diff --git a/extensions/oc-path/src/oc-path/edit.ts b/extensions/oc-path/src/oc-path/edit.ts
index 402ea77b45cb..c1327154b464 100644
--- a/extensions/oc-path/src/oc-path/edit.ts
+++ b/extensions/oc-path/src/oc-path/edit.ts
@@ -10,6 +10,7 @@
  */
 
 import type { AstBlock, AstItem, FrontmatterEntry, MdAst } from "./ast.js";
+import { formatFrontmatterValue } from "./frontmatter-format.js";
 import { formatOcPath, type OcPath } from "./oc-path.js";
 import { guardSentinel } from "./sentinel.js";
 
@@ -139,13 +140,3 @@ function finalize(ast: MdAst): MdEditResult {
   }
   return { ok: true, ast: { ...ast, raw: parts.join("\n") } };
 }
-
-function formatFrontmatterValue(value: string): string {
-  if (value.length === 0) {
-    return '""';
-  }
-  if (/[:#&*?|<>=!%@`,[\]{}\r\n]/.test(value)) {
-    return JSON.stringify(value);
-  }
-  return value;
-}
diff --git a/extensions/oc-path/src/oc-path/emit.ts b/extensions/oc-path/src/oc-path/emit.ts
index 96ca60016417..c322afd0ddb9 100644
--- a/extensions/oc-path/src/oc-path/emit.ts
+++ b/extensions/oc-path/src/oc-path/emit.ts
@@ -23,6 +23,7 @@
  */
 
 import type { MdAst } from "./ast.js";
+import { formatFrontmatterValue } from "./frontmatter-format.js";
 import { guardSentinel } from "./sentinel.js";
 
 /**
@@ -114,16 +115,5 @@ export function emitMd(ast: MdAst, opts: EmitOptions = {}): string {
   return parts.join("\n");
 }
 
-function formatFrontmatterValue(value: string): string {
-  // Frontmatter is yaml-ish; quote values with structural chars.
-  if (value.length === 0) {
-    return '""';
-  }
-  if (/[:#&*?|<>=!%@`,[\]{}\r\n]/.test(value)) {
-    return JSON.stringify(value);
-  }
-  return value;
-}
-
 // Re-export the frontmatter type for convenience so tests don't need
 // to import from ast.ts.
diff --git a/extensions/oc-path/src/oc-path/frontmatter-format.ts b/extensions/oc-path/src/oc-path/frontmatter-format.ts
new file mode 100644
index 000000000000..c083608241eb
--- /dev/null
+++ b/extensions/oc-path/src/oc-path/frontmatter-format.ts
@@ -0,0 +1,10 @@
+export function formatFrontmatterValue(value: string): string {
+  // Frontmatter is yaml-ish; quote values with structural chars.
+  if (value.length === 0) {
+    return '""';
+  }
+  if (/[:#&*?|<>=!%@`,[\]{}\r\n]/.test(value)) {
+    return JSON.stringify(value);
+  }
+  return value;
+}
diff --git a/extensions/oc-path/src/oc-path/universal.ts b/extensions/oc-path/src/oc-path/universal.ts
index c54053d510a6..326ae2b37f64 100644
--- a/extensions/oc-path/src/oc-path/universal.ts
+++ b/extensions/oc-path/src/oc-path/universal.ts
@@ -19,6 +19,7 @@ import { expectDefined } from "openclaw/plugin-sdk/expect-runtime";
 import { isMap, isScalar, isSeq, type Pair } from "yaml";
 import type { MdAst } from "./ast.js";
 import { setMdOcPath } from "./edit.js";
+import { formatFrontmatterValue } from "./frontmatter-format.js";
 import type { JsoncAst, JsoncEntry, JsoncValue } from "./jsonc/ast.js";
 import { insertJsoncOcPath, setJsoncOcPath } from "./jsonc/edit.js";
 import { resolveJsoncOcPath } from "./jsonc/resolve.js";
@@ -873,16 +874,6 @@ function rebuildMdRaw(ast: MdAst): MdAst {
   return { ...ast, raw: parts.join("\n") };
 }
 
-function formatFrontmatterValue(value: string): string {
-  if (value.length === 0) {
-    return '""';
-  }
-  if (/[:#&*?|<>=!%@`,[\]{}\r\n]/.test(value)) {
-    return JSON.stringify(value);
-  }
-  return value;
-}
-
 function slugifyHeading(s: string): string {
   return s
     .toLowerCase()