AI Agent Skills is a curated library and package manager for installing, organizing, and creating skills for compatible AI coding agents. It is for developers who want to manage reusable agent instructions through a command-line or terminal interface. The catalogue skills and agents are examples of the kind of add-ons it helps manage.
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 MoizIbnYousaf/Ai-Agent-Skills --skill update-installed-skillsgit clone --depth 1 https://github.com/MoizIbnYousaf/Ai-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/moizibnyousaf/ai-agent-skills/update-installed-skills)<a href="https://agentmods.dev/skills/moizibnyousaf/ai-agent-skills/update-installed-skills"><img src="https://agentmods.dev/badge/skills/moizibnyousaf/ai-agent-skills/update-installed-skills/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/moizibnyousaf/ai-agent-skills/update-installed-skills"><img src="https://agentmods.dev/badge/skills/moizibnyousaf/ai-agent-skills/update-installed-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 6 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 17 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 26 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 32 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 38 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 44 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 50 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00031 | $0.00356 |
| Opus 5.5 | $0.00012 | $0.00142 |
| Sonnet 5.5 | $0.00006 | $0.00071 |
| Haiku 4.5 | $0.00003 | $0.00036 |
Grade A, and why
update-installed-skills 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.
What it actually says
Update Installed Skills
Goal
Keep installed skills current without breaking the agent's workflow or silently overwriting local customizations.
Guardrails
- Always use
--dry-runbefore running a real update. - Check what is currently installed before updating:
npx ai-agent-skills list --installed. - Never update all skills at once in production without reviewing the dry-run output.
- Use
--format jsonto capture structured update results for logging.
Workflow
- List currently installed skills.
npx ai-agent-skills list --installed --format json --fields name
- Check for available updates.
npx ai-agent-skills check
- Dry-run the update.
npx ai-agent-skills sync <skill-name> --dry-run
- Apply the update after reviewing.
npx ai-agent-skills sync <skill-name>
- For bulk updates, review each skill's dry-run output.
npx ai-agent-skills sync --all --dry-run
Gotchas
- Skills installed from GitHub will attempt a fresh clone during sync. If the upstream repo is gone, the update will fail gracefully.
- Manually edited SKILL.md files will be overwritten by sync. Back up customizations before syncing.
- The
checkcommand makes network requests to verify upstream sources. It may be slow or fail if sources are unreachable.
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 · 58 lines · 31 tokens per session scan A 7fabdb1568bc
update-installed-skills is a skill published in the GitHub repository MoizIbnYousaf/Ai-Agent-Skills (1,152 stars, last pushed 1mo ago), licensed MIT. It adds 31 tokens to every session and 356 once invoked, about $0.0001 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.
Other skills, from other repositories
user-research-cookiy
End-to-end user research assistant — qualitative and quantitative. Use this skill whenever the user mentions user research, user interviews, discussion guides, interview guides, research plans, qualitative research, quantitative research, user surveys, survey design, usability studies, participant recruitment…
Agent Browser Automation
Fast Rust-based headless browser automation CLI with Node.js fallback for AI agents, featuring navigation, clicking, typing, snapshots, and structured commands optimized for agent workflows.
pad
Work with the user's Pad workspaces through the Pad tools. Find, read, create and update tasks, bugs, ideas, plans and docs; comment on them, link them, and see what to work on next. Use it whenever the user talks about their Pad projects or items.
promo-video-pipeline
A workflow for producing promotional videos with Remotion, a React-based tool that renders video from code. It splits a storyboard into scenes, assigns work to separate agents, combines the results, and checks the actual rendered video.
connect
Connect this session to Pad's push/watch stream — consent to receive pushes, and run the workspace's on-session-start ritual on first connect.
status
Project status at a glance — dashboard, active plans, attention items.