Phase-Level State Abstraction
In agent runtime architecture, a phase-level state represents a coarse, semantically meaningful stage of work (such as planning, implementation, verification, repair, or handoff) rather than an individual model call or micro-level tool action. Within a phase-level state, the agent maintains an uninterrupted reasoning loop and full autonomy to select tools, edit files, and iterate. The runtime intervenes only at phase boundaries to refresh context and enforce transition contracts, preventing reasoning fragmentation caused by micro-orchestrated node dispatch.
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Prep Sessions
Engineering State-Bound Execution Runtimes for Autonomous Agents @ University of Michigan - Ann Arbor
Ch.2 Agent Runtime Design and Execution Framework - Engineering State-Bound Execution Runtimes for Autonomous Agents @ University of Michigan - Ann Arbor
Context and Contract Boundaries in Phase Execution - Engineering State-Bound Execution Runtimes for Autonomous Agents @ University of Michigan - Ann Arbor
Related
State as Context-and-Contract Boundary
Phase-Level State Abstraction
Evidentiary Hierarchy of Transition Checks
StateM Ordered Transition Protocol
StateM Agent-Native Runtime
In StateM, how does treating each phase-level state as a context boundary prevent an agent from having to infer its operational obligations from an append-only terminal log?
In StateM's contract boundary, what component evaluates pre-commit checks before a transition commits, and what is the operational outcome when requirements are not met?
In StateM, what is the specific role of the exit hook (
out_hook) when an agent departs a state?In StateM, entering a state establishes a context boundary by erasing prior history to ensure the agent focuses only on state-local instructions.
According to StateM's context boundary model, what four elements are exposed to the agent by the entry hook (
in_hook) upon entering a state?Explain how StateM uses both context and contract boundaries at the phase-level state to prevent distinct operational failure modes during agent execution.
StateM Ordered Transition Protocol
Evidentiary Hierarchy of Transition Checks
Phase-Level State Abstraction
Learn After
Match each architectural concept to its defining scope in agent runtime execution.
Arrange the stages of a phase-level execution cycle in chronological order from stage initiation to boundary transition.
Analyze why Design A degrades agent problem-solving performance compared to Design B, and identify what internal condition Design B preserves during a stage of work to prevent this degradation.