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/homenshum/nodebenchai/sandbox-doctornpx skills add HomenShum/NodeBenchAI --skill sandbox-doctorgit clone --depth 1 https://github.com/HomenShum/NodeBenchAIWrote 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/homenshum/nodebenchai/sandbox-doctor)<a href="https://agentmods.dev/skills/homenshum/nodebenchai/sandbox-doctor"><img src="https://agentmods.dev/badge/skills/homenshum/nodebenchai/sandbox-doctor.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 | $0.00043 | $0.00358 |
| Opus 5 | $0.00022 | $0.00179 |
| Sonnet 5 | $0.00009 | $0.00072 |
| Haiku 4.5 | $0.00004 | $0.00036 |
Grade A, and why
sandbox-doctor 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 2d 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
Sandbox Doctor
Run diagnostics on the NodeBench context sandbox.
Instructions
- Call the NodeBench MCP tool
sandbox_statsto check if the sandbox is initialized. - Run this diagnostic shell command via Bash:
node -e "const Database = require('better-sqlite3'); const db = new Database(require('os').homedir() + '/.nodebench/nodebench.db'); const tables = db.prepare(\"SELECT name FROM sqlite_master WHERE type='table' AND name LIKE 'sandbox%'\").all(); const fts = db.prepare(\"SELECT name FROM sqlite_master WHERE type='table' AND name='sandbox_fts'\").all(); console.log(JSON.stringify({ tables: tables.map(t=>t.name), fts5: fts.length > 0, chunks: db.prepare('SELECT COUNT(*) as c FROM sandbox_chunks').get() }, null, 2));" - Display results as a checklist:
Use## NodeBench Sandbox Doctor - [x] SQLite: OK (~/.nodebench/nodebench.db) - [x] FTS5: Available (sandbox_fts table exists) - [x] Chunks indexed: N - [x] Sources: N - [x] Plugin: registered - [x] Hooks: PreToolUse + SessionStart configured[x]for PASS,[ ]for FAIL.
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.
- 2d ago First seen · 32 lines · 43 tokens per session scan A ec70e3943095
sandbox-doctor is a skill published in the GitHub repository HomenShum/NodeBenchAI (14 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 358 once invoked, about $0.0002 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 2026-09-03.
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