cache-keepalive

{
  "name": "cache-keepalive",
  "version": "0.1.1",
  "description": "Keep Claude Code's 5-minute prompt cache warm across idle pauses by injecting cheap keepalive turns from a Stop hook. Saves real money on API-billed sessions with normal thinking gaps.",
  "author": {
    "name": "yujiachen-y"
  },
  "homepage": "https://github.com/yujiachen-y/claude-code-cache-keepalive",
  "repository": "https://github.com/yujiachen-y/claude-code-cache-keepalive",
  "license": "MIT",
  "keywords": [
    "cache",
    "prompt-cache",
    "keepalive",
    "ttl",
    "cost-optimization",
    "hooks"
  ],
  "userConfig": {
    "interval_seconds": {
      "type": "number",
      "title": "Keepalive interval (seconds)",
      "description": "Seconds the Stop hook sleeps before injecting a keepalive ping. Claude Code's prompt cache TTL is 300s (5 min); 240 leaves a 60s safety margin.",
      "default": 240,
      "min": 30,
      "max": 290,
      "required": false,
      "sensitive": false
    },
    "keepalive_message": {
      "type": "string",
      "title": "Keepalive message",
      "description": "Text injected as a user-side keepalive turn. Keep it bland so Claude replies cheaply without starting tools or generating long output.",
      "default": "got it, i need some time to think about the next move",
      "required": false,
      "sensitive": false
    },
    "max_loops_per_turn": {
      "type": "number",
      "title": "Max keepalive loops per turn",
      "description": "Max consecutive keepalive cycles per idle turn before giving up. At interval=240 and max=7, one idle turn keeps the cache warm for ~28 minutes.",
      "default": 7,
      "min": 1,
      "max": 60,
      "required": false,
      "sensitive": false
    }
  }
}