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by sylweriusz • Search & Retrieval
An MCP server that provides persistent, graph-based memory for AI assistants using Neo4j with semantic vector search and graph operations.
Persist and retrieve contextual memories as graph nodes with observations and metadata across project-specific Neo4j databases.
Semantic vector search combined with exact matching and graph traversal (via Neo4j GDS) to surface the most relevant memories.
Create and manage typed relationships, perform batch memory operations, and run temporal queries to track how knowledge evolves.
This server stores memories as interconnected graph nodes and observations, enabling agents to remember, search, connect, and organize knowledge over time. It combines semantic vector search (via Neo4j GDS), exact matching, wildcards, and graph traversal in a unified API with batch operations and temporal filtering. Built as an MCP-native toolset, it integrates with Claude Desktop and supports multi-database project isolation. Note: the GDS plugin (e.g., DozerDB setup) is required for vector operations.
Create memories with observations and relationships. **Pattern**: Search→Create→Connect. **Observations**: Self-contained context units (what/when/where/why/impact). **LocalIds**: Cross-references within THIS request only. **Limits**: 50 memories, 200 relations. **Quality**: Each observation = complete detective notes answering setting/action/actors/evidence/impact/significance.
Unified search/retrieval. **Query**: text, IDs array, or "*". **Context**: minimal (lists), full (everything), relations-only (graph). **Temporal**: createdAfter "7d"/"2024-01-15". **Graph**: traverseFrom + relations + depth. **Always search before creating**. Updates access timestamps for analytics.
Update/delete memories, manage observations/relations. **Operations**: update (properties), delete (cascade), add-observations (append insights), create-relations (link existing). **Atomic**: All succeed or all fail. **Quality**: One substantial observation per session - complete context stories, not fragments.
Switch active database context (creates if missing). ALL subsequent operations use this DB. Call once per session/project. Like 'cd' for memories. **Session-scoped**: Establishes context for entire workflow, not per-operation.
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