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/joelhooks/joelclaw/docker-sandboxnpx skills add joelhooks/joelclaw --skill docker-sandboxgit clone --depth 1 https://github.com/joelhooks/joelclawWrote 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/joelhooks/joelclaw/docker-sandbox)<a href="https://agentmods.dev/skills/joelhooks/joelclaw/docker-sandbox"><img src="https://agentmods.dev/badge/skills/joelhooks/joelclaw/docker-sandbox.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 | $0.00074 | $0.01872 |
| Opus 5 | $0.00037 | $0.00936 |
| Sonnet 5 | $0.00015 | $0.00374 |
| Haiku 4.5 | $0.00007 | $0.00187 |
Grade B, and why
docker-sandbox scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
secrets add codex_auth_json --value "$(cat ~/.codex/auth.json)" 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
3 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.
- 5d ago First seen · 240 lines · 74 tokens per session scan B 3305a2ba3cb2
docker-sandbox is a skill published in the GitHub repository joelhooks/joelclaw (63 stars, last pushed today), with no licence file. It adds 74 tokens to every session and 1,872 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
agentbox-info
Spin up isolated sandboxes ("boxes") for coding agents, run them in parallel, queue background runs with -i, and push commits safely through the host relay. Use when the user wants to run Claude Code / Codex / OpenCode in a sandbox, start more boxes, attach to a running box, or otherwise operate the agentbox CLI on…
devops-deployment
Use when setting up CI/CD pipelines, containerizing applications, deploying to Kubernetes, or writing infrastructure as code. DevOps & Deployment covers GitHub Actions, Docker, Helm, and Terraform patterns.
dormice
Operate Dormice self-hosted agent sandboxes — acquire a sandbox, run commands, move files, tune lifecycle policy — through the official E2B SDKs, the native HTTP API and SDK, or the dor CLI. Use when connecting to a Dormice server, running untrusted or AI-generated code in a sandbox, giving an agent a persistent…
agentbox
Fork the current agent session into a new VM or local Docker container with all the project files, agent settings and session teleported into.
cis-aws-compute-3.3
Ensure Amazon ECS task definitions do not have 'pidMode' set to 'host'.
cis-aws-compute-3.4
Ensure Amazon ECS task definitions do not have 'privileged' set to 'true'.