ref-cross-platform-runtime SKILL.md skillA
ref-cross-platform-runtime from daishiman/harness-dev is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add daishiman/harness-dev/ref-cross-platform-runtime@v0.1.0Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- daishiman/harness-dev
- Path
plugins/harness-creator/skills/ref-cross-platform-runtime/SKILL.md- Versions recorded
- 2
- Latest version
- v0.1.0, committed Oct 12, 2026
- First version recorded
- Jul 12, 2026
- Size
- 4,079 bytes
- Repository stars
- 10
- License
- none declared
他Skillが host OS で分岐するとき、OS判定に失敗したときに読む。.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# ref-cross-platform-runtime
## Purpose & Output Contract
Python 標準ライブラリを実行基盤の正本とし、Mac / Linux / Windows / unknown を横串で扱うための共通契約を提供する。
本 ref を import した skill は次の dict を呼び出し元へ返せる:
```json
{
"os": "mac|linux|windows|unknown",
"python_cmd": "python3|python|unknown",
"python_available": true,
"fallback_used": false
}
```
## Boundary
- **責務**: OS 判定動線・フォールバック文面・no-deps 原則の宣言
- **非責務**: 個別 secret 取得（→ `scripts/cross_platform_secret.py` に委譲）
## Key Rules
1. 実行は Python 標準ライブラリを既定にする。生成・検証・adapter・hook（設計書 28 章 §3.2 の L2）は `.py` を正本とし、`.js` / `.sh` で新規に作らない。
2. Node.js / npm / npx / yarn / pnpm を必須化しない。既存の Node 前提が見つかった場合は Python stdlib に置換する。
3. Bash は Claude/Codex 側の tool 名として Python (`python_cmd`) を起動する場合と、本文の OS 判定の注入 (Rule 4) に限って使う。L2 の処理を shell script にして配布しない（lifecycle の `.sh` は Gotchas）。
4. OS 判定は、Skill 本文では `uname -s` の注入（設計書 22 章）、script の中では Python の `platform` / `shutil.which` で行う。判定不能または Python 不在なら自走せずユーザーへ問い合わせる。
5. ユーザー宣言値は **会話スコープのみ** に保持。長期記憶へ焼き込まない。
6. 追加導入を要求する CLI を呼ばない（jq, yq, rg, node, npm, requests, PyYAML 禁止）。
## Steps
参照用。手順なし。本文を import する skill 側が以下を組み込むこと。
### Runtime 判定 (script に貼る雛形)
```python
import platform
import shutil
…Read the whole file at its exact version.
How to install
mdr add daishiman/harness-dev/ref-cross-platform-runtime@sha256:4616ffba37e6d63bThe line at the top of this page pins the label v0.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_f3zzeoodzr43aqax)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 12, 2026 and Oct 12, 2026, about one every 92 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.1.0 latest | 2026-10-12 | 5ae3511 | 4,079 B | A | view · diff |
| v0.1.0 | 2026-07-12 | 4cd8faf | 3,547 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4079 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
daishiman/harness-dev · 10 stars · license none declared · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_f3zzeoodzr43aqax GET https://markdownregistry.com/api/v1/resolve?ref=daishiman/harness-dev/ref-cross-platform-runtime GET https://markdownregistry.com/api/v1/blob/4616ffba37e6d63ba736315721f385474641dfdbaab49f5a2f31987ca32d06fd
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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