Handler
Runs AI coding agents in isolated sandboxes with a visual command center, built-in terminals, and forking to explore alternatives.
A control plane for running AI coding agents in isolated sandboxes, solving the problem of managing multiple agents and maintaining human oversight. It targets software developers and engineering teams in startups and enterprises. It is positioned as an open-source, self-hosted tool that keeps the human in the loop, with a visual canvas and forking capabilities.
Key features
- Visual canvas with built-in terminal
- Instant isolated sandboxes with Firecracker microVMs
- Fork environments to explore alternatives
- Session persistence with tmux and auto-reconnect
- MCP server registry and Git integration
- Agent presets for Claude Code, Codex, etc.
- Custom Dockerfiles and one-click image builds
- 10 themes and keyboard shortcuts
Social posts
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GTM channels
- Community
- Docs
ICP
- Software developers
- Engineering teams
- Startups
VendorHandler.dev