diff --git a/.oxfmtrc.jsonc b/.oxfmtrc.jsonc
index 221e1cd7172..bd8b39bc11a 100644
--- a/.oxfmtrc.jsonc
+++ b/.oxfmtrc.jsonc
@@ -1,5 +1,20 @@
 {
   "$schema": "./node_modules/oxfmt/configuration_schema.json",
+  "arrowParens": "always",
+  "bracketSameLine": false,
+  "bracketSpacing": true,
+  "embeddedLanguageFormatting": "auto",
+  "endOfLine": "lf",
+  "htmlWhitespaceSensitivity": "css",
+  "insertFinalNewline": true,
+  "jsxSingleQuote": false,
+  "objectWrap": "preserve",
+  "printWidth": 100,
+  "proseWrap": "preserve",
+  "quoteProps": "as-needed",
+  "semi": true,
+  "singleAttributePerLine": false,
+  "singleQuote": false,
   "sortImports": {
     "newlinesBetween": false,
   },
@@ -7,6 +22,7 @@
     "sortScripts": true,
   },
   "tabWidth": 2,
+  "trailingComma": "all",
   "useTabs": false,
   "ignorePatterns": [
     "apps/",
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11b00962c34..b48881f622d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Docs: https://docs.openclaw.ai
 
 ### Changes
 
+- Build: pin explicit oxfmt defaults in the shared formatter config to keep formatting behavior stable across upgrades.
 - TypeScript: enable stricter compiler checks for implicit returns, side-effect imports, overrides, and unused production code.
 - Build: upgrade workspace package management to pnpm 11 and keep Docker, install, update, and release workflows on the pnpm 11 config surface. (#79414) Thanks @altaywtf.
 - Models: add provider-level `localService` startup for on-demand local model servers before OpenAI-compatible requests, including one-shot model probes.