How Meta's Muse works, revealed by the 6.8 GB filesystem it sent me

Meta's Muse, an internal AI assistant, operates within a 6.8 GB filesystem sent by the reporter. The archive revealed the root Linux environment, including Ubuntu system files, Muse's documentation, integration code, app templates, memory files, and agent logs. SSH key files and a directory named "agents" with 113 subagent records were also present.

The agent's home directory contained several markdown files detailing the agent's SOUL, IDENTITY, USER, MEMORY, AGENTS, and TOOLS. A separate "docs" directory contained device integration guides and Markdown files describing browser use, connectors, payments, credentials, data handling, voice, goals, and scheduling. The filesystem also included skill directories for various integrations, such as Google Workspace, Meta's social apps, Outlook, travel, shopping, health services, home devices, and media generation.

Notably, a "spaces" framework was found, used by Muse to build and serve apps, along with various tools for document creation and a separate "magic-moment" skill for composing cards and videos. However, there is no concrete evidence that Muse uses Codex CLI as a coding agent.