mjunaidca/mjs-agent-skills · .claude/skills/building-chatgpt-apps/SKILL.md

building-chatgpt-apps skillF

building-chatgpt-apps is agent-read markdown (skill) from mjunaidca/mjs-agent-skills: Guides creation of ChatGPT Apps with interactive widgets using OpenAI Apps SDK and MCP servers. Use when building ChatGPT custom apps with visual UI components, embedded widgets, or rich interactive experiences. Covers widget architecture, MCP server setup with FastMCP, response metadata, and Developer Mode configuration. NOT when building standard MCP servers without widgets (use building-mcp-servers skill instead)..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add mjunaidca/mjs-agent-skills/building-chatgpt-apps@git:20251222.ace8bd5
Exact content
mdr add mjunaidca/mjs-agent-skills/building-chatgpt-apps@sha256:b8aff5d8b7f84116

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_kye2glkva3smqx5p.svg)](https://markdownregistry.com/a/art_kye2glkva3smqx5p)

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Versions

versioncommittedcommitsizeaudit
git:20251222.ace8bd5 latest2025-12-22 ace8bd5 13,522 BF view

Audit of the latest version

F  15 of 17 checks passed. Deterministic, no model, same answer every run.
  • FAIL, critical: No link to an exfiltration or paste host (matched: https://your-tunnel.ngrok-free.app)
  • fail: No script tag (matched: <script)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (13522 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • 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

Source

GitHub

mjunaidca/mjs-agent-skills · 28 stars · license none · pushed 2026-08-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_kye2glkva3smqx5p
GET https://markdownregistry.com/api/v1/resolve?ref=mjunaidca/mjs-agent-skills/building-chatgpt-apps
GET https://markdownregistry.com/api/v1/blob/b8aff5d8b7f84116b765cc384a9585e171455d6e41861d8d24af11776695e0c2

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.