#chatgpt-apps

2 posts

Chae-won · Apr 30, 2026

Build APIs Right Inside ChatGPT — 3Min API Has Joined ChatGPT Apps

3Min API has joined ChatGPT Apps. Without writing code or renting a server, you can now build, test, and invite collaborators to your APIs from inside your ChatGPT conversations. We walk through what changes — with a small wine business scenario.

featurechatgpt-appsai

Building a ChatGPT App with the Apps SDK: MCP, OAuth, and Notes from Submission

yeonghyeon · Apr 29, 2026

Building a ChatGPT App with the Apps SDK: MCP, OAuth, and Notes from Submission

How we built and submitted 3Min API as a ChatGPT App. We picked the standard MCP SDK only (no OpenAI-specific wrapper), implemented OAuth 2.1 (RFC 7591/8414/9728) plus an API Key path for CLI tools, and learned to mark destructiveHint/openWorldHint conservatively after one rejection. The same code covers Claude Connectors as well.

guidemcpaichatgpt-apps