agents / pi

Stonewall for Pi Coding Agent

Stonewall runs Pi Coding Agent inside a kernel-enforced sandbox. The agent only sees your project directory and the few binaries and paths the policy names. Everything else on your machine, from ~/.ssh to your browser profile, is invisible to it, no matter what a prompt says.

Policy

For Pi Coding Agent, stonewall.sh provides a specific policy at https://stonewall.sh/policies/pi.yml. You can use it by simply including it in your .stonewall.yml config, or using the CLI:

stonewall policy include https://stonewall.sh/policies/pi.yml

It covers only what Pi Coding Agent needs to start and authenticate:

• Binaries: pi and node (the runtime).
• Writable paths: ~/.pi/agent, where settings, auth.json, sessions, extensions and installed packages live.

It intentionally does not allow sh, bash, git or any other tool the agent could use to run arbitrary programs.

Related Policies

The Pi Coding Agent policy is meant to be combined with policies for what your project actually needs:

• base.yml: read-only file inspection (cat, grep, ls, …), hides .env and secrets.
• git-safe.yml: read-only git, no commits, no credentials.
• git-unsafe.yml: full git, including commits and push.
• A language policy for builds and tests, e.g. go.yml, python.yml or typescript.yml.

Usage

Start the agent through stonewall instead of directly:

stonewall pi

Or alias it in your bash / zsh profile:

alias pi="stonewall pi"