Block

Block is the company led by Jack Dorsey, best known for the payment services Square and Cash App. More recently it has moved into AI tooling, including Buzz, an open workspace where employees and software agents share the same team chat, and an open agent framework called goose.

Its angle is identity: once AI agents start doing real work, Block argues, you need to know exactly who or what performed each action, and be able to trust that record across tools.