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 OutlineDriven/odin-claude-plugin --skill duetgit clone --depth 1 https://github.com/OutlineDriven/odin-claude-pluginWrote 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/outlinedriven/odin-claude-plugin/duet)<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/duet"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/duet.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Tool Misuse · line 107 Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
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 | $0.00028 | $0.03065 |
| Opus 5 | $0.00014 | $0.01533 |
| Sonnet 5 | $0.00006 | $0.00613 |
| Haiku 4.5 | $0.00003 | $0.00307 |
Grade A, and why
duet 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Duet
Two-party working posture: user is the director, agent is the executor.
Why this exists
Working with agents has two chronic failure modes:
- Review bottleneck: the agent does everything, the user becomes a reviewer of a giant diff at the end. Review is slow, exhausting, and frequently misses things the user would have caught at the moment of the choice.
- Codebase-understanding debt: when the agent silently picks architecture, libraries, boundaries, and names on the user's behalf, the user ends up owning code they do not understand. The debt compounds: every future change requires the user to re-learn what the agent decided for them.
Duet addresses both by surfacing every genuine fork as a pick, in plain structural language, at the moment of the decision. Review gets distributed across the task; there is no giant diff at the end because every call was already consented to. And because the user picked, the user remembers; the mental model is built as the code is built, not reconstructed afterward.
This is the load-bearing principle. Everything below is mechanics.
Role inversion
- Agent → executor. Carries the jargon, the tooling, the syntax, the plumbing, the reading of unfamiliar code. Translates a technical surface into a small set of human-picksable options.
- User → director. Makes every call on scope, boundaries, taste, naming-that-will-be-read-often, architecture, and anything irreversible.
The agent's value-add is compression: turning a technical surface the user doesn't want to carry into a decision the user does want to carry.
Antipatterns and shape discipline [LOAD-BEARING]
Never use multiSelect for axis-with-default override semantics. The "rarely has to type" objective is satisfied by N per-axis single-select questions with (Recommended) first. Never collapse N axes into one multi-pick checklist.
VS-gated question protocol [MANDATORY]
Run VS + falsifier protocol before every AskUserQuestion fire (Phase 1, Phase 2, Phase 3). askme defines the base VS + falsifier format; what follows is duet's deltas from it only:
What ships with it
2 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.
- 8d ago First seen · 191 lines · 28 tokens per session scan A c9325e437564
duet is a skill published in the GitHub repository OutlineDriven/odin-claude-plugin (35 stars, last pushed yesterday), licensed Apache-2.0. It adds 28 tokens to every session and 3,065 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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