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/burin-labs/harn/rust-scriptingnpx skills add burin-labs/harn --skill rust-scriptinggit clone --depth 1 https://github.com/burin-labs/harnWhat 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 | $0.00010 | $0.00087 |
| Opus 5 | $0.00005 | $0.00044 |
| Sonnet 5 | $0.00002 | $0.00017 |
| Haiku 4.5 | $0.00001 | $0.00009 |
Grade A, and why
rust-scripting 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 3d 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
Rust Scripting
Use cargo run --bin harn.
Session: ${HARN_SESSION_ID}
Dir: ${HARN_SKILL_DIR}
Args: [$ARGUMENTS]
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.
- 3d ago First seen · 14 lines · 10 tokens per session scan A f6e4d8afe50a
rust-scripting is a skill published in the GitHub repository burin-labs/harn (20 stars, last pushed 3d ago), licensed Apache-2.0. It adds 10 tokens to every session and 87 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 2026-08-30.
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