Installed from the Mac App Store Signed in with my Apple ID in Xcode Apple Intelligence is enabled Chat providers work normally (ChatGPT, Claude, Google) What I expected According to Apple's documentation, the Intelligence settings should display built-in Agents such as: Claude Agent Codex with a Get button to install them. Reference: https://developer.apple.com/documentation/xcode/setting-up-coding-intelligence What actually happens After upgrading to Xcode 26.6, the Agents section only contains: Allow external agents to use Xcode tools Add an Agent... The built-in Agents (Claude Agent and Codex) are completely missing.
Xcode 26.6 no longer shows the built-in Agents (Codex / Claude Agent) in Intelligence settings
You need to download the new agents in Settings -> Components.
Another issue others have seen is that the OS Setting "Apple Intelligence" must be turned on. Other requirements are a Silicon Mac and latest MacOS 26. For some regions "Apple Intelligence" is not available.
"Apple Intelligence must be turned on before launching Xcode to use coding intelligence features. (152533281)"
https://developer.apple.com/forums/thread/844711?answerId=906189022#906189022 lists a workaround