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Dev tools · October 28, 2025

OA

OpenAI Apps Handbook

I went swimming in the ocean of OpenAI's Apps SDK… and came back with a handbook! Over the past few weeks, I’ve been diving deep into the ChatGPT App SDK: exploring its APIs, tools, and hidden gems. Along the way, I built, broke, fixed, and reimagined a bunch of little experiments. P.S: Indeed OAIs official docs is the source of truth, this is just a rough notebook Maybe, I can create a CLI tool to scaffold app?

In plain words

OpenAI Apps Handbook is a developer resource that documents exploration of the ChatGPT App SDK, including its APIs, tools, and practical examples. Created by a developer who experimented extensively with the SDK, it serves as an informal guide for developers building with OpenAI's tools. The handbook combines API documentation with real-world experiments and examples, complementing official OpenAI documentation with practical insights and code samples.

written from the facts on this page · September 2026

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