Steve Troughton-SmithFeb 18
Xcode's MCP is just impossible to use, since every command you run in the Codex app pops up a 'do you want to allow this connection' dialog in Xcode, and pauses the debugged app. I know Apple can't actually use the consumer version of any of this stuff internally, because of the security risks, and you can really feel that by how it behaves
Show threaderin sparlingFeb 18

@stroughtonsmith Edit: "failing to" repay you for all of the years of defaults: https://gist.github.com/everyplace/0a1e2637261325ea1d47447f4085bf37#file-disable-xcode-s-permissions-checks-md

defaults write com.apple.dt.Xcode IDEChatAgenticChatSkipPermissions -bool YES

Edited: Gist updated to indicate this is from Xcode to external MCP servers, and not the other way around.

Configure Xcode 26.3 with agent support to use the iOS-simulator mcp server

Configure Xcode 26.3 with agent support to use the iOS-simulator mcp server - Disable Xcode's permissions checks.md

Gist
Show threadSteve Troughton-SmithFeb 18
@everyplace that doesn't stop this prompt, which is my problem 🫤
Show threadFinn VoorheesFeb 19
@stroughtonsmith @everyplace there's a default to silence these prompts - IDEChatInternalAllowUntrustedAgentsWithoutUserInteraction - but it's gated behind isInternalOS, only for apple engineers 🙃
Show threaderin sparling
@finnvoorhees @stroughtonsmith yeah I have that one document and 😢 https://gist.github.com/everyplace/0a1e2637261325ea1d47447f4085bf37#all-known-idechat-defaults
Configure Xcode 26.3 with agent support to use the iOS-simulator mcp server

Configure Xcode 26.3 with agent support to use the iOS-simulator mcp server - Disable Xcode's permissions checks.md

Gist
Feb 19 at 11:21pmIvory for iOS