I want to build a CLI tool (using SwiftPM - without XCode) to read the contacts on my mac. The end goal is to use the notes field or maybe custom fields to build a simple CRM (customer relationship tool) to keep track of some things. It especially means reading the NOTE field, and also writing it back. But... as mentioned on com.apple.developer.contacts.notes | Apple Developer Documentation reading the note field requires the com.apple.developer.contacts.notes. How do I do that? If it runs locally only on my machine I am happy. I wrote an entitlements.plist: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>com.apple.developer.contacts.notes</key> <true/> </dict> </plist> And do # build swift build --configuration release --disable-sandbox --arch arm64 Building for production... [2/2] Linking contacts Build complete! (0.29s) #sign codesign --sign - --entitlements entitlements.plist --deep .build/release/contacts --force .build/release/contacts: replacing existing signature But upon running, I get: ./.build/release/contacts fish: Job 1, './.build/release/contacts' terminated by signal SIGKILL (Forced quit) Without signing I get: *** Terminating app due to uncaught exception 'CNPropertyNotFetchedException', reason: 'A property was not requested when contact was fetched.' *** First throw call stack: ( 0 CoreFoundation 0x000000018b1cc570 __exceptionPreprocess + 176 1 libobjc.A.dylib 0x000000018acbdeb4 objc_exception_throw + 60 2 CoreFoundation 0x000000018b1cc460 +[NSException exceptionWithName:reason:userInfo:] + 0 3 Contacts 0x000000019f8f9b74 -[CNContact note] + 152 4 contacts 0x0000000104879e04 $s8contacts3CliV3runyyKF + 436 5 contacts 0x000000010487a0c8 $s8contacts3CliV14ArgumentParser15ParsableCommandAadEP3runyyKFTW + 12 6 contacts 0x000000010487a160 contacts_main + 96 7 dyld 0x000000018acf90e0 start + 2360 ) libc++abi: terminating due to uncaught exception of type NSException fish: Job 1, './.build/release/contacts' terminated by signal SIGABRT (Abort) I am new to Swift and SwiftPM and the world of code signing. I currently am NOT a member of the Apple Developer program but if needed I am (reluctantly) willing to pay 99$ to be able to sign/notarize/.. but since the goal is to only run it for myself I hppe there is a way to self-sign. Do I need so sign my cli? Is it even possible to codesign command line tools (i've seen comments that it is not)? How would I do that? What am I missing? Cheers, Oliver