What are Widget tools?

Widget tools are specialized MCP tools designed to return UI content, and this skill helps configure the 'openai/outputTemplate' metadata required to render them.

Can I use this to build tools that call external APIs?

Yes, the skill includes a specific 'External' classification (openWorldHint) designed for tools that interface with third-party web services and APIs.

Does it automatically update my project files?

Yes, it assists in updating 'server/index.ts' with proper metadata and adding the tool configuration to the '.chatgpt-app/state.json' file.

What is an MCP tool in the context of this skill?

An MCP (Model Context Protocol) tool is a specialized capability added to a ChatGPT application that allows the AI to fetch data, perform actions, or render custom UI components.

How does this skill assist with schema creation?

It automatically generates Zod schemas for tool inputs, including appropriate types, optional field markers, and clear descriptions for API clarity.

ChatGPT App MCP Tool Builder

Name: ChatGPT App MCP Tool Builder
Author: hollaugo

byhollaugo

•

API 开发

Streamlines the creation, schema design, and registration of Model Context Protocol (MCP) tools for ChatGPT applications.

This skill provides a structured workflow for developers looking to expand the capabilities of their ChatGPT applications through the Model Context Protocol. It guides users through the entire lifecycle of tool creation, from initial requirement gathering and tool classification to the generation of type-safe Zod schemas and server-side handlers. By automating metadata registration in the application's entry point and state management files, this skill ensures that new tools are correctly configured with appropriate read-only, destructive, or external hints, significantly reducing the manual overhead and potential for errors in custom tool development.

主要功能

01Automated tool handler code generation in server directories

02Automated Zod schema and TypeScript type generation

031 GitHub stars

04Automated registration in server/index.ts and state configuration

05Smart tool classification (Query, Mutation, Destructive, Widget, External)

06Interactive tool design and requirement gathering workflow

使用场景

01Implementing safe database mutation tools with destructive action hints

02Building custom data retrieval tools for internal company APIs

03Creating interactive UI widgets within the ChatGPT interface

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hollaugo/prompt-circle-marketplace add-tool

For use in Claude.ai and ChatGPT

Download Skill