MIRA OS is a self-directed AI agent that maintains a single continuous conversation thread without chat reset functionality. It uses PostgreSQL and PGVector for semantic search-based long-term memory retrieval, with memories designed to decay through momentum loss. The system auto-configures tools when dropped into the tools folder and composes system prompts from modular trinkets. It integrates with Anthropic’s Claude and employs first-person memory summaries with absolute timestamps to maintain continuity and recall across conversation segments.