---
name: chatgpt-app-builder
description: |
  Guide developers through creating ChatGPT apps.
  Covers the full lifecycle: brainstorming ideas against UX guidelines, bootstrapping projects, implementing tools/widgets, debugging, running dev servers, deploying and connecting apps to ChatGPT.
  Use when a user wants to build a ChatGPT app, create an MCP server for ChatGPT.
---

# Creating ChatGPT Apps

ChatGPT apps are conversational experiences that extend ChatGPT through tools and custom UI widgets. They're built as MCP servers that ChatGPT invokes during conversations.

## Workflow

1. **Brainstorm**: validate the idea and create SPEC.md. See [references/brainstorm.md](references/brainstorm.md).
2. **Architecture**: specify tools and widgets, update SPEC.md. See [references/architecture.md](references/architecture.md).
3. **Bootstrap**: scaffold the project. See [references/bootstrap.md](references/bootstrap.md).
4. **Running locally**: start the dev server and guide user into connecting their local app to ChatGPT. See [references/run-locally.md](references/run-locally.md).