Default Codex to JSON style tool calls

.changeset/wicked-cherries-think.md

@@ -0,0 +1,5 @@
+---
+"kilo-code": patch
+---
+
+Default GPT 5.x Codex to JSON style tool calls

packages/types/src/kilocode/native-function-calling.ts

@@ -27,7 +27,14 @@ export const nativeFunctionCallingProviders = [
 	"moonshot",
 ] satisfies ProviderName[] as ProviderName[]
 
-const modelsDefaultingToJsonKeywords = ["claude-haiku-4.5", "claude-haiku-4-5", "minimax-m2"]
+const modelsDefaultingToJsonKeywords = [
+	"claude-haiku-4.5",
+	"claude-haiku-4-5",
+	"gpt-5-codex",
+	"gpt-5.1-codex",
+	"minimax-m2",
+]
+
 //Specific providers that default to JSON tool use, regardless of model.
 const providersDefaultingToJsonKeywords = [
 	"synthetic", //All synthetic models support JSON tools, and their pricing model strongly encourages their use

webview-ui/src/i18n/locales/en/kilocode.json

@@ -219,7 +219,7 @@
 		"description": "Choose how tool calls are formatted in the system prompt. JSON is currently experimental and mostly intended for users interested in contributing to its development.",
 		"automatic": "Let Kilo decide",
 		"xml": "XML",
-		"json": "JSON (experimental)"
+		"json": "JSON"
 	},
 	"ghost": {
 		"title": "Autocomplete",