mcp-app-scaffolding SKILL.md skillA
mcp-app-scaffolding from a5c-ai/babysitter is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add a5c-ai/babysitter/mcp-app-scaffolding@git:20260601.da7723aPins git:20260601.da7723a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- a5c-ai/babysitter
- Path
library/specializations/ai-agents-conversational/skills/mcp-app-scaffolding/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260601.da7723a, committed Jun 1, 2026
- First version recorded
- Apr 4, 2026
- Size
- 8,951 bytes
- Repository stars
- 1,896
- License
- MIT
Scaffolds MCP App project structure with correct directory layout, dependencies, entry points, and framework-specific templates. Handles React (useApp hook), Vanilla JS, Vue, Svelte, Preact, and Solid.
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
# mcp-app-scaffolding
Scaffold MCP App projects from scratch with correct structure, dependencies, and framework-specific templates following the reference-code-first methodology.
## Overview
MCP Apps are interactive UIs that render inline in MCP-enabled hosts (Claude Desktop, ChatGPT, VS Code, Goose, Postman). Every MCP App requires:
- A **Tool** (called by the LLM/host, returns data) registered via `registerAppTool`
- A **Resource** (serves bundled HTML UI) registered via `registerAppResource`
- The tool's `_meta.ui.resourceUri` references the resource's URI
This skill handles the initial project scaffolding: cloning the SDK reference code, selecting a framework, generating the directory structure, and creating all entry points.
## Capabilities
### Reference Code Acquisition
- Clone SDK repository at exact published npm version
- Access framework templates from `examples/basic-server-{framework}/`
- Access API reference source from `src/`
- Access advanced patterns from `docs/patterns.md`
- Access basic-host reference for testing from `examples/basic-host/`
### Framework Selection Decision Tree
…Read the whole file at its exact version.
How to install
mdr add a5c-ai/babysitter/mcp-app-scaffolding@sha256:8f9d733b5877ead0The line at the top of this page pins the label git:20260601.da7723a, 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_j7iekl5yfx7act7m)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 4, 2026 and Jun 1, 2026, about one every 14 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260601.da7723a latest | 2026-06-01 | da7723a | 8,951 B | A | view · diff |
| git:20260507.44b06c0 | 2026-05-07 | 44b06c0 | 9,204 B | A | view · diff |
| git:20260507.50823d8 | 2026-05-07 | 50823d8 | 9,178 B | A | view · diff |
| git:20260507.313363d | 2026-05-07 | 313363d | 8,903 B | A | view · diff |
| git:20260404.bc2ce97 | 2026-04-04 | bc2ce97 | 8,606 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 (8951 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
a5c-ai/babysitter · 1,896 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_j7iekl5yfx7act7m GET https://markdownregistry.com/api/v1/resolve?ref=a5c-ai/babysitter/mcp-app-scaffolding GET https://markdownregistry.com/api/v1/blob/8f9d733b5877ead0b1663ce579799a3babb3de5d810a91e7c3d5c3e6deb92cb3
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.