Borrowing it
Nothing to install: this file belongs to DingyangLyu/MatClaw. 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/DingyangLyu/MatClaw/main/.claude/skills/convert-to-apple-container/SKILL.mdgit clone --depth 1 https://github.com/DingyangLyu/MatClawWrote 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/dingyanglyu/matclaw/convert-to-apple-container)<a href="https://agentmods.dev/skills/dingyanglyu/matclaw/convert-to-apple-container"><img src="https://agentmods.dev/badge/skills/dingyanglyu/matclaw/convert-to-apple-container/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/dingyanglyu/matclaw/convert-to-apple-container"><img src="https://agentmods.dev/badge/skills/dingyanglyu/matclaw/convert-to-apple-container.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 | $0.00068 | $0.01404 |
| Opus 5 | $0.00034 | $0.00702 |
| Sonnet 5 | $0.00014 | $0.00281 |
| Haiku 4.5 | $0.00007 | $0.00140 |
Grade C, and why
convert-to-apple-container scanned grade C 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 9d 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.
rm -rf /tmp/test-ro How it starts
The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Convert to Apple Container
This skill switches MatClaw's container runtime from Docker to Apple Container (macOS-only). It uses the skills engine for deterministic code changes, then walks through verification.
What this changes:
- Container runtime binary:
docker→container - Mount syntax:
-v path:path:ro→--mount type=bind,source=...,target=...,readonly - Startup check:
docker info→container system status(with auto-start) - Orphan detection:
docker ps --filter→container ls --format json - Build script default:
docker→container - Dockerfile entrypoint:
.envshadowing viamount --bindinside the container (Apple Container only supports directory mounts, not file mounts like Docker's/dev/nulloverlay) - Container runner: main-group containers start as root for
mount --bind, then drop privileges viasetpriv
What stays the same:
- Mount security/allowlist validation
- All exported interfaces and IPC protocol
- Non-main container behavior (still uses
--userflag) - All other functionality
Prerequisites
Verify Apple Container is installed:
container --version && echo "Apple Container ready" || echo "Install Apple Container first"
If not installed:
- Download from https://github.com/apple/container/releases
- Install the
.pkgfile - Verify:
container --version
Apple Container requires macOS. It does not work on Linux.
Phase 1: Pre-flight
Check if already applied
Read .matclaw/state.yaml. If convert-to-apple-container is in applied_skills, skip to Phase 3 (Verify). The code changes are already in place.
Check current runtime
grep "CONTAINER_RUNTIME_BIN" src/container-runtime.ts
If it already shows 'container', the runtime is already Apple Container. Skip to Phase 3.
Phase 2: Apply Code Changes
Run the skills engine to apply this skill's code package. The package files are in this directory alongside this SKILL.md.
Initialize skills system (if needed)
What ships with it
11 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.
- manifest.yaml 400 B
- modify/container/build.sh 637 B runs code
- modify/container/build.sh.intent.md 557 B
- modify/container/Dockerfile 2.7 KB
- modify/container/Dockerfile.intent.md 1.8 KB
- modify/src/container-runner.ts 21 KB runs code
- modify/src/container-runner.ts.intent.md 1.8 KB
- modify/src/container-runtime.test.ts 5.1 KB runs code
- modify/src/container-runtime.ts 3.3 KB runs code
- modify/src/container-runtime.ts.intent.md 1.4 KB
- tests/convert-to-apple-container.test.ts 2.7 KB runs code
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.
- 9d ago First seen · 184 lines · 68 tokens per session scan C 9d49c7e43eab
convert-to-apple-container is a skill published in the GitHub repository DingyangLyu/MatClaw (90 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 68 tokens to every session and 1,404 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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