diff --git a/pkg/cli/functions.go b/pkg/cli/functions.go
index d193262..3654b68 100644
--- a/pkg/cli/functions.go
+++ b/pkg/cli/functions.go
@@ -35,11 +35,8 @@ type AvailableTool struct {
 	Impl func(arguments map[string]interface{}) (string, error)
 }
 
-var AvailableTools = map[string]AvailableTool{
-	"read_dir": {
-		Tool: openai.Tool{Type: "function", Function: openai.FunctionDefinition{
-			Name: "read_dir",
-			Description: `Return the contents of the CWD (current working directory).
+const (
+	READ_DIR_DESCRIPTION = `Return the contents of the CWD (current working directory).
 
 Results are returned as JSON in the following format:
 {
@@ -53,7 +50,52 @@ Results are returned as JSON in the following format:
 }
 
 For files, size represents the size (in bytes) of the file.
-For directories, size represents the number of entries in that directory.`,
+For directories, size represents the number of entries in that directory.`
+
+	READ_FILE_DESCRIPTION = `Read the contents of a text file relative to the current working directory.
+
+Each line of the file is prefixed with its line number and a tabs (\t) to make
+it make it easier to see which lines to change for other modifications.
+
+Example:
+{
+	"message": "success", // if successful, or a different message indicating failure
+	"result": "1\tthe contents\n2\tof the file\n"
+}`
+
+	WRITE_FILE_DESCRIPTION = `Write the provided contents to a file relative to the current working directory.
+
+Result is returned as JSON in the following format:
+{
+	"message": "success", // if successful, or a different message indicating failure
+}`
+
+	MODIFY_FILE_DESCRIPTION = `Perform complex line-based modifications to a file.
+
+Line ranges are inclusive. If 'start_line' is specified but 'end_line' is not,
+'end_line' gets set to the last line of the file.
+
+To replace or remove a single line, *set start_line and end_line to the same value*
+
+Examples:
+* Insert the lines "hello<new line>world" at line 10, preserving other content:
+    {"path": "myfile", "operation": "insert_before", "start_line": 10, "content": "hello\nworld"}
+
+* Remove lines 45 up to and including 54:
+    {"path": "myfile", "operation": "remove", "start_line": 45, "end_line": 54}
+
+* Replace content from line 10 to 25:
+    {"path": "myfile", "operation": "replace", "start_line": 10, "end_line": 25, "content": "i\nwas\nhere"}
+
+* Replace contents of entire the file:
+    {"path": "myfile", "operation": "replace", "start_line": 0, "content": "i\nwas\nhere"}`
+)
+
+var AvailableTools = map[string]AvailableTool{
+	"read_dir": {
+		Tool: openai.Tool{Type: "function", Function: openai.FunctionDefinition{
+			Name:        "read_dir",
+			Description: READ_DIR_DESCRIPTION,
 			Parameters: FunctionParameters{
 				Type: "object",
 				Properties: map[string]FunctionParameter{
@@ -78,17 +120,8 @@ For directories, size represents the number of entries in that directory.`,
 	},
 	"read_file": {
 		Tool: openai.Tool{Type: "function", Function: openai.FunctionDefinition{
-			Name: "read_file",
-			Description: `Read the contents of a text file relative to the current working directory.
-
-Each line of the file is prefixed with its line number and a tabs (\t) to make
-it make it easier to see which lines to change for other modifications.
-
-Example:
-{
-	"message": "success", // if successful, or a different message indicating failure
-	"result": "1\tthe contents\n2\tof the file\n"
-}`,
+			Name:        "read_file",
+			Description: READ_FILE_DESCRIPTION,
 			Parameters: FunctionParameters{
 				Type: "object",
 				Properties: map[string]FunctionParameter{
@@ -114,13 +147,8 @@ Example:
 	},
 	"write_file": {
 		Tool: openai.Tool{Type: "function", Function: openai.FunctionDefinition{
-			Name: "write_file",
-			Description: `Write the provided contents to a file relative to the current working directory.
-
-Result is returned as JSON in the following format:
-{
-	"message": "success", // if successful, or a different message indicating failure
-}`,
+			Name:        "write_file",
+			Description: WRITE_FILE_DESCRIPTION,
 			Parameters: FunctionParameters{
 				Type: "object",
 				Properties: map[string]FunctionParameter{
@@ -158,26 +186,8 @@ Result is returned as JSON in the following format:
 	},
 	"modify_file": {
 		Tool: openai.Tool{Type: "function", Function: openai.FunctionDefinition{
-			Name: "modify_file",
-			Description: `Perform complex line-based modifications to a file.
-
-Line ranges are inclusive. If 'start_line' is specified but 'end_line' is not,
-'end_line' gets set to the last line of the file.
-
-To replace or remove a single line, *set start_line and end_line to the same value*
-
-Examples:
-* Insert the lines "hello<new line>world" at line 10, preserving other content:
-    {"path": "myfile", "operation": "insert_before", "start_line": 10, "content": "hello\nworld"}
-
-* Remove lines 45 up to and including 54:
-    {"path": "myfile", "operation": "remove", "start_line": 45, "end_line": 54}
-
-* Replace content from line 10 to 25:
-    {"path": "myfile", "operation": "replace", "start_line": 10, "end_line": 25, "content": "i\nwas\nhere"}
-
-* Replace contents of entire the file:
-    {"path": "myfile", "operation": "replace", "start_line": 0, "content": "i\nwas\nhere"}`,
+			Name:        "modify_file",
+			Description: MODIFY_FILE_DESCRIPTION,
 			Parameters: FunctionParameters{
 				Type: "object",
 				Properties: map[string]FunctionParameter{