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 olafkfreund/nixos_config --skill cosmic-ui-design-skillgit clone --depth 1 https://github.com/olafkfreund/nixos_configWrote 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/olafkfreund/nixos_config/cosmic-ui-design-skill)<a href="https://agentmods.dev/skills/olafkfreund/nixos_config/cosmic-ui-design-skill"><img src="https://agentmods.dev/badge/skills/olafkfreund/nixos_config/cosmic-ui-design-skill/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/olafkfreund/nixos_config/cosmic-ui-design-skill"><img src="https://agentmods.dev/badge/skills/olafkfreund/nixos_config/cosmic-ui-design-skill.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 | $0.00000 | $0.05621 |
| Opus 5.5 | $0.00000 | $0.02248 |
| Sonnet 5.5 | $0.00000 | $0.01124 |
| Haiku 4.5 | $0.00000 | $0.00562 |
Grade E, and why
cosmic-ui-design-skill scanned grade E with 4 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 25d 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.
Strips warnings and disclaimersmediumAnti-refusal
Omitting safety caveats hides risk from the user and is a common jailbreak preamble.
- [ ] Passes `just check` without warnings Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt install cargo cmake just libexpat1-dev \ Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh The source is not reproduced here
Licensed GPL-3.0
The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
7 files 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.
- 25d ago First seen · 934 lines · 0 tokens per session scan E cb8180f7e646
cosmic-ui-design-skill is a skill published in the GitHub repository olafkfreund/nixos_config (30 stars, last pushed today), licensed GPL-3.0. It costs nothing until one of its globs matches a file; then it loads 5,621 tokens. A static security scan graded it E with 4 findings (strips warnings and disclaimers, asks for root, downloads and executes remote code). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-24.
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