diff --git a/extensions/acpx/src/config.ts b/extensions/acpx/src/config.ts
index 87cc96d7540..49f1e511113 100644
--- a/extensions/acpx/src/config.ts
+++ b/extensions/acpx/src/config.ts
@@ -1,8 +1,8 @@
 import fs from "node:fs";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
+import { formatPluginConfigIssue } from "openclaw/plugin-sdk/extension-shared";
 import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
-import type { z } from "openclaw/plugin-sdk/zod";
 import { AcpxPluginConfigSchema, DEFAULT_ACPX_TIMEOUT_SECONDS } from "./config-schema.js";
 import type {
   AcpxPluginConfig,
@@ -112,26 +112,13 @@ type ParseResult =
   | { ok: true; value: AcpxPluginConfig | undefined }
   | { ok: false; message: string };
 
-function formatAcpxConfigIssue(issue: z.ZodIssue | undefined): string {
-  if (!issue) {
-    return "invalid config";
-  }
-  if (issue.code === "unrecognized_keys" && issue.keys.length > 0) {
-    return `unknown config key: ${issue.keys[0]}`;
-  }
-  if (issue.code === "invalid_type" && issue.path.length === 0) {
-    return "expected config object";
-  }
-  return issue.message;
-}
-
 function parseAcpxPluginConfig(value: unknown): ParseResult {
   if (value === undefined) {
     return { ok: true, value: undefined };
   }
   const parsed = AcpxPluginConfigSchema.safeParse(value);
   if (!parsed.success) {
-    return { ok: false, message: formatAcpxConfigIssue(parsed.error.issues[0]) };
+    return { ok: false, message: formatPluginConfigIssue(parsed.error.issues[0]) };
   }
   return {
     ok: true,
diff --git a/extensions/diffs/src/config.ts b/extensions/diffs/src/config.ts
index 8fe2fd1f2b9..a238b8d0f2d 100644
--- a/extensions/diffs/src/config.ts
+++ b/extensions/diffs/src/config.ts
@@ -1,3 +1,4 @@
+import { mapPluginConfigIssues } from "openclaw/plugin-sdk/extension-shared";
 import { buildPluginConfigSchema } from "openclaw/plugin-sdk/plugin-entry";
 import { z } from "openclaw/plugin-sdk/zod";
 import type { OpenClawPluginConfigSchema } from "../api.js";
@@ -180,13 +181,7 @@ const diffsPluginConfigSchemaBase = buildPluginConfigSchema(DiffsPluginJsonSchem
     return {
       success: false,
       error: {
-        issues: result.error.issues.map((issue) => ({
-          path: issue.path.filter((segment): segment is string | number => {
-            const kind = typeof segment;
-            return kind === "string" || kind === "number";
-          }),
-          message: issue.message,
-        })),
+        issues: mapPluginConfigIssues(result.error.issues),
       },
     };
   },
diff --git a/extensions/memory-wiki/src/config.ts b/extensions/memory-wiki/src/config.ts
index a15dcf8c6f4..3d5caf5ee0f 100644
--- a/extensions/memory-wiki/src/config.ts
+++ b/extensions/memory-wiki/src/config.ts
@@ -1,5 +1,6 @@
 import os from "node:os";
 import path from "node:path";
+import { mapPluginConfigIssues } from "openclaw/plugin-sdk/extension-shared";
 import { buildPluginConfigSchema, z, type OpenClawPluginConfigSchema } from "../api.js";
 
