What problem does it solve? Agent containers running Claude Code consume large numbers of tokens on verbose dev command output (git, cargo, pytest, docker, kubectl). This Skill installs the rtk CLI proxy on the host and wires it into agent containers so every Bash tool call is automatically filtered through rtk, reducing token usage by 60–90% without changing agent instructions. ## Core Features & Use Cases - Host installation: Downloads the rtk binary to ~/.local/bin/rtk and verifies it is executable. - Container integration: Mounts the binary read-only at /usr/local/bin/rtk by updating the additional_mounts JSON column in the container_configs database table. - Automatic hook wiring: Adds a PreToolUse Bash hook (rtk hook claude) to each agent group's settings.json using jq, idempotently replacing any existing rtk hook. - Use Case: An operator running multiple NanoClaw agent groups wants to cut token costs on git and docker commands; they run this Skill per group, restart the containers, and verify savings with rtk gain. ## Quick Start Ask the agent to install rtk into a specific agent group by providing the group ID from ncl groups list and letting it run the install, mount, hook, and restart steps.