# Databases — Agent Architecture Layer

> Persistent structured storage for agent state and outputs

1 tool mapped to this layer of an AI agent architecture.

This is one layer of an [AI agent architecture](https://www.frameworkr.ai/blog/what-is-an-ai-agent-architecture.md), not a standalone product category. Design the blueprint first, then pick tools.

- [Supabase](https://www.frameworkr.ai/tools/supabase.md): Open-source Firebase alternative — Postgres, auth, storage, and pgvector in one platform


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_Frameworkr — https://www.frameworkr.ai_