loop
alirezarezvani/claude-skills
Schedule autonomous experiment loops at custom intervals (10min to monthly) using cron scheduling.
What is loop?
The loop skill starts recurring experiment runs on a user-selected schedule (10 minutes, hourly, daily, weekly, or monthly). It uses CronCreate to manage cron jobs and automatically executes one experiment iteration per cycle, tracking results and stopping after 5 consecutive crashes.
- Schedule experiments to run automatically at 10min, 1h, daily, weekly, or monthly intervals
- Execute one experiment iteration per cycle with automatic strategy escalation
- Track experiment history in results.tsv and stop loops after 5 consecutive crashes
- Store loop metadata (cron ID, interval, start time) in loop.json for management
- Stop active loops on demand and persist results across loop restarts
How to install loop
npx skills add https://github.com/alirezarezvani/claude-skills --skill loop- An autoresearch experiment already set up with config.cfg, program.md, and results.tsv
- CronCreate tool available for scheduling recurring jobs
- Git repository with autoresearch/{domain}/{name} branch structure
How to use loop
- 1.Run /ar:loop {domain}/{name} to start a new loop (or omit experiment to select from list)
- 2.Choose an interval when prompted: 10m, 1h, daily, weekly, or monthly (or pass as argument)
- 3.The skill creates a cron job that runs one experiment iteration per cycle
- 4.Check progress with /ar:status or stop the loop with /ar:loop stop {domain}/{name}
- 5.Loop auto-expires after 3 days; re-run /ar:loop to restart and continue from last results
Use cases
- Run rapid experiments every 10 minutes while monitoring in real-time
- Execute overnight experiments daily at 9am without manual intervention
- Schedule long-running experiments weekly or monthly for slow iterative improvement
- Automatically test API performance or code changes on a recurring schedule
- Maintain continuous experiment loops that auto-expire after 3 days and can be restarted
- Researchers running iterative autoresearch experiments
- Engineers optimizing code or API performance over time
- Teams running unattended overnight or background experiments
- Anyone needing scheduled, autonomous experiment execution
loop FAQ
The loop automatically deletes the cron job and alerts you. Results persist, so you can fix the issue and restart the loop.
No. Only one loop per experiment is allowed. Stop the existing loop before starting a new one.
Loops auto-expire after 3 days (CronCreate limit). Results persist, so re-run /ar:loop to restart and continue from where it left off.
Yes, if they're on different git branches (which they are by default — each experiment gets its own autoresearch/{domain}/{name} branch).
It reads config, program.md, and results.tsv; makes ONE change to the target file; commits; runs the evaluator; and records the outcome.
Full instructions (SKILL.md)
Source of truth, from alirezarezvani/claude-skills.
name: "loop" description: "Start an autonomous experiment loop with user-selected interval (10min, 1h, daily, weekly, monthly). Uses CronCreate for scheduling. Use when the user runs /ar:loop or asks to run an autoresearch experiment continuously on a schedule." command: /ar:loop
/ar:loop — Autonomous Experiment Loop
Start a recurring experiment loop that runs at a user-selected interval.
Usage
/ar:loop engineering/api-speed # Start loop (prompts for interval)
/ar:loop engineering/api-speed 10m # Every 10 minutes
/ar:loop engineering/api-speed 1h # Every hour
/ar:loop engineering/api-speed daily # Daily at ~9am
/ar:loop engineering/api-speed weekly # Weekly on Monday ~9am
/ar:loop engineering/api-speed monthly # Monthly on 1st ~9am
/ar:loop stop engineering/api-speed # Stop an active loop
What It Does
Step 1: Resolve experiment
If no experiment specified, list experiments and let user pick.
Step 2: Select interval
If interval not provided as argument, present options:
Select loop interval:
1. Every 10 minutes (rapid — stay and watch)
2. Every hour (background — check back later)
3. Daily at ~9am (overnight experiments)
4. Weekly on Monday (long-running experiments)
5. Monthly on 1st (slow experiments)
Map to cron expressions:
| Interval | Cron Expression | Shorthand |
|---|---|---|
| 10 minutes | */10 * * * * | 10m |
| 1 hour | 7 * * * * | 1h |
| Daily | 57 8 * * * | daily |
| Weekly | 57 8 * * 1 | weekly |
| Monthly | 57 8 1 * * | monthly |
Step 3: Create the recurring job
Use CronCreate with this prompt (fill in the experiment details):
You are running autoresearch experiment "{domain}/{name}".
1. Read .autoresearch/{domain}/{name}/config.cfg for: target, evaluate_cmd, metric, metric_direction
2. Read .autoresearch/{domain}/{name}/program.md for strategy and constraints
3. Read .autoresearch/{domain}/{name}/results.tsv for experiment history
4. Run: git checkout autoresearch/{domain}/{name}
Then do exactly ONE iteration:
- Review results.tsv: what worked, what failed, what hasn't been tried
- Edit the target file with ONE change (strategy escalation based on run count)
- Commit: git add {target} && git commit -m "experiment: {description}"
- Evaluate: python {skill_path}/scripts/run_experiment.py --experiment {domain}/{name} --single
- Read the output (KEEP/DISCARD/CRASH)
Rules:
- ONE change per experiment
- NEVER modify the evaluator
- If 5 consecutive crashes in results.tsv, delete this cron job (CronDelete) and alert
- After every 10 experiments, update Strategy section of program.md
Current best metric: {read from results.tsv or "no baseline yet"}
Total experiments so far: {count from results.tsv}
Step 4: Store loop metadata
Write to .autoresearch/{domain}/{name}/loop.json:
{
"cron_id": "{id from CronCreate}",
"interval": "{user selection}",
"started": "{ISO timestamp}",
"experiment": "{domain}/{name}"
}
Step 5: Confirm to user
Loop started for {domain}/{name}
Interval: {interval description}
Cron ID: {id}
Auto-expires: 3 days (CronCreate limit)
To check progress: /ar:status
To stop the loop: /ar:loop stop {domain}/{name}
Note: Recurring jobs auto-expire after 3 days.
Run /ar:loop again to restart after expiry.
Stopping a Loop
When user runs /ar:loop stop {experiment}:
- Read
.autoresearch/{domain}/{name}/loop.jsonto get the cron ID - Call
CronDeletewith that ID - Delete
loop.json - Confirm: "Loop stopped for {experiment}. {n} experiments completed."
Important Limitations
- 3-day auto-expiry: CronCreate jobs expire after 3 days. For longer experiments, the user must re-run
/ar:loopto restart. Results persist — the new loop picks up where the old one left off. - One loop per experiment: Don't start multiple loops for the same experiment.
- Concurrent experiments: Multiple experiments can loop simultaneously ONLY if they're on different git branches (which they are by default — each experiment gets
autoresearch/{domain}/{name}).
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