C3
An open-source AI agent that runs on your dev machine and does your work while you sleep.
C3 turns your always-on dev machine into an autonomous agent platform. Slack alerts and Discord messages trigger headless Claude Code sessions that investigate errors, trace code, create PRs, and report back. Watch the agent work live from your browser, or continue the conversation from your phone. Open source (Apache 2.0), bring your own machine, your own tunnel, your own channels.
How it works
Runs on YOUR machine
Not a sandboxed cloud agent. It has your repos, your secrets, your CLI tools, your database access. Same permissions as you.
Channel-triggered sessions
Slack alerts and Discord messages start headless Claude Code sessions. The agent investigates and reports back in the same thread.
Watch it work, resume anytime
Every session is streamed to a web UI and fully resumable. Agent ran at 3am? Open it on your phone at 9am and keep going.
Encode your expertise as prompts
Prompt templates turn your internal playbooks into agent instructions. A 200-line prompt tells the agent exactly how you investigate an outage.
Cron-driven automations
Schedule agents on a cron. Weekly cost reports, daily PR babysitting, overnight cleanup — runs on your machine, reports to your channels.
Open source, self-hosted
Apache 2.0. Bring your own machine, your own tunnel (Cloudflare Tunnel recommended), your own channels. No vendor lock-in.
Pricing
Start free. Upgrade when you need more.
Self-hosted
- Apache 2.0 license
- Runs on your own machine
- Discord, Slack, and cron triggers
- Bring your own Claude API key or Claude Max
- Full source on GitHub