One of the more curious details to emerge from the publication of Claude Code’s source is that Anthropic tries to hide AI authorship from contributions to public code repositories – possibly a response to the open source projects that have disallowed AI code contributions. Prompt instructions in a file called undercover.ts state, “You are operating UNDERCOVER in a PUBLIC/OPEN-SOURCE repository. Your commit messages, PR titles, and PR bodies MUST NOT contain ANY Anthropic-internal information. Do not blow your cover.”

People don’t like AI contributions so they hide it, cool