Ralph Wiggum Loop
Unlimited autonomous iteration pattern in Claude Code. The Ralph Wiggum plugin launches a loop: Claude attempts the task, evaluates the result, retries until success or max iterations. Useful for tasks with clear success criteria (passing tests, clean build, zero linter warnings). The original version, described by Geoffrey Huntley, is one line of bash feeding the same instruction file to the agent, with a fresh context window every round: the agent does not drag the history of its failed attempts, it only keeps what is written to disk (the code, the tests, the plan). The `/goal` commands in Codex and Claude Code are its native descendants, with one big difference: they stay in the same session, and in Claude Code a second, smaller model decides after each turn whether the condition holds. Named after the Simpsons character who "keeps trying until he gets it".
Strengths
- Autonomous iteration until success, zero human intervention on repetitive tasks
- Ideal for CI pipelines: passing tests, clean build, zero linter warnings
- Eliminates the manual "run → observe → fix → repeat" cycle for automatable tasks
Limitations
- Risk of infinite loop if success criteria are poorly defined or never reachable
- High token consumption, each iteration = a full API call
- Dangerous on file modification tasks without rollback, hard to undo failed iterations
Best for
- Automatic bug fixing until the full test suite passes
- TypeScript type resolution until npx tsc --noEmit returns 0 errors
- Automatic linter fixing until biome check returns no warnings