The Open Agency Architecture ("OAA") is an AI alignment proposal by (among others) @davidad and @Eric Drexler.

See Davidad's Provably Safe AI Architecture - ARIA's Programme Thesis for the most up-to-date (2024 Feb 1) and quite readable explanation.

A shorter but older explanation is also available here.

Related:

Atlas Computing is the org intended to house OAA.
Gaia Network is a variant of an open agency architecture. Gaia Network is related to (the) OAA, but not directly descending from it.