One personal agent needs four distinct capabilitiesIdentity, authority, context and payment now have concrete implementation examples. The decisive Ribbita test is how those parts work together for a user.TIBBIR UNIVERSE THIS IS TIBBIR How to get TIBBIR Ribbit in numbers Connected clues Account archive Bridge & contracts On-chain research Connections Community The story Reading room Network map Timeline Findings Source library Conversations People & companies Open questions Export & reuse