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Dev.to
Dev.to
7/19/2026
Zep gives my agent perfect recall. It still can't answer "average per group" about its own memory.

Zep gives my agent perfect recall. It still can't answer "average per group" about its own memory.

Short summary

Zep (Graphiti) excels at temporal knowledge-graph recall for AI agents but cannot perform aggregations like GROUP BY or JOIN on stored memory. The author's product nlqdb fills this gap by provisioning a real Postgres that agents query in English, enabling analytical questions over memory. The two tools compose: Zep for recall, nlqdb for analysis — pick based on the question type your agent needs to answer.

  • Zep is strong for temporal recall and entity resolution but lacks a query planner for aggregations
  • nlqdb provides a Postgres-backed analytical store agents query in English for GROUP BY/JOIN/HAVING operations
  • The two tools compose: Zep as recall layer, nlqdb as analytical store

Generated with AI, which can make mistakes.

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