Execution Loop (L*)

L* is Loom's internal execution loop. It is the engine behind Agent.run(), Session.run(), and Run.wait().

Phases

L* = (Reason -> Act -> Observe -> Delta)*

Phase	What happens
`Reason`	build messages, call the model, interpret next step
`Act`	execute tool calls and safety checks
`Observe`	feed results back into runtime context
`Delta`	decide whether to continue, renew, or finish

Public API	Internal loop effect
`agent.run(...)`	starts one L* execution
`session.run(...)`	starts one L* execution with session reuse
`run.events()`	streams runtime events emitted during L*
`RunResult`	materialized output after L* exits

L* behavior is controlled indirectly through: