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Free, local plugin that keeps tool output out of your coding agent's context window. Sandbox and SQLite FTS5 search, 99% fewer bytes in context. Works with Claude Code, Codex, Pi, OpenCode, Gemini CLI, Copilot CLI and 4 more agents. Zero telemetry.
Orchestrate sandboxed coding agents in TypeScript with sandcastle.run()
Development environments for coding agents. Enable multiple agents to work safely and independently with your preferred stack.
✨ The open-source multi-agent platform. Every agent gets its own computer, desktop, network, and long-term memory. You can bring your own key, or host your coding agent like Claude Code, Codex and so on.
Cloud agents for any harness. Claude Code, Codex, Pi, and OpenCode run in isolated sandboxes, and live sessions move between your Mac and the cloud.
Cross-Platform Micro-VM Sandbox for Agentic Workloads
Give the agent a machine. Just not yours. Each AI coding agent gets its own isolated machine with root, Docker, and systemd - active defense detects and stops threats automatically.
Local-first, open-source security gateway for AI coding agents. Enforce tool-call policies, detect secrets, and audit actions on-device.
One VM for every project. An isolated sandbox with your project’s toolchain, ready for you or a coding agent to start coding
Open source autonomous engineering harness in your cloud. One sandbox per task, no real secrets inside.
A privacy-first local coding agent that consults frontier AI models without exposing your source code.
CLI tool for running coding agents inside hardware-isolated microVMs
Sandboxed devcontainer for running Claude Code, Codex, and OpenCode in bypass / auto-approve mode.
Give the agent a cage, not your keys. One-command Docker sandbox for AI coding agents: full autonomous permissions, per-project isolation, your host stays untouched.