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 opencue/cuecards --skill updategit clone --depth 1 https://github.com/opencue/cuecardsWrote 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/opencue/cuecards/update)<a href="https://agentmods.dev/skills/opencue/cuecards/update"><img src="https://agentmods.dev/badge/skills/opencue/cuecards/update.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 5.1 | $0.00069 | $0.00468 |
| Opus 5 | $0.00034 | $0.00234 |
| Sonnet 5 | $0.00014 | $0.00094 |
| Haiku 4.5 | $0.00007 | $0.00047 |
Grade C, and why
update-skill scanned grade C 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 2d 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf /tmp/agent-skills Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s https://raw.githubusercontent.com/promptingcompany/agent-skills/main/skills/<skill-name>/metadata.json What it actually says
Update an Installed Skill
Overview
Check whether an installed skill is out of date and update it to the latest version.
Prerequisites
- Skill previously installed to
~/.claude/skills/or vianpx skills add - Internet access to fetch the latest version from upstream
Required Workflow
Follow all steps in order.
Step 1 — Check installed version
Read the metadata.json of the installed skill:
cat ~/.claude/skills/<skill-name>/metadata.json
Note the version field.
Step 2 — Check upstream version
Fetch the latest metadata.json directly from the repo:
curl -s https://raw.githubusercontent.com/promptingcompany/agent-skills/main/skills/<skill-name>/metadata.json
Compare the version fields. If they match, tell the user: "Your skill is already up to date (v[version])." and stop.
Step 3 — Update
Option A — via the skills CLI (recommended):
npx skills add https://github.com/promptingcompany/agent-skills --skill <skill-name>
This overwrites the local copy with the latest version.
Option B — manual:
git clone https://github.com/promptingcompany/agent-skills /tmp/agent-skills
cp -r /tmp/agent-skills/skills/<skill-name> ~/.claude/skills/
rm -rf /tmp/agent-skills
Step 4 — Confirm
Re-read the installed metadata.json and confirm the version now matches upstream:
cat ~/.claude/skills/<skill-name>/metadata.json
Tell the user: "Updated to v[new-version]."
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.
- 2d ago First seen · 81 lines · 69 tokens per session scan C a909c130bfc9
update-skill is a skill published in the GitHub repository opencue/cuecards (5 stars, last pushed yesterday), licensed MIT. It adds 69 tokens to every session and 468 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.
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