Meta's Muse agent is quietly building profile pages for every person in its users' lives, pulling hourly from connected banks, messages, and health data. That is the finding of a Wired investigation covered by TechBizWeb: the assistant keeps relationship dossiers covering shared history, relationship status, and "relationship-strengthening suggestions."

The discovery came from the model's own instruction files. AI safety researcher Karan Joshi extracted Muse's system prompts simply by asking the assistant to copy and share its own files in the chat interface, then publishing what he found with Wired. The documents show how Muse organizes personal information, what it prioritizes, and how it interprets the emotional, messy world of its users' relationships. Meta's response: the files were meant to be accessible as part of a broader transparency commitment.

The story lands right as Apple is tightening macOS Full Disk Access specifically in response to Muse's behavior on iPhone and Mac, and days after Meta disputed a user's claim that Muse read private messages without permission. A pattern is forming around how aggressively the agent ingests the personal context it needs to do its job.