diff --git a/pkg/cli/functions.go b/pkg/cli/functions.go
index b4b68da..ef688fd 100644
--- a/pkg/cli/functions.go
+++ b/pkg/cli/functions.go
@@ -72,9 +72,7 @@ Result is returned as JSON in the following format:
 
 	FILE_INSERT_LINES = `Insert lines into a file.`
 
-	FILE_REPLACE_LINES = `Replace an (inclusive) range of lines within a file.`
-
-	FILE_REMOVE_LINES = `Remove an (inclusive) range of lines from a file.`
+	FILE_REPLACE_LINES = `Replace or remove a range of lines within a file.`
 )
 
 var AvailableTools = map[string]AvailableTool{
@@ -235,18 +233,18 @@ var AvailableTools = map[string]AvailableTool{
 					},
 					"start_line": {
 						Type:        "integer",
-						Description: `Line number which specifies the start of the replacement range (inclusive, this line will be replaced)`,
+						Description: `Line number which specifies the start of the replacement range (inclusive).`,
 					},
 					"end_line": {
 						Type:        "integer",
-						Description: `Line number which specifies the end of the replacement range (inclusive, this line will be replaced). If unset, will be set to the end of the file.`,
+						Description: `Line number which specifies the end of the replacement range (inclusive). If unset, range extends to end of file.`,
 					},
 					"content": {
 						Type:        "string",
-						Description: `Content which will replace specified range.`,
+						Description: `Content to replace specified range. Omit to remove the specified range.`,
 					},
 				},
-				Required: []string{"path", "start_line", "content"},
+				Required: []string{"path", "start_line"},
 			},
 		}},
 		Impl: func(args map[string]interface{}) (string, error) {
@@ -288,60 +286,6 @@ var AvailableTools = map[string]AvailableTool{
 			return FileReplaceLines(path, start_line, end_line, content), nil
 		},
 	},
-	"file_remove_lines": {
-		Tool: openai.Tool{Type: "function", Function: openai.FunctionDefinition{
-			Name:        "file_remove_lines",
-			Description: FILE_REMOVE_LINES,
-			Parameters: FunctionParameters{
-				Type: "object",
-				Properties: map[string]FunctionParameter{
-					"path": {
-						Type:        "string",
-						Description: "Path of the file to be modified, relative to the current working directory.",
-					},
-					"start_line": {
-						Type:        "integer",
-						Description: `Line number which specifies the start of the removal range (inclusive, this line will be removed)`,
-					},
-					"end_line": {
-						Type:        "integer",
-						Description: `Line number which specifies the end of the removal range (inclusive, this line will be removed).`,
-					},
-				},
-				Required: []string{"path", "start_line", "end_line"},
-			},
-		}},
-		Impl: func(args map[string]interface{}) (string, error) {
-			tmp, ok := args["path"]
-			if !ok {
-				return "", fmt.Errorf("path parameter to write_file was not included.")
-			}
-			path, ok := tmp.(string)
-			if !ok {
-				return "", fmt.Errorf("Invalid path in function arguments: %v", tmp)
-			}
-			var start_line int
-			tmp, ok = args["start_line"]
-			if ok {
-				tmp, ok := tmp.(float64)
-				if !ok {
-					return "", fmt.Errorf("Invalid start_line in function arguments: %v", tmp)
-				}
-				start_line = int(tmp)
-			}
-			var end_line int
-			tmp, ok = args["end_line"]
-			if ok {
-				tmp, ok := tmp.(float64)
-				if !ok {
-					return "", fmt.Errorf("Invalid end_line in function arguments: %v", tmp)
-				}
-				end_line = int(tmp)
-			}
-
-			return FileRemoveLines(path, start_line, end_line), nil
-		},
-	},
 }
 
 func resultToJson(result FunctionResult) string {
@@ -626,44 +570,3 @@ func FileReplaceLines(path string, startLine int, endLine int, content string) s
 	return resultToJson(FunctionResult{Result: newContent})
 
 }
-
-func FileRemoveLines(path string, startLine int, endLine int) string {
-	ok, res := isPathWithinCWD(path)
-	if !ok {
-		return resultToJson(*res)
-	}
-
-	// Read the existing file's content
-	data, err := os.ReadFile(path)
-	if err != nil {
-		if !os.IsNotExist(err) {
-			return resultToJson(FunctionResult{Message: fmt.Sprintf("Could not read path: %s", err.Error())})
-		}
-		_, err = os.Create(path)
-		if err != nil {
-			return resultToJson(FunctionResult{Message: fmt.Sprintf("Could not create new file: %s", err.Error())})
-		}
-		data = []byte{}
-	}
-
-	if startLine < 1 {
-		return resultToJson(FunctionResult{Message: "start_line cannot be less than 1"})
-	}
-
-	lines := strings.Split(string(data), "\n")
-
-	if endLine == 0 || endLine > len(lines) {
-		endLine = len(lines)
-	}
-
-	lines = append(lines[:startLine-1], lines[endLine:]...)
-	newContent := strings.Join(lines, "\n")
-
-	// Join the lines and write back to the file
-	err = os.WriteFile(path, []byte(newContent), 0644)
-	if err != nil {
-		return resultToJson(FunctionResult{Message: fmt.Sprintf("Could not write to path: %s", err.Error())})
-	}
-
-	return resultToJson(FunctionResult{Result: newContent})
-}