Collection

Best MCP servers for agent memory and knowledge

MCP servers that give an agent persistent memory, a knowledge graph, or a vector store. What they hold tends to accumulate quietly and is rarely reviewed, which makes their access controls worth checking. Ranked by OWASP MCP Top 10 score.

Ranked — all 14

  1. 1com.geiant/mcp-perceptionGeospatial AI MCP server — satellite imagery, embeddings, weather, GNS governanceVOUCH76·B
  2. 2io.github.DotNova/context-layerIntelligent context infrastructure for AI teams: knowledge graph, sessions, tasks, documents.VOUCH75·B
  3. 3io.github.archetypal-ai/archetypal-aiPersistent memory for AI agents. recall, remember, checkpoint — soul preservation.VOUCH71·C
  4. 4io.github.bighippoman/memoirStructured session journals for AI agents. Persistent memory across sessions.VOUCH71·C
  5. 5io.github.DeusData/codebase-memory-mcpPersistent codebase knowledge graph. Survives session restarts and context compaction.VOUCH71·C
  6. 6io.github.KairosMobius/nexus-memory-mcpPersistent semantic memory for AI agents with knowledge graphs and Intelligence Packs.VOUCH71·C
  7. 7io.github.ArtKeyAi/bhived-mcpShared knowledge graph, skills, and tool discovery for AI agents through the Model Context Protocol.VOUCH68·C
  8. 8@modelcontextprotocol/server-memoryMCP server for enabling memory for Claude through a knowledge graphVOUCH68·C
  9. 9io.github.batook22/project-knowledge-mcpCross-project knowledge graph for MCP — map features across mobile, backend, and admin codebases.VOUCH64·C
  10. 10DeusData/codebase-memory-mcpHigh-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds…VOUCH63·C
  11. 11io.github.420247jake/session-forgePersistent memory and session intelligence for AI coding assistants. Zero config.VOUCH63·C
  12. 12io.github.alphaonedev/ai-memoryPersistent memory for any AI — zero token cost until recallVOUCH63·C
  13. 13io.github.hifriendbot/cogmemai95.10% LongMemEval (highest published). Encrypted persistent memory for Ai coding assistants.VOUCH63·C
  14. 14io.github.keshrath/agent-knowledgeCross-session memory for AI agents - knowledge graph, scoring, semantic searchVOUCH63·C

How we rank

Every server here is ordered by its trust score — points earned across the OWASP MCP Top 10 checks that apply to it, scaled to 100. Nothing on this page is editorial or paid. The rubric, the ten checks and the band boundaries are all written out on how we score MCP server trust.

Servers with no score are not listed here at all. Most MCP servers are credential-gated and have never been scanned — unknown is not unsafe, and we will not rank a number we did not measure.

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