tech
March 14, 2026
You built an AI memory system. Now your agent needs hands. Here are 6 extensions that compound
The two-door principle. Why every Open Brain extension needs an agent door and a human door, and why a chat window alone will always be a keyhole into your own data.

TL;DR
- The 'two-door principle' is essential for Open Brain extensions.
- Every extension needs an agent door and a human door.
- A chat window alone offers limited access to data.
- Chat windows are compared to a 'keyhole' into personal data.
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