Walk away. It gets stronger every cycle.
Drop in a self-running agent loop that does real work, scores itself on a grounded 0–1 reward, and rewrites its own next prompt to get measurably stronger on every ~2-minute cycle — no babysitting.
1. See it
2. How it works
3. Why it wins
4. Use it to…
Unattended coding marathons
Let the loop attempt, verify, and iterate on coding tasks across many cycles while you're away, returning measurably stronger attempts.
Self-rewriting prompt loops
Let the agent use its 0–1 reward to rewrite its own next prompt each cycle, surfacing which prompt strategies actually score higher.
Verified research-and-report runs
Set it to gather, verify, and score findings on a grounded 0–1 scale every ~2-min cycle, accumulating real results with no hand-holding.
5. The shift it creates
- One model = one point of failure
- Hallucinations slip through unchecked
- No quality floor you can trust
- Runs unattended — it schedules its own wake-ups and keeps cycling while you work on something else.
- Improves itself measurably
- Drop-in and free
6. What's inside
7. The details
How it actually works
Exactly what it does — and when.
A solo developer drops cycle.mjs into a Claude Code session at 11 PM, pointing it at a backlog of failing Jest tests. Every ~2 minutes the agent wakes, attempts a fix, runs the test suite, scores 0.0–1.0 based on tests passed, and tightens its own prompt to prioritize the remaining failures. By morning, 14 of 22 tests pass and the evolved prompt reads noticeably different from the original — now biased toward null-checking database returns first.
Questions, answered
Ready to put The Autonomous Mega-Cycle Kit to work?
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