--- title: "Terminal mastery, unlocked" description: "Transform natural language into safe POSIX shell commands. 52+ dangerous patterns blocked. Zero data collection. Works offline on macOS, Linux, BSD, and Windows." url: "https://caro.sh/" markdown_url: "https://caro.sh/index.md" lang: "en" type: "website" image: "https://caro.sh/og/index.png" --- Companion Agent # Never run by accident again `rm -rf /` A specialized POSIX shell command agent for Claude users. Validates AI-generated commands with safety-first design, detects dangerous patterns, and ensures POSIX compliance. Finally, an AI assistant that won't crash production — Engineering Teams Everywhere [Install Caro](https://caro.sh/#download) [See Demo](https://caro.sh/#video-demo) [Zero Telemetry](https://caro.sh/telemetry) 52+ Safety Patterns 100% Local Open Source SEE IT IN ACTION ## 30 Seconds to Terminal Mastery Watch how Caro transforms natural language into safe POSIX commands ## Try It Yourself Experience the difference. Start in vanilla mode, then install Caro to unlock natural language commands. ## Experience the Difference Try the terminal below. Type commands, explore the filesystem, then install Caro to see the magic. \~/mystery Caro: Ready macOS zsh \~/mystery Try asking Caro: Type `ls` to explore, `cat README.md` to read files, or try natural language... ## Built for How You Work Whether you're accelerating your career, protecting your org, or living in the terminal - Caro adapts to you. ![](https://caro.sh/kyaro/icons/running.svg) ### The Accelerator Individual Developer The Friction You're smart. But memorizing 500 flags and options for tools you use twice a month? That's not intelligence, it's trivia. The Unlock Express intent in English. Get validated, runnable commands. Ship faster without the Stack Overflow detour. - 10x faster command discovery - Learn shell idioms naturally - Build career-defining skills ![](https://caro.sh/kyaro/icons/danger.svg) ### The Guardian Security & Platform Lead The Risk Every AI tool your team uses is a potential data leak. Cloud APIs see your infrastructure. Your secrets. Your blind spots. The Shield 100% local execution. Zero data collection. Pre-execution validation catches dangerous commands before they run. - Air-gapped friendly - 52+ dangerous patterns blocked - Full audit capability ![](https://caro.sh/kyaro/icons/asking.svg) ### The Operator SRE / DevOps Engineer The Chaos Production is down. You're SSH'd into a box you've never seen. Is it BSD? Linux? What's the find syntax here again? The Edge Platform-aware commands. macOS vs Linux vs BSD - Caro knows the difference. You focus on the problem, not the syntax. - Cross-platform intelligence - Instant command generation - Works in any terminal ## Moments That Hurt Every developer knows these feelings. Caro makes them disappear. ### "Did I type that right?" Staring at a command you found on Stack Overflow. Is that a backtick or a quote? Will this delete everything or just the logs? `rm -rf /var/log/*.log` ...right? With Caro You say: "Delete old log files safely" Caro: `find /var/log -name "*.log" -mtime +30 -delete` Safe ### "What if this breaks prod?" That sinking feeling before hitting Enter on a production server. No undo. No sandbox. Just raw fear. `chmod -R 777 /` copied from tutorial... With Caro BLOCKED This command would make all system files world-writable. Suggested safe alternative: `chmod 755 ./your-directory` ### "What runs on this machine?" BSD? Linux? macOS? Is it GNU find or BSD find? Why does every server have different flags? `find . -regex ".*\.log" -print0` works on my mac but... With Caro Detected: Ubuntu 22.04 Using GNU coreutils syntax: `find . -regextype posix-extended -regex ".*\.log" -print0` ## Why Caro? A companion agent built for safety, empathy, and expertise ![](https://caro.sh/kyaro/icons/danger.svg) ### Never Nuke Production Again Blocks rm -rf /, fork bombs, and 50+ other career-ending commands BEFORE you can run them. Your 2 AM self will thank you. ![](https://caro.sh/kyaro/icons/ready.svg) ### Your Data Stays Yours[\*](https://caro.sh/telemetry) Zero telemetry. Zero cloud API calls. Run in air-gapped networks. Pass any compliance audit. Your commands never leave your machine. ![](https://caro.sh/kyaro/icons/success.svg) ### Commands That Actually Work Generates commands that work on your Mac, your Linux server, and your coworker's BSD box. First time. Every time. ![](https://caro.sh/kyaro/icons/running.svg) ### Fast Enough to Not Break Flow Sub-2s inference on Apple Silicon. No waiting for cloud APIs. No wondering if the server is down. Just answers. See exactly what Caro blocks and why [View safety patterns →](https://caro.sh/#demo) COMING SOON ## Org Visibility for Teams See what commands your team runs. Audit shell activity across your organization. Identify training opportunities and security risks—without invading privacy. - Aggregated command analytics (no individual tracking) - Pattern detection for dangerous command attempts - Self-hosted dashboard—your data never leaves your network Join 200+ engineering leaders on the waitlist. No spam, just launch updates. ## 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 →](https://github.com/wildcard/caro#installation)