AI Systems Atlas

H-03Plan → Execute

/harnesses/plan-execute

Plan the whole task up front, then run the steps without further deliberation.

Step-by-step walkthrough5 steps
  1. The whole plan is written before anything runs.
  2. Steps are laid out as a fixed sequence.
  3. Execute step 1…
  4. …step 2…
  5. …step 3. Cheap and predictable, if the plan was right.
Key insight

Separating planning from execution makes runs cheap, auditable and parallelizable — you can review the plan before anything happens.

Failure mode

The plan is frozen at the moment of least information. Anything the planner didn’t anticipate breaks the run.

Further reading
RelatedReplannerReAct loop

Elsewhere in the atlas

Security →Evals →Context →Coding Agents →Tools →Ops →