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+# RFC: Kaelis Memory Extension for Shared Persistent Memory
+
+## Summary
+This RFC proposes a set of MCP tools extending the Model Context Protocol with shared persistent memory capabilities, including multi-agent collaboration spaces, permission management, version control, and self-evolving memory.
+
+## Motivation
+Current MCP tools are well-suited for stateless interactions, but multi-agent collaboration lacks a shared persistence layer for long-running tasks. This extension provides:
+- Shared memory spaces with fine-grained permissions
+- Full-text search (FTS5) across memories
+- Optimistic locking for concurrent access
+- Self-evolving memory optimisation
+- Semantic publish-subscribe for memory change notifications
+
+## Specification
+Five new MCP tools are proposed:
+
+### memory_remember
+Write or update a shared memory in a collaborative space.
+
+### memory_recall
+Search memories within a shared space.
+
+### memory_forget
+Delete a memory with audit trail.
+
+### memory_evolve
+Trigger self-evolution on specified memories.
+
+### memory_subscribe
+Subscribe to memory changes matching tags or patterns.
+
+Full JSON schemas are available in the reference implementation.
+
+## Security Considerations
+- Four-tier role model: owner, admin, writer, reader
+- All write/delete operations are audited
+- Optimistic locking prevents concurrent modification conflicts
+
+## Reference Implementation
+Kaelis project: https://github.com/Alex-conder/Kaelis-archive
+Implementation files: `core/shared_memory_space.py`, `core/mcp/server.py`
+
+## Backward Compatibility
+This extension does not modify existing MCP protocol behaviour. All new tools are optional.