 export const WIKI_VAULT_MODES = ["isolated", "bridge", "unsafe-local"] as const;
@@ -174,13 +175,7 @@ const memoryWikiConfigSchemaBase = buildPluginConfigSchema(MemoryWikiConfigSourc
     return {
       success: false,
       error: {
-        issues: result.error.issues.map((issue) => ({
-          path: issue.path.filter((segment): segment is string | number => {
-            const kind = typeof segment;
-            return kind === "string" || kind === "number";
-          }),
-          message: issue.message,
-        })),
+        issues: mapPluginConfigIssues(result.error.issues),
       },
     };
   },
diff --git a/extensions/openshell/src/config.ts b/extensions/openshell/src/config.ts
index 8366574d897..c946b0f0823 100644
--- a/extensions/openshell/src/config.ts
+++ b/extensions/openshell/src/config.ts
@@ -1,5 +1,9 @@
 import path from "node:path";
 import { buildPluginConfigSchema, type OpenClawPluginConfigSchema } from "openclaw/plugin-sdk/core";
+import {
+  formatPluginConfigIssue,
+  mapPluginConfigIssues,
+} from "openclaw/plugin-sdk/extension-shared";
 import { z } from "openclaw/plugin-sdk/zod";
 
 export type OpenShellPluginConfig = {
@@ -91,19 +95,6 @@ const OpenShellPluginConfigSchema = z.strictObject({
     .optional(),
 });
 
-function formatOpenShellConfigIssue(issue: z.ZodIssue | undefined): string {
-  if (!issue) {
-    return "invalid config";
-  }
-  if (issue.code === "unrecognized_keys" && issue.keys.length > 0) {
-    return `unknown config key: ${issue.keys[0]}`;
-  }
-  if (issue.code === "invalid_type" && issue.path.length === 0) {
-    return "expected config object";
-  }
-  return issue.message;
-}
-
 function isManagedOpenShellRemotePath(value: string): boolean {
   return OPEN_SHELL_MANAGED_REMOTE_ROOTS.some(
     (root) => value === root || value.startsWith(`${root}/`),
@@ -141,13 +132,7 @@ export function createOpenShellPluginConfigSchema(): OpenClawPluginConfigSchema
       return {
         success: false,
         error: {
-          issues: parsed.error.issues.map((issue) => ({
-            path: issue.path.filter((segment): segment is string | number => {
-              const kind = typeof segment;
-              return kind === "string" || kind === "number";
-            }),
-            message: formatOpenShellConfigIssue(issue),
-          })),
+          issues: mapPluginConfigIssues(parsed.error.issues),
         },
       };
     },
@@ -176,7 +161,7 @@ export function resolveOpenShellPluginConfig(value: unknown): ResolvedOpenShellP
 
   const parsed = OpenShellPluginConfigSchema.safeParse(value);
   if (!parsed.success) {
-    const message = formatOpenShellConfigIssue(parsed.error.issues[0]);
+    const message = formatPluginConfigIssue(parsed.error.issues[0]);
     throw new Error(`Invalid openshell plugin config: ${message}`);
   }
   const cfg = parsed.data as OpenShellPluginConfig;
diff --git a/src/plugin-sdk/extension-shared.ts b/src/plugin-sdk/extension-shared.ts
index 98eec401b8d..f21dad06395 100644
--- a/src/plugin-sdk/extension-shared.ts
+++ b/src/plugin-sdk/extension-shared.ts
@@ -143,6 +143,54 @@ const DEFAULT_PACKAGE_JSON_VERSION_CANDIDATES = [
 
 type PackageJsonRequire = (id: string) => unknown;
 
+type PluginConfigIssuePathSegment = string | number;
+
+type PluginConfigIssue = {
+  path: PluginConfigIssuePathSegment[];
+  message: string;
+};
+
+type PluginConfigIssueMessageOptions = {
+  invalidConfigMessage?: string;
+  unknownKeyMessage?: (key: string) => string;
+  rootInvalidTypeMessage?: string;
+};
+
+export function formatPluginConfigIssue(
+  issue: z.ZodIssue | undefined,
+  options?: PluginConfigIssueMessageOptions,
+): string {
+  if (!issue) {
+    return options?.invalidConfigMessage ?? "invalid config";
+  }
+  if (issue.code === "unrecognized_keys" && issue.keys.length > 0) {
+    return options?.unknownKeyMessage?.(issue.keys[0]) ?? `unknown config key: ${issue.keys[0]}`;
+  }
+  if (issue.code === "invalid_type" && issue.path.length === 0) {
+    return options?.rootInvalