Ogham is a shared memory MCP server that saves memories in one client and retrieves them in another. It uses hybrid search combining vector similarity and keyword matching, merged with Reciprocal Rank Fusion. It includes a knowledge graph where memories auto-link by embedding similarity and can be traversed with recursive CTEs.
It uses ACT-R inspired cognitive scoring to boost frequently accessed and recently used memories. It provides profile isolation to partition memories by context such as work, personal, or per-project. It is private by design, storing memories in the user's own PostgreSQL instance with no cloud service between the user and their data.
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