Read Claude Code project memory files. Without arguments, returns the MEMORY.md index listing all available memories. With a filename argument, returns the full content of that specific memory file. Use this to access project context, user preferences, feedback, and reference notes persisted across Claude Code sessions.

Cross-agent memory search with full-text matching. Unlike recall (which scopes to a single agent), search queries the entire memory pool. Ideal for finding related context across agents, projects, or time periods.

Store a memory for an agent. Memories are persisted across sessions and can be retrieved later. Use this to save important facts, events, lessons learned, or context.

Write or update a Claude Code project memory file (.md). Use this to persist project context, user preferences, feedback, and reference notes across Claude Code sessions. The filename must end in .md and contain only lowercase letters, digits, underscores, and hyphens (e.g. 'user_fabio.md', 'project_new_feature.md'). Path traversal is blocked.

Store a persistent memory for an agent. Survives across sessions. agent_id: stable identifier for your agent (UUID, DID, or name). tags: comma-separated (optional).

Store a memory. Persists across sessions and tools. Memories are organized into 3 tiers (active, session, long-term) automatically.