diff --git a/internal/room/tools/definitions.go b/internal/room/tools/definitions.go
new file mode 100644
index 0000000..5144a67
--- /dev/null
+++ b/internal/room/tools/definitions.go
@@ -0,0 +1,130 @@
+package tools
+
+import "github.com/sashabaranov/go-openai"
+
+var FileTools = []openai.Tool{
+	{
+		Type: openai.ToolTypeFunction,
+		Function: &openai.FunctionDefinition{
+			Name:        "glob",
+			Description: "模式匹配查找文件，支持 * ** ? 等通配符",
+			Parameters: `{
+				"type": "object",
+				"properties": {
+					"pattern": {
+						"type": "string",
+						"description": "glob 模式，如 **/*.go, *.ts"
+					}
+				},
+				"required": ["pattern"]
+			}`,
+		},
+	},
+	{
+		Type: openai.ToolTypeFunction,
+		Function: &openai.FunctionDefinition{
+			Name:        "grep",
+			Description: "在文件中搜索内容，支持正则表达式",
+			Parameters: `{
+				"type": "object",
+				"properties": {
+					"pattern": {
+						"type": "string",
+						"description": "正则表达式搜索模式"
+					},
+					"path": {
+						"type": "string",
+						"description": "搜索目录路径"
+					},
+					"include": {
+						"type": "string",
+						"description": "文件过滤，如 *.go, *.ts"
+					}
+				},
+				"required": ["pattern"]
+			}`,
+		},
+	},
+	{
+		Type: openai.ToolTypeFunction,
+		Function: &openai.FunctionDefinition{
+			Name:        "read_file",
+			Description: "读取文件内容，支持大文件分段读取",
+			Parameters: `{
+				"type": "object",
+				"properties": {
+					"filename": {
+						"type": "string",
+						"description": "文件名（相对于 workspace）"
+					},
+					"offset": {
+						"type": "integer",
+						"description": "起始行号（从 0 开始）"
+					},
+					"limit": {
+						"type": "integer",
+						"description": "读取行数，默认 100"
+					}
+				},
+				"required": ["filename"]
+			}`,
+		},
+	},
+	{
+		Type: openai.ToolTypeFunction,
+		Function: &openai.FunctionDefinition{
+			Name:        "edit_file",
+			Description: "编辑文件内容，使用字符串替换",
+			Parameters: `{
+				"type": "object",
+				"properties": {
+					"filename": {
+						"type": "string",
+						"description": "文件名（相对于 workspace）"
+					},
+					"old_string": {
+						"type": "string",
+						"description": "要替换的原始内容"
+					},
+					"new_string": {
+						"type": "string",
+						"description": "替换后的新内容"
+					}
+				},
+				"required": ["filename", "old_string", "new_string"]
+			}`,
+		},
+	},
+	{
+		Type: openai.ToolTypeFunction,
+		Function: &openai.FunctionDefinition{
+			Name:        "write_file",
+			Description: "写入或创建文件",
+			Parameters: `{
+				"type": "object",
+				"properties": {
+					"filename": {
+						"type": "string",
+						"description": "文件名（相对于 workspace）"
+					},
+					"content": {
+						"type": "string",
+						"description": "文件内容"
+					}
+				},
+				"required": ["filename", "content"]
+			}`,
+		},
+	},
+	{
+		Type: openai.ToolTypeFunction,
+		Function: &openai.FunctionDefinition{
+			Name:        "list_workspace",
+			Description: "列出工作区的所有文件",
+			Parameters: `{
+				"type": "object",
+				"properties": {}
+			}`,
+		},
+	},
+}