Apps SDK
Learn to build plugins for ChatGPT and Codex with skills, MCP servers, and optional UI. Explore developer guides for authentication, testing, and publishing.
Docs and resources to help you build with, for, and on OpenAI.
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Learn to build plugins for ChatGPT and Codex with skills, MCP servers, and optional UI. Explore developer guides for authentication, testing, and publishing.
Use the Decisions API to check conditions, select from fixed options, and score text, images, and JSON against a rubric.
Build durable cloud agents with a managed Codex harness.
Pricing information for the OpenAI platform.
Give ChatGPT and Codex new capabilities and expertise
See all of the latest features and updates to the OpenAI API.