiku 4.5 | $0.00010 | $0.00107 |
Grade A, and why
file-headers 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.
How it starts
The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.
File Headers — Copyright Comment + File Overview
Every applicable source file in this repository starts with a header comment containing a file overview and the exact author line:
@author Son Nguyen <[email protected]>
The name and email must be exactly as above — no variations, no substitutions, no other names. This applies to every coding agent working in this repo (Claude Code, Codex, or any other tool): when you create a new applicable file, write the header first; when you update an existing applicable file that is missing the header, add it as part of the same change.
Applicable files
| Included | Excluded |
|---|---|
*.js, *.ts, *.tsx, *.cjs, *.mjs |
anything under node_modules/, dist/, build/, data/, .worktrees/ |
*.py, *.sh |
vendored/minified files (*.min.js, wiki/mermaid.min.js) |
*.css |
generated files (wiki/i18n-content.js — carries its own AUTO-GENERATED banner) |
snapshots (__snapshots__/), lockfiles, JSON/YAML/Markdown |
Header formats by file type
JS / TS / TSX — server & scripts style (overview inline in @file):
/**
* @file One-to-few-sentence overview of what this file does and why it
* exists. Mention the key contracts or invariants the file owns.
* @author Son Nguyen <[email protected]>
*/
JS / TS / TSX — client style (@file name + @description overview), used
under client/src/:
/**
* @file ComponentName.tsx
* @description What the component/module renders or provides and how it fits
* into the app.
* @author Son Nguyen <[email protected]>
*/
CSS (same block-comment shape as client/src/index.css):
/**
* @file file.css
* @description What these styles cover.
* @author Son Nguyen <[email protected]>
*/
Shell (# block right after the shebang; existing overview comments count —
just make sure the @author line is in the block):
#!/usr/bin/env bash
# script-name.sh — what the script does, one to few lines.
# @author Son Nguyen <[email protected]>
What ships with it
2 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.
- 1mo ago First seen · 117 lines · 101 tokens per session scan A 03f207b605e4
file-headers is a skill published in the GitHub repository hoangsonww/Claude-Code-Agent-Monitor (1,121 stars, last pushed 3d ago), licensed MIT. It adds 101 tokens to every session and 1,069 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-30.
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Use when implementing routing in a React app (NOT Next.js) with TanStack Router — file-based routes, loaders, search params.
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