Stateful environments for vertical agents — Josh Purtell, Synth Labs
Jul 22, 2025 · 6:51
Josh Purtell of Synth Labs argues that stateful environments—containerized, network-bounded workspaces that capture external state—make it easier to build effective agents for vertical applications like finance and health. By keeping the application logic separate from the agent, developers can revamp their agent when new models come out without rewriting everything. The environment exposes a tailored representation (e.g., just the terminal, not the whole OS) and supports resets and rollbacks, enabling techniques like tree search that improve long-horizon tasks. Purtell also notes that network boundaries allow reliable multi-agent setups and asynchronous work. The concepts are implemented in the open-source Synth AI Environments repository.
