Borrowing it
Nothing to install: this file belongs to ninemindai/agentgem. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ninemindai/agentgem/main/.claude/skills/verify/SKILL.mdgit clone --depth 1 https://github.com/ninemindai/agentgemWrote 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/ninemindai/agentgem/verify)<a href="https://agentmods.dev/skills/ninemindai/agentgem/verify"><img src="https://agentmods.dev/badge/skills/ninemindai/agentgem/verify/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ninemindai/agentgem/verify"><img src="https://agentmods.dev/badge/skills/ninemindai/agentgem/verify.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00025 | $0.00648 |
| Opus 5.5 | $0.00010 | $0.00259 |
| Sonnet 5.5 | $0.00005 | $0.00130 |
| Haiku 4.5 | $0.00003 | $0.00065 |
Grade C, and why
verify scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
- **After pulling a refactor, clean `dist/` first** — `rm -rf dist tsconfig.tsbuildinfo Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- SSE surfaces are also curl-able directly, e.g. How it starts
The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Verifying agentgem changes at the running surface
Build + launch
pnpm build # tsc -b AND the console SPA bundle — both required
AGENTGEM_HOME=$(mktemp -d) PORT=<unused-port> node dist/client.js
- Entry is
dist/client.js(the local-mode server) — NOTdist/index.js, which no longer exists after the server-library extraction into@agentgem/app. The banner isagentgem (client mode) listening at …. - After pulling a refactor, clean
dist/first —rm -rf dist tsconfig.tsbuildinfo packages/*/tsconfig.tsbuildinfo && pnpm build. Stale incremental output can leave a deaddist/index.jsimporting a since-removed package (e.g.@agentgem/deploy), which crashes on boot. - Always restart the server after a rebuild — it caches the console SPA HTML at boot, and
built-in miniapp constants (e.g.
EMBER_HTML) are module-level imports. - Pick a genuinely unused port and confirm ownership: with concurrent agent sessions in
sibling worktrees, another session's server may already hold your port and your
nodeexits after printing its banner. Checklsof -p $(lsof -tnP -iTCP:<port> -sTCP:LISTEN) | grep cwdpoints at YOUR worktree. AGENTGEM_HOMEisolates agentgem's own data; watched transcripts still come from the real~/.claude, so Watch/hygiene/Ember surfaces show real sessions.
Drive
- Console pages are hash routes:
http://localhost:<port>/#/arcade,#/watch,#/play, … - Browser consent for Play capabilities is per-origin
localStorage(agentgem:play:consent:<gem>:<cap>) — a reused port silently skips consent modals; clear those keys to test the consent path. - Sealed miniapp iframes are null-origin: you cannot reach inside from the top document. To
observe the broker wire, wrap
window.EventSourcein the top window (streams live there), or listen formessageevents (game→host half is visible onwindow). - SSE surfaces are also curl-able directly, e.g.
curl -N "http://localhost:<port>/api/watch/hygiene?file=<transcript>".
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.
- 2mo ago First seen · 48 lines · 25 tokens per session scan C e292d8ebc37c
verify is a skill published in the GitHub repository ninemindai/agentgem (41 stars, last pushed 27d ago), licensed MIT. It adds 25 tokens to every session and 648 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
verify compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| verifyninemindai/agentgem | Skill | 41 | 27d ago | MIT | C | 25 | Claude Code |
| webapp-testingHmbown/CodeWhale | Skill | 41k | 5d ago | MIT | A | 32 | Claude Code, Codex |
| test-browsergvkhosla/compound-engineering-pi | Skill | 52 | 1mo ago | MIT | A | 14 | Claude Code |
| webview-uatwsauret/flywheel | Skill | 19 | yesterday | Apache-2.0 | A | 20 | Claude Code, Codex |
| uatwsauret/flywheel | Skill | 19 | yesterday | Apache-2.0 | A | 16 | Claude Code, Codex |
| vscode-uatwsauret/flywheel | Skill | 19 | yesterday | Apache-2.0 | A | 16 | Claude Code, Codex |
| playwright-e2e5dive-ai/skills | Skill | 1 | 4d ago | MIT | A | 54 | Claude Code, Codex |