SRE & On-Call

Your 3 AM
Incident Companion

When you're sleep-deprived and production is on fire, Caro validates every command before it can make things worse. Pattern-based safety that doesn't depend on AI judgement.

Get Started Free See Real Examples

Jobs Caro Does for SREs

What you hire Caro to do

Safe Production Command Execution

Pain: 5/5 Daily

Validate commands against 52+ dangerous patterns before they can destroy production.

Trigger: Running any command on production systems

Incident Response Acceleration

Pain: 5/5 Weekly

Generate diagnostic commands instantly during high-pressure incidents.

Trigger: PagerDuty alert at 3 AM

AI Hallucination Protection

Pain: 5/5 Daily

Catch when AI tools suggest dangerous commands with deterministic validation.

Trigger: Using any AI assistant for shell commands

Real Scenarios You'll Face

See how Caro handles actual production situations

The 2 AM Log Cleanup

Caught by Caro

Context: Production server running out of disk space. You need to free space fast.

Terminal
$ caro "delete all log files to free disk space"
Caro: find /var/log -name "*.log" -type f -delete
CRITICAL: Recursive delete in system directory without age filter
Use -mtime +7 to only remove logs older than 7 days
Safer alternative:
find /var/log -name "*.log" -type f -mtime +7 -delete

Lesson: Caro warns you before wiping logs you might need for post-incident analysis.

The Database Cleanup

Caught by Caro

Context: Need to clean up old backup files from the database server.

Terminal
$ caro "remove all backup files from database directory"
Caro: rm -rf /var/lib/postgresql/backups/*
HIGH RISK: Bulk deletion in database directory
Consider keeping recent backups, use --dry-run first
Safer alternative:
find /var/lib/postgresql/backups -name "*.sql.gz" -mtime +30 -delete

Lesson: Pattern matching catches operations in critical system paths.

The Permission Fix

Caught by Caro

Context: Application can't write to its data directory after a botched deployment.

Terminal
$ caro "fix permissions on the app directory"
Caro: chmod -R 777 /opt/app
HIGH RISK: chmod 777 creates security vulnerability
Use specific permissions (755 for dirs, 644 for files)
Safer alternative:
chmod -R u=rwX,g=rX,o=rX /opt/app

Lesson: Security anti-patterns are caught even when they "fix" the immediate problem.

The Kubernetes Cleanup

Safe to Run

Context: Evicted pods cluttering the cluster, need to clean them up.

Terminal
$ caro "delete all evicted pods in production"
Caro: kubectl get pods -n production --field-selector=status.phase=Failed -o name | xargs kubectl delete -n production
Safe: Targets only failed pods with explicit namespace

Lesson: Complex k8s commands generated correctly with proper selectors.

The Network Debug

Safe to Run

Context: API latency issues, need to find which endpoints are slow.

Terminal
$ caro "show all established connections to port 443 with latency"
Caro: ss -tnp state established '( dport = :443 )' | awk '{print $4}' | sort | uniq -c | sort -rn
Safe: Read-only network inspection

Lesson: Complex pipe chains generated correctly without memorizing ss/awk syntax.

Incident Response Runbooks

Common alerts and the commands you need

CRITICAL: API Response Time > 5s
1
Check current load
uptime && free -h && df -h
Quick system overview - load, memory, disk
2
Find slow processes
ps aux --sort=-%cpu | head -20
Top CPU consumers
3
Check connection counts
ss -s && ss -tnp | wc -l
Socket summary and total connections
4
Check recent logs for errors
journalctl -u api-server --since "5 minutes ago" --priority=err
Recent error-level logs from systemd
With Caro: Just describe what you need. Example: caro "show me what's using the most CPU"
CRITICAL: Disk Usage > 95%
1
Find what's using space
du -sh /* 2>/dev/null | sort -rh | head -10
Top-level directory sizes
2
Find large files
find / -type f -size +100M -exec ls -lh {} \; 2>/dev/null | sort -k5 -rh | head -20
Files larger than 100MB
3
Check log file sizes
find /var/log -name "*.log" -size +50M -exec ls -lh {} \;
Log files that might need rotation
4
Find old files to clean
find /tmp -type f -atime +7 -exec ls -lh {} \;
Temp files not accessed in 7 days
With Caro: Just describe what you need. Example: caro "show me what's using the most CPU"
CRITICAL: Pod CrashLoopBackOff
1
Check pod status
kubectl get pods -n production | grep -E "Error|CrashLoop|ImagePull"
Find problematic pods
2
Get pod events
kubectl describe pod <pod-name> -n production | tail -20
Recent events (OOM, liveness failures, etc)
3
Check previous container logs
kubectl logs <pod-name> -n production --previous --tail=100
Logs from crashed container
4
Check resource usage
kubectl top pods -n production --sort-by=memory | head -10
Memory usage across pods
With Caro: Just describe what you need. Example: caro "show me what's using the most CPU"

When AI Gets It Wrong

Real examples of AI hallucinations Caro catches

AI Suggests Destructive Command

You asked an AI: "Clean up the project directory"

AI Assistant
rm -rf ./* Marked as "Safe"
→
Caro Safety Layer
CRITICAL: rm -rf with wildcard - could delete entire directory contents
Be specific about what to delete: rm -rf ./build ./node_modules

AI Misses Context

You asked: "Restart the service to apply changes"

AI Assistant
systemctl restart nginx && systemctl restart postgresql Marked as "Safe"
→
Caro Safety Layer
HIGH: Service restart affects production traffic. PostgreSQL restart causes connection drops.
Consider graceful reload: systemctl reload nginx

AI Uses Wrong Platform Syntax

You asked: "Find files modified today" (on macOS)

AI Assistant
find . -mtime 0 Marked as "Safe"
→
Caro Safety Layer
Platform mismatch: -mtime 0 behavior differs between BSD (macOS) and GNU (Linux)
On macOS: find . -mtime -1 (within last 24h)

Why Pattern-Based Beats AI-Based

Deterministic

Same input = same result. No randomness, no "sometimes catches it."

Auditable

You can see exactly which pattern triggered. Essential for post-incident review.

Can't Hallucinate

Regex patterns don't make things up. They match or they don't.

Fast

<50ms validation. No API call, no waiting.

52+ Patterns We Block

A sample of what Caro catches

rm -rf / System destruction
rm -rf ~ Home directory wipe
:(){:|:&};: Fork bomb
dd if=/dev/zero of=/dev/sda Disk wipe
chmod -R 777 / System-wide permission change
mkfs.ext4 /dev/sda1 Filesystem format
> /etc/passwd Critical file truncation
mv /* /dev/null Mass file destruction
wget -O- | sh Piped remote execution
curl | bash Piped remote execution

Plus: privilege escalation, network backdoors, history clearing, and more. See full list →

Try Caro in 30 Seconds

No account. No API key. No data collection. Just safer shell commands.

bash <(curl --proto '=https' --tlsv1.2 -sSfL https://setup.caro.sh)

Then run:

caro "find files modified in the last 7 days"
Installs to ~/.cargo/bin
Single binary, no dependencies
Uninstall anytime: cargo uninstall caro

Prefer to build from source? See all installation options →