Constant READ_FILE_TOOL_SCHEMA 

pub const READ_FILE_TOOL_SCHEMA: &str = r#"{
    "type": "object",
    "properties": {
        "file_path": {
            "type": "string",
            "description": "The absolute path to the file to read"
        },
        "offset": {
            "type": "integer",
            "description": "The line number to start reading from (0-based). Defaults to 0."
        },
        "limit": {
            "type": "integer",
            "description": "The maximum number of lines to read. Defaults to 2000."
        }
    },
    "required": ["file_path"]
}"#;

ReadFile tool JSON schema constant.