kei-ping

Cross-window agent presence (heartbeat / list / watch). Auto-selects backend: Redis if redis-cli ping == PONG on localhost, else SQLite.

tagline	Cross-window agent presence (heartbeat / list / watch). Auto-selects backend: Re
language	Rust

# install single binary
$ curl -fsSL keiseikit.dev/primitives/kei-ping/install.sh | bash

# after install
$ kei-ping --help

# settings.json snippet
"hooks": {
  "PostToolUse": [
    { "match": "Edit|Write",
      "hooks": ["~/.claude/hooks/kei-ping.sh"] }
  ]
}

other primitives

Rust primitive in the KeiSeiKit substrate.

Longitudinal user-frustration matrix — regex-based chatlog scan (no ML)

Agent substrate v1 — Capability trait + registry + compose/spawn/verify runtime