{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "SnapshotParams",
  "description": "Parameters for `tool.snapshot` — produce an indented accessibility tree for one tab plus a fresh `@e<N>` ref-store on the extension side (design §4 / §7).",
  "type": "object",
  "required": [
    "session_id"
  ],
  "properties": {
    "max_depth": {
      "description": "Cap the depth of the rendered tree (defense against very deep pages). Implementation-defined default; agents typically use `Some(16)` for \"browse and read\" prompts.",
      "type": [
        "integer",
        "null"
      ],
      "format": "uint32",
      "minimum": 0.0
    },
    "max_tokens": {
      "description": "Soft cap on rendered tokens (approximate; extension uses a best-effort heuristic based on character count).",
      "type": [
        "integer",
        "null"
      ],
      "format": "uint32",
      "minimum": 0.0
    },
    "session_id": {
      "type": "string"
    },
    "tab_id": {
      "description": "Optional target tab. Defaults to the Agent Window's currently active tab.",
      "type": [
        "integer",
        "null"
      ],
      "format": "int64"
    }
  }
}