{
  "name": "timer_cancel",
  "presets": {
    "processes": [
      {
        "name": "echoer",
        "argv": ["sh", "-lc", "while read line; do echo \"saw:$line\"; done"]
      }
    ]
  },
  "trust": ["echoer"],
  "steps": [
    {
      "type": "mcp_call",
      "method": "spawn_process",
      "params": {"kind": "command", "preset": "echoer", "name": "echoer"},
      "save_as": "proc"
    },
    { "type": "wait_stable", "timeout_ms": 1500 },
    {
      "type": "mcp_call",
      "method": "timer_set",
      "params": {"seconds": 1, "body": "should-not-arrive", "owner_process_id": "{{proc.process_id}}"},
      "save_as": "tmr"
    },
    {
      "type": "mcp_call",
      "method": "timer_cancel",
      "params": {"timer_id": "{{tmr.timer_id}}"}
    },
    {
      "type": "mcp_call",
      "method": "timer_list",
      "params": {"owner_process_id": "{{proc.process_id}}"},
      "save_as": "listed"
    },
    {
      "type": "assert_saved",
      "from": "listed",
      "path": "",
      "equals": []
    }
  ]
}