Scale background coding agents
Run multiple background coding agents at the same time with zero runtime conflicts from other agents working in parallel.
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curl -fsSL https://bastion.computer/install.sh | bashRun agent environments in isolation
Every coding agent runs in a separate VM, giving agents complete control of its dev environment from file systems to background processes.
Define environments as JSON
All Bastion environments are initialized with schema validated JSON templates rather than manually configured.
Self-host on your infrastructure
Run Bastion on Linux systems with KVM support, from a local workstation to cloud instances like AWS EC2.
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Define your agent’s environment with JSON configuration.
template.json {"agents": {"opencode": {"working_directory": "/workspace/acme-app","auth": {"openai": {"type": "api","key": "${{ env.OPENAI_API_KEY }}"}},"config": {"model": "openai/gpt-5.5","permission": "allow"}}},"actions": {"init": [{"use": "setup_bun"},{"run": "git clone https://github.com/.../acme-app.git","working_directory": "/workspace"},{"run": "bun install","working_directory": "/workspace/acme-app"}],"start": [{"run": "nohup bun run dev &","working_directory": "/workspace/acme-app"}]}} -
Initialize the template.
Terminal window bastion templates create --key acme-app --file ./template.json# {# "id": "tpl_123",# "key": "acme-app",# "createdAt": "..."# } -
Deploy your agent.
Terminal window bastion env create --template-key acme-app --key agent-1 --tag issue-32# {# "id": "env_abc",# "key": "agent-1",# "status": "running",# "templateId": "tpl_123",# "tags": ["issue-32"],# "createdAt": "...",# "updatedAt": "..."# } -
Interface directly via OpenCode or SSH.
Terminal window bastion opencode --key agent-1Terminal window bastion ssh --key agent-1