agentbox
AgentBox is an open-source command-line tool that runs multiple AI coding agents in parallel, each isolated in its own sandboxed environment. It supports local execution via Docker containers and cloud virtual machines through providers like Hetzner, Daytona, Vercel, and E2B. The tool is designed to enable efficient concurrent development, testing, and code review by spawning agents that do not interfere with each other. One of its standout features is sub-1-second checkpoint starts, allowing agents to save and resume state almost instantly, which dramatically reduces setup time for repetitive or long-running tasks. AgentBox integrates natively with popular coding assistants such as Claude Code and Codex, offering plugins that allow these tools to manage and interact with the sandboxed agents. The CLI provides commands to create, list, monitor, and destroy agent boxes, as well as to manage git operations and background queues. With a growing plugin ecosystem, AgentBox aims to be a central hub for orchestrating multiple AI-driven development workflows.
- Category
- AI Agents
- Pricing
- Open Source
Problem solved
Developers and teams using AI coding agents often need to run several agents simultaneously to handle different aspects of a project—such as parallel bug fixes, feature branches, or code reviews. Without proper orchestration, these agents can conflict, share state unexpectedly, or require cumbersome manual environment setup. AgentBox solves this by providing instant, isolated sandboxes for each agent, enabling true parallel execution with no cross-contamination. Its checkpointing feature further eliminates wait times between sessions, making rapid iteration and agent collaboration seamless.
Use cases
- Running multiple instances of Claude Code in parallel to independently fix different bugs in a large codebase.
- Spinning up throwaway sandboxes for AI agents to test experimental code changes without risking the host system.
- Using checkpointing to save agent progress on a complex refactoring task and resume instantly across sessions.
- Integrating into CI/CD pipelines to execute AI-driven code reviews in isolated environments for every pull request.
- Iterating quickly on AI agent plugins with fast checkpoint restores, accelerating plugin development and testing.
Audience
- Developers
- ML Engineers
- Data Scientists
- Hobbyists
- Researchers
Pros
- Sub-1-second checkpoint starts enable near-instant agent restores.
- Truly parallel execution in isolated sandboxes prevents conflicts.
- Supports multiple backends (local Docker and multiple cloud providers).
- Open source with adaptable architecture and plugin system.
- Seamless integration with popular AI coding agents via plugins.
Cons
- Requires Docker or cloud provider accounts and initial configuration.
- Limited documentation and small community at early stage.
- May introduce overhead for simple single-agent tasks.
Official website: https://github.com/madarco/agentbox
Canonical LambdaBase page: https://www.lambdabase.com/tools/agentbox