Level 8 Practice: Implement Independent Tasks in Parallel
About 5 minutes
About This Tutorial
Section titled “About This Tutorial”For the concepts and completion standards, first read Codex Levels 0-10.
Parallel work is not simply more simultaneous tasks. Jobs that share files or assumptions create merge conflicts and inconsistent results.
What You Will Complete
Section titled “What You Will Complete”You will produce a conflict-aware task split and integrated result. The goal is not the amount of work; it is a reproducible Level 8 delegation boundary and completion check.
Step 1: Set the Boundary
Section titled “Step 1: Set the Boundary”Before handing work to Codex, state the goal, scope, exclusions, and completion criteria. Adapt this prompt to your project.
Split this change into independent parallel tasks. Define owned files, dependencies, completion criteria, and integration order. Do not assign the same file to multiple tasks.Check: Continue only when Codex can restate the scope and unresolved questions before acting.
Step 2: Practice
Section titled “Step 2: Practice”- Split work into units with separate ownership, such as profile, projects, and tests.
- Assign inputs, owned files, completion criteria, and exclusions to each task.
- Run in worktrees or independent threads, then integrate in a defined order and revalidate.
Keep the scope stable and inspect the output or diff after each stage.
Step 3: Verify Completion
Section titled “Step 3: Verify Completion”You are done when each task is independently testable, integrated checks pass, and conflict ownership is explicit.
Record the actions performed, supporting evidence, and anything not verified. Also record why work stopped when a condition was not met.
Troubleshooting
Section titled “Troubleshooting”Codex exceeded the requested scope
Section titled “Codex exceeded the requested scope”Stop the task and inspect the diff. Add explicit owned files and exclusions to the prompt, then rerun only the approved scope.
Completion is difficult to judge
Section titled “Completion is difficult to judge”Replace vague criteria such as “implement it” with observable files, commands, pages, or review results.
Next Step
Section titled “Next Step”Continue to Level 9 to expand the delegation boundary by one step.
See the references for the external specifications and background sources used on this page.[1][2][3]