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/harn-scriptingnpx skills add burin-labs/harn --skill harn-scriptinggit clone --depth 1 https://github.com/burin-labs/harnWrote 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/burin-labs/harn/harn-scripting)<a href="https://agentmods.dev/skills/burin-labs/harn/harn-scripting"><img src="https://agentmods.dev/badge/skills/burin-labs/harn/harn-scripting.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 | $0.00024 | $0.00097 |
| Opus 5 | $0.00012 | $0.00048 |
| Sonnet 5 | $0.00005 | $0.00019 |
| Haiku 4.5 | $0.00002 | $0.00010 |
Grade A, and why
harn-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 5d 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
Before writing or editing .harn code, list the available inner skills with
harn skill list --json and fetch the narrowest match with
harn skill get <name> --full. The canonical content ships in the binary
itself, so the docs always match the binary version in use.
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.
- 5d ago First seen · 10 lines · 24 tokens per session scan A b259089ec201
harn-scripting is a skill published in the GitHub repository burin-labs/harn (20 stars, last pushed today), licensed Apache-2.0. It adds 24 tokens to every session and 97 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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