mermaid-renderer SKILL.md skillA
mermaid-renderer from ethanyoq/skill-hub is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ethanyoq/skill-hub/mermaid-renderer@git:20260912.c74de71Pins git:20260912.c74de71 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ethanyoq/skill-hub
- Path
archives/user-installed-skills/mermaid-renderer/d41320222bdbad43/mermaid-renderer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260912.c74de71, committed Sep 12, 2026
- Size
- 4,220 bytes
- Repository stars
- 11
- License
- MIT
Phase 4.5 hook by Phase-2-Quality-Fix sprint. 封装 mmdc/npx Mermaid CLI subprocess,把 LLM 输出的 `<div class="mermaid">...</div>` block 渲染为 PNG。Use AFTER cite-bound-content-generator (Phase 4 Turn 1) and BEFORE report-bundle-builder (Phase 5). Production smoke must fail closed if rendering fails.
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
# mermaid-renderer (Phase 4.5)
## 用途
Phase 4.5 hook,提取 LLM 输出的 `<div class="mermaid">...</div>` block,转成 PNG 文件,替换为 `<img src="assets/decision-tree-N.png">`。优先用 `mmdc`;若未全局安装但 `npx` 可用,临时调用 `@mermaid-js/mermaid-cli`。
## 接口
```python
render_mermaid_to_png(
mermaid_text: str,
output_path: Path,
timeout_sec: int = 30,
width: int = 5000,
scale: int = 2,
) -> dict
```
返回:
```python
{
"ok": bool, # True = PNG 渲染成功
"path": Path | None, # 成功时是 output 文件路径
"fallback_inline": str | None, # 失败时是原 mermaid 文本
"reason": str, # 状态说明 ("mmdc ok" / "mmdc not installed" / "mmdc exit N: ..." / "mmdc timeout")
"render_width": int, # 默认 5000
"render_scale": int, # 默认 2
}
```
## 三层 fallback
1. **mmdc/npx 不可用**→ ok=False + fallback_inline = mermaid_text
2. **subprocess 失败**(returncode 非零 / 输出文件不存在)→ ok=False + fallback_inline + 错误 message (含 stderr 前 500 char)
3. **subprocess 超时**(默认 30s)→ ok=False + fallback_inline + "mmdc timeout"
production smoke 必须把 ok=False 视为阻断；非生产 dry-run 可保留 inline `<div class="mermaid">...</div>` 便于调试。
## V25 render quality contract
…Read the whole file at its exact version.
How to install
mdr add ethanyoq/skill-hub/mermaid-renderer@sha256:031ff5e6137fb39eThe line at the top of this page pins the label git:20260912.c74de71, 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_tupaowqriqdctmud)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 12, 2026.
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 (4220 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
ethanyoq/skill-hub · 11 stars · license MIT · pushed 2026-11-07 · branch mine
API
GET https://markdownregistry.com/api/v1/artifacts/art_tupaowqriqdctmud GET https://markdownregistry.com/api/v1/resolve?ref=ethanyoq/skill-hub/mermaid-renderer GET https://markdownregistry.com/api/v1/blob/031ff5e6137fb39ebebdc33e42998ea333d36058b441812136a3ec831cee0b3a
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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