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/anthropics/defending-code-reference-harness/dnr-huntnpx skills add anthropics/defending-code-reference-harness --skill dnr-huntgit clone --depth 1 https://github.com/anthropics/defending-code-reference-harnessWrote 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/anthropics/defending-code-reference-harness/dnr-hunt)<a href="https://agentmods.dev/skills/anthropics/defending-code-reference-harness/dnr-hunt"><img src="https://agentmods.dev/badge/skills/anthropics/defending-code-reference-harness/dnr-hunt.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 | $0.00109 | $0.04569 |
| Opus 5 | $0.00055 | $0.02285 |
| Sonnet 5 | $0.00022 | $0.00914 |
| Haiku 4.5 | $0.00011 | $0.00457 |
Grade A, and why
dnr-hunt scanned grade A 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- Bash(curl:*) Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
python3 -c "import os,subprocess; p=subprocess.Popen(['python3','app/app.py'],cwd='targets/dnrcanary',env={**os.environ,'DNRCANARY_PORT':'5252'}); print(p.pid)" The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
1 file 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.
- 5d ago First seen · 354 lines · 109 tokens per session scan A 1b7dd7c04d4f
dnr-hunt is a skill published in the GitHub repository anthropics/defending-code-reference-harness (7,403 stars, last pushed 28d ago), with no licence file. It adds 109 tokens to every session and 4,569 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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