Borrowing it
Nothing to install: this file belongs to ArcBlock/agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ArcBlock/agent-skills/main/.claude/skills/simple-skills-manager/SKILL.mdgit clone --depth 1 https://github.com/ArcBlock/agent-skillsWrote 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/arcblock/agent-skills/simple-skills-manager)<a href="https://agentmods.dev/skills/arcblock/agent-skills/simple-skills-manager"><img src="https://agentmods.dev/badge/skills/arcblock/agent-skills/simple-skills-manager/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/arcblock/agent-skills/simple-skills-manager"><img src="https://agentmods.dev/badge/skills/arcblock/agent-skills/simple-skills-manager.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 | $0.00034 | $0.03687 |
| Opus 5 | $0.00017 | $0.01843 |
| Sonnet 5 | $0.00007 | $0.00737 |
| Haiku 4.5 | $0.00003 | $0.00369 |
Grade D, and why
simple-skills-manager scanned grade D 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 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.
cat ~/.claude/simple-skills-manager-repos/{group}/path.txt Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf ~/.claude/simple-skills-manager-backup-last-skills How it starts
The opening of the file, as written. The whole thing — 372 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Simple Skills Manager
Manage skill tips in ~/.claude/skills/ that point to skills from local paths or git repositories, enabling dynamic invocation via /{group}-{skill-name}.
Note: We use hyphen - as separator instead of colon : because Windows paths don't support colons in filenames.
Constants
- Repos directory:
~/.claude/simple-skills-manager-repos/ - Skills directory:
~/.claude/skills/ - Backup directory:
~/.claude/simple-skills-manager-backup-last-skills/
Workflow
Step 1: Ask Operation Type
First, ask the user what operation they want to perform:
{
"questions": [{
"question": "What operation would you like to perform?",
"header": "Operation",
"options": [
{"label": "Add (Recommended)", "description": "Add skills from a local path or git repository"},
{"label": "Update", "description": "Update an existing skill group (re-sync from source)"},
{"label": "Remove", "description": "Remove an existing skill group"}
],
"multiSelect": false
}]
}
Step 2: Collect Information Based on Operation
For "Add" Operation
Ask user to directly input the source path or git URL:
{
"questions": [{
"question": "Please enter the local path or git URL for the skills:",
"header": "Source",
"options": [
{"label": "Example: /path/to/skills", "description": "Local directory containing SKILL.md files"},
{"label": "Example: https://github.com/user/repo.git", "description": "Git repository URL (will be cloned)"}
],
"multiSelect": false
}]
}
The user will select "Other" and type the actual path or URL. The system will auto-detect the source type:
- Git URL: starts with
http://,https://,git@, or ends with.git - Local path: everything else (treat as filesystem path)
After getting the source, ask for the group name:
{
"questions": [{
"question": "What group name should be used as prefix? (e.g., 'mygroup' creates '/mygroup-skill-name')",
"header": "Group",
"options": [
{"label": "Use folder name", "description": "Use the source folder/repo name as group"},
{"label": "Custom", "description": "Enter a custom group name"}
],
"multiSelect": false
}]
}
What ships with it
1 file 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.
- 9d ago First seen · 372 lines · 34 tokens per session scan D 47d674f84904
simple-skills-manager is a skill published in the GitHub repository ArcBlock/agent-skills (5 stars, last pushed yesterday), licensed MIT. It adds 34 tokens to every session and 3,687 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it D 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 2026-08-31.
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