Coding agents preinstalled in every Agent Sandbox

Ask a Runtype agent to write and run code in a sandbox and it now has three coding agents ready on the PATH:

• opencode, pi, and fx are preinstalled, so agents can choose the coding environment that fits the task.
• Managed inference is available without adding a provider key or configuring another service.
• Supported models can be selected with --model when a task needs a different balance of speed and capability.
• The tools run with sandbox-friendly defaults and require no interactive setup.

New: fx. fx, Vercel Labs' native coding agent, joins opencode and pi as another ready-to-run option. Launch it with fx and it uses the same managed model access as the rest of the sandbox.

Gateway-provided web search is not available in the sandbox, so unsupported requests fail clearly instead of returning an empty result.