Show HN: Hippo, Biologically Inspired Memory for AI Agents

Hippo has been released to solve the problem of AI agents forgetting information between sessions or context not being shared between different tools (Claude, Cursor, etc.).

Hippo is more than a simple storage system; it's a memory layer that mimics biological memory principles to decide 'what to forget'. It's based on SQLite and stores memories using Git-trackable Markdown and YAML formats.

Key Features:

• Cross-tool context sharing: Shares memory across various AI coding tools such as Claude Code, Cursor, and Codex, allowing workflows to be maintained even when switching tools.
• Intelligent memory management: Goes through decay, merge, and prune processes based on the importance of information, removing unnecessary noise and retaining only core lessons.
• Deduplication: Scans similar memories to find duplicate patterns and keeps the strongest information.
• Automated learning: Through the hippo sleep feature, it learns from Git commit history at the end of a session, organizes memories, and shares valuable lessons across projects.
• High portability: Since memory is managed as Markdown files within the project repository rather than being tied to a specific vendor, it's easy to move.

This tool works in a Node.js 22.5+ environment and can be used without any separate runtime dependencies.