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 agentmods add skills/jxoesneon/ciel/package_managernpx skills add jxoesneon/Ciel --skill package_managergit clone --depth 1 https://github.com/jxoesneon/CielWrote 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/jxoesneon/ciel/package_manager)<a href="https://agentmods.dev/skills/jxoesneon/ciel/package_manager"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/package_manager.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 | $0.00021 | $0.00389 |
| Opus 5 | $0.00010 | $0.00195 |
| Sonnet 5 | $0.00004 | $0.00078 |
| Haiku 4.5 | $0.00002 | $0.00039 |
Grade A, and why
package_manager 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 6d 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
package_manager
Cross-ecosystem package operations.
Operations
pkg.install(name, version?, ecosystem?)— install (mid-risk: system state).pkg.remove(name).pkg.update(name?).pkg.audit()— vulnerability scan.pkg.lock()— freeze versions.pkg.which(name)— which ecosystem provides it.
Ecosystem Selection
Auto-detected by manifest presence (package.json, Cargo.toml, pyproject.toml, etc.) and environment. Explicit override via ecosystem: npm|pip|cargo|apt|brew|yarn|pnpm|bundler|go|rubygems.
I/O Contract
io_contract:
input: { op, "name?", "version?", "ecosystem?" }
output: { installed: [ { name, version } ], warnings }
idempotent: depends
side_effects: [shell, fs, network, state_mutation]
Safety
- System-wide installs (
apt,brew) are always mid-risk; require judge pass. - Dev deps in project are low-risk.
- Dep audits surface CVEs to
dependency_audit/SKILL.md.
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.
- 6d ago First seen · 45 lines · 21 tokens per session scan A f0728e07167a
package_manager is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 6d ago), licensed Apache-2.0. It adds 21 tokens to every session and 389 once invoked, about $0.0001 per session on Opus 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 2026-08-31.
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