RTK Skill (Rust Token Killer)

RTK is a CLI proxy that filters and compresses command output before it reaches the LLM (typically 60–90% token savings).

Resolve the RTK command (read first)

Use conventional paths only — never machine-specific absolute paths like /Users/... or C:\Users\....

On Windows, tools deploy to %USERPROFILE%\.terrain\bin\ (also written as ~/.terrain/bin/ in Git Bash / PowerShell 7+). Binaries use .exe extensions; PATHEXT resolves rtk → rtk.exe.

Priority	Command prefix	When
1	`~/.terrain/bin/rtk`	Terrain env integration or desktop app (see existence check below)
2	`bunx @terrain-ai/rtk`	No Terrain install; needs network once
3	`npx @terrain-ai/rtk`	Same as bunx if Bun unavailable

Optional manifest (local, gitignored): .terrain/env/agent-tools.json — same ~/.terrain/bin/… conventions.

Existence check (cross-platform):

rtk-skill

RTK Skill (Rust Token Killer)

Resolve the RTK command (read first)