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Get Started Free →Headroom startup hooks for Claude Code and GitHub Copilot CLI. Ensures the local Headroom runtime (token compression proxy) is available at session start and before shell/PowerShell tool use. Runs headroom init hook ensure with a 15-second timeout.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-01 | ✗→✓ | ▲ Improved | -62% | 0% |
| case-02 | ✗→✓ | ▲ Improved | -24% | 0% |
| case-03 | ✗→✓ | ▲ Improved | -47% | 0% |
| case-06 | ✗→✓ | ▲ Improved | -80% | 0% |
| case-07 | ✗→✓ | ▲ Improved | -75% | 0% |
Lightweight startup hooks that ensure the Headroom runtime is available for Claude Code and GitHub Copilot CLI sessions.
| Hook | Matcher | Command | Timeout | |------|---------|---------|---------| | SessionStart | startup, resume | headroom init hook ensure | 15s | | PreToolUse | Bash, PowerShell | headroom init hook ensure | 15s |
The headroom init hook ensure command checks for a matching durable headroom init deployment and starts it if needed. This ensures the Headroom compression proxy is running before any API calls are made.
headroom-ai package installed (uv tool install "headroom-ai[all]" or pip install "headroom-ai[all]")headroom init)Other measured skills in the registry, with their headline benchmark lift.