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 a2ngerer/claude_onboarding_agent --skill upgrade-setupgit clone --depth 1 https://github.com/a2ngerer/claude_onboarding_agentWrote 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/a2ngerer/claude_onboarding_agent/upgrade-setup)<a href="https://agentmods.dev/skills/a2ngerer/claude_onboarding_agent/upgrade-setup"><img src="https://agentmods.dev/badge/skills/a2ngerer/claude_onboarding_agent/upgrade-setup/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/a2ngerer/claude_onboarding_agent/upgrade-setup"><img src="https://agentmods.dev/badge/skills/a2ngerer/claude_onboarding_agent/upgrade-setup.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00080 | $0.05084 |
| Opus 5 | $0.00040 | $0.02542 |
| Sonnet 5 | $0.00016 | $0.01017 |
| Haiku 4.5 | $0.00008 | $0.00508 |
Grade B, and why
upgrade-setup scanned grade B with 1 finding 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 9d 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 directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
- `./.claude/settings.json` (if the skill generates one) How it starts
The opening of the file, as written. The whole thing — 404 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Upgrade Setup — Selective Best-Practice Refresh
Power-user / internal tool. Normal users run
/checkup, which decides whether/upgrade-setupis the right action and invokes it automatically. Running/upgrade-setupdirectly still works — use it when you already know you want to re-apply current best practices.
Use this skill to bring an existing setup up to the current plugin's defaults without destroying user customizations. It is the non-audit counterpart to /audit-setup:
| Skill | Read-only | Applies changes | Per-change confirmation | Backup |
|---|---|---|---|---|
/audit-setup |
yes | no | n/a | n/a |
/upgrade-setup |
no | yes | yes (y/n/all/skip-rest) | yes |
This skill is a protocol. Run every pass in order. Do not skip passes, and do not apply changes before Pass 3 confirms each one.
Language
Detect language from the user's first message in this invocation and respond in it throughout. All file content written to disk stays in English (see the repo language rule in CLAUDE.md).
Argument parsing
The invocation may contain --dry-run anywhere in the argument string (as a flag, not a value).
- If present: set
dry_run: true. Pass 4 prints every diff but writes no files. - Otherwise: set
dry_run: false. Pass 4 runs normally.
If any other argument is passed, ignore it silently (forward compatibility — do not error).
Pass 1 — Detect the existing setup
Step 1.1 — Read the meta file
Read ./.claude/onboarding-meta.json if it exists. Expected shape:
{
"setup_type": "coding",
"skills_used": ["coding-setup"],
"plugin_version": "0.9.0",
"installed_at": "2026-04-01T12:00:00Z",
"upgraded_at": null
}
If the file parses and setup_type is a recognized slug (one of: coding, data-science, design, knowledge-base, devops, content-voice, office, research, academic-writing, web-development), set:
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.
- 9d ago First seen · 404 lines · 80 tokens per session scan B 81a756f4660b
upgrade-setup is a skill published in the GitHub repository a2ngerer/claude_onboarding_agent (5 stars, last pushed today), licensed MIT. It adds 80 tokens to every session and 5,084 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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