comfyui-frontend-extensions SKILL.md skillA
comfyui-frontend-extensions from artokun/comfyui-mcp is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add artokun/comfyui-mcp/comfyui-frontend-extensions@git:20260825.cab59a6Pins git:20260825.cab59a6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- artokun/comfyui-mcp
- Path
plugin/skills/comfyui-frontend-extensions/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260825.cab59a6, committed Aug 25, 2026
- First version recorded
- May 25, 2026
- Size
- 21,453 bytes
- Repository stars
- 887
- License
- MIT
Authoring ComfyUI v2 frontend extensions with @comfyorg/extension-api, covering defineNode/defineExtension/defineWidget, shell UI (sidebar tabs, commands, hotkeys), typed events, and handles. Use when writing or editing ComfyUI web-UI extension code (custom node JS, sidebar panels, widgets).
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
# ComfyUI v2 Frontend Extension API
The v2 extension API is the published npm package `@comfyorg/extension-api`. It
replaces the legacy `app.registerExtension()` / `nodeType.prototype` monkey-patching
model with a typed, tree-shakeable, import-based API.
> If you are converting an existing v1 extension, read
> [`references/migrate-v1-to-v2.md`](references/migrate-v1-to-v2.md) for a
> pattern-by-pattern mapping.
## Mental model
| v1 (legacy) | v2 (`@comfyorg/extension-api`) |
|-------------|-------------------------------|
| One giant `app.registerExtension({...})` call | One `defineX` per concern, each independently disposable |
| `window.app` / `app.*` globals | Direct `import` from the package; no `window.app` at module-eval time |
| `nodeType.prototype.onExecuted = ...` patching | `node.on('executed', fn)` on a `NodeHandle` |
| Mutate `widget.value`, assign `widget.callback` | `widget.setValue(v)` / `widget.on('valueChange', fn)` |
| `api.addEventListener('execution_start', fn)` | `execution.on('start', fn)` (typed namespaces) |
| Manual `removeEventListener` bookkeeping | Every subscription returns `Unsubscribe`; every `defineX` returns `DisposableHandle` |
…Read the whole file at its exact version.
How to install
mdr add artokun/comfyui-mcp/comfyui-frontend-extensions@sha256:547062066d044956The line at the top of this page pins the label git:20260825.cab59a6, 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_zg6axdac725o7q2k)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between May 25, 2026 and Aug 25, 2026, about one every 46 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260825.cab59a6 latest | 2026-08-25 | cab59a6 | 21,453 B | A | view · diff |
| git:20260819.9fe9ea3 | 2026-08-19 | 9fe9ea3 | 21,551 B | A | view · diff |
| git:20260525.7f2a0b0 | 2026-05-25 | 7f2a0b0 | 21,448 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 (21453 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
artokun/comfyui-mcp · 887 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zg6axdac725o7q2k GET https://markdownregistry.com/api/v1/resolve?ref=artokun/comfyui-mcp/comfyui-frontend-extensions GET https://markdownregistry.com/api/v1/blob/547062066d0449563cb09b683055262ecf8ce0c9d4a2509d12b6ba42ac6fbfca
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.