{
  "method": "sessionUpdate",
  "args": [
    {
      "sessionId": "test-session-id",
      "update": {
        "sessionUpdate": "tool_call",
        "toolCallId": "command-read-file",
        "status": "in_progress",
        "kind": "read",
        "title": "Read file '/test/project/src/index.ts'",
        "locations": [
          {
            "path": "/test/project/src/index.ts"
          }
        ]
      }
    }
  ]
}