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/gtapps/claude-code-hermit/domain-brainstormnpx skills add gtapps/claude-code-hermit --skill domain-brainstormgit clone --depth 1 https://github.com/gtapps/claude-code-hermitWrote 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/gtapps/claude-code-hermit/domain-brainstorm)<a href="https://agentmods.dev/skills/gtapps/claude-code-hermit/domain-brainstorm"><img src="https://agentmods.dev/badge/skills/gtapps/claude-code-hermit/domain-brainstorm.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 | $0.00080 | $0.01327 |
| Opus 5 | $0.00040 | $0.00664 |
| Sonnet 5 | $0.00016 | $0.00265 |
| Haiku 4.5 | $0.00008 | $0.00133 |
Grade A, and why
domain-brainstorm 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.
How it starts
The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Domain Brainstorm
Kill criteria (read before running)
After ≥8 invocations, check the capability-brainstorm segment of core's proposal metrics report — run .claude-code-hermit/bin/hermit-run proposal metrics .claude-code-hermit --source=capability-brainstorm (the project-resident bin/hermit-run resolves core's plugin root, which a path relative to this plugin can't reach), or read the capability-brainstorm row of the table /claude-code-hermit:hermit-evolution prints. If triage-survival < 25% or PROP-acceptance < 30%, treat it as a class-level signal that brainstorm output is noisy and raise it with the operator — the segment is shared with core's capability-brainstorm and the other domain brainstorm skills, so it cannot by itself say which skill to cut.
Gate 0 — Gather inputs
Read these in parallel — all are cheap working-tree reads. Do not run the test suite or install tools.
Git activity
git log --oneline -50
git log --format= --name-only -50 | sort | uniq -c | sort -rn | head -20
Note the 5 most-churned files and any subsystem clusters.
Test signal
Read .claude-code-hermit/state/last-test.json (written by /dev-test). Extract status, exit_code, and duration_ms. If absent or last-modified >24h ago, note "no recent test run" — do not run the suite.
Manifest drift
ls for package.json, Cargo.toml, pyproject.toml, go.mod. For each found, check its lockfile (package-lock.json/yarn.lock/pnpm-lock.yaml, Cargo.lock, poetry.lock, go.sum) exists alongside it. Flag any mismatch.
README coverage
Read README.md and a one-level ls of the repo root. Note features or modules claimed in the README with no corresponding directory or file visible.
Gate 1 — Generate ideas (max 2)
Think across all four inputs. For each candidate, both constraints must pass before including it:
- Concrete friction — state the operator pain in one sentence. What breaks, slows, or misleads today without this fix? If no specific pain, discard.
- ≥2 named grounding items — cite at least two by name (e.g.
git:cli/index.js,state:last-test.json duration=38s,file:package-lock.json missing,readme:§Feature X). These support the friction; friction is the bar.
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 · 106 lines · 80 tokens per session scan A dbb2ac6a3033
domain-brainstorm is a skill published in the GitHub repository gtapps/claude-code-hermit (74 stars, last pushed today), licensed MIT. It adds 80 tokens to every session and 1,327 once invoked, about $0.0004 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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