Ralph Wiggum Codex

Ralph Wiggum For Codex

Codex-native Ralph loop for long-running autonomous task completion.

This skill is designed to be invoked as $ralph-wiggum-codex. The shell runner is support infrastructure for the skill, not the product story.

When To Use

Use this skill when:

• The task is too large or uncertain for a single turn.
• You want the agent centered on the user request and acceptance criteria, not just test output.
• You want a mandatory work phase followed by a fresh-context review phase.
• You need resumable state, explicit blocked handling, and long-run drift control.

Do not use this skill when:

• The request is a quick one-shot edit or explanation.
• The user wants manual turn-by-turn control.
• The task is mostly a prompt rewrite, not execution. Use $ralph-prompt-generator first in that case.

Optional Prompt Generator

When the request is underspecified, invoke $ralph-prompt-generator first to turn it into a Ralph-ready prompt file.

Use the companion first when:

• The objective is fuzzy.
• Acceptance criteria are missing.
• Source-of-truth artifacts are unclear.
• You want review checkpoints before starting the long run.

Companion handoff pattern:

1. Run $ralph-prompt-generator with the raw request.
2. Review the saved planning artifacts after Steps 1-2.
3. Review the saved critique after Step 4.
4. Use the final prompt saved at docs/prompt-improver-spec/final-prompts/.md.
5. Run the short Ralph-ready invocation snippet it returns at the end.

Skill-First Operating Contract

When this skill is invoked, execute this flow:

1. Collect or infer:

• cwd
• objective text
• acceptance criteria
• optional source-of-truth artifacts
• optional verification commands
• progress scopes (--progress-scope) for anti-no-op protection
• runtime caps when the run needs them

1. Materialize repo-backed state under /.codex/ralph-loop/:

• objective.md
• acceptance-criteria.md
• feedback.md
• work-summary.md
• review-feedback.md
• review-result.txt

1. Start the loop runner in objective-first mode.

1. For each iteration:

• run a fresh-context work phase
• run optional verification
• run a fresh-context review phase
• continue until the reviewer can honestly ship the task or confirm a real blocker

1. If blocked, capture the blocker in RALPH-BLOCKED.md, stop with task_blocked, and wait for updated task/feedback files before resuming.

Execution Command Template

~/.codex/skills/ralph-wiggum-codex/scripts/ralph-loop-codex.sh \
  --cwd /path/to/repo \
  --objective-file /path/to/repo/.codex/ralph-loop/objective.md \
  --acceptance-file /path/to/repo/.codex/ralph-loop/acceptance-criteria.md \
  --feedback-file /path/to/repo/.codex/ralph-loop/feedback.md \
  --max-iterations 40 \
  --max-stagnant-iterations 6 \
  --progress-scope "src/" \
  --idle-timeout-seconds 900 \
  --hard-timeout-seconds 7200 \
  --timeout-retries 1 \
  --validate-cmd "npm run lint" \
  --validate-cmd "npm run test"

Core Loop Behavior

The runner is a mandatory work/review loop:

• Work phase: executes against the objective, acceptance criteria, source of truth, and feedback.
• Optional verification: runs after the work phase when configured.
• Review phase: re-enters with fresh context and decides SHIP, REVISE, or BLOCKED.

Completion is objective-first:

• The task is complete only when the work phase reports COMPLETE, the review phase decides SHIP, and any configured verification passes.
• A real blocker stops the loop as task_blocked.
• --progress-scope plus no_change_justification only prevents fake no-op completion. It is not the product definition of success.

Work and Review Contracts

Work schema (work-schema.json):

• status: IN_PROGRESS, BLOCKED, COMPLETE
• assessment: concise statement of progress against the objective and acceptance criteria
• evidence: non-empty array of concrete evidence
• next_step: one highest-impact next step
• blocker_reason (optional but required when status=BLOCKED)
• no_change_justification (optional)

Review schema (review-schema.json):

• decision: SHIP, REVISE, BLOCKED
• assessment: concise review judgment
• feedback: actionable review guidance or ship confirmation
• evidence: non-empty array of concrete evidence

Core Files

• .codex/ralph-loop/state.env
• .codex/ralph-loop/objective.md
• .codex/ralph-loop/acceptance-criteria.md
• .codex/ralph-loop/feedback.md
• .codex/ralph-loop/work-summary.md
• .codex/ralph-loop/review-feedback.md
• .codex/ralph-loop/review-result.txt
• .codex/ralph-loop/RALPH-BLOCKED.md
• .codex/ralph-loop/.ralph-complete
• .codex/ralph-loop/work-schema.json
• .codex/ralph-loop/review-schema.json
• .codex/ralph-loop/iteration-history.md
• .codex/ralph-loop/auto-feedback.md
• .codex/ralph-loop/run-summary.md
• .codex/ralph-loop/validation/
• .codex/ralph-loop/codex/iteration---attempt-.jsonl

Stop Reasons

• task_complete
• task_blocked
• max_iterations_reached
• max_consecutive_failures_reached
• max_stagnant_iterations_reached
• stop_file_detected

Resume And Stop

Resume:

~/.codex/skills/ralph-wiggum-codex/scripts/ralph-loop-codex.sh \
  --cwd /path/to/repo \
  --resume

Stop safely:

touch /path/to/repo/.codex/ralph-loop/STOP

References

• Harness principles: references/harness-principles.md
• Operational runbook: references/runbook.md
• Reliability vNext: references/reliability-vnext.md

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: MattMagg
• Source: MattMagg/ralph-wiggum-codex
• License: MIT

Install and usage instructions live in the source repository linked above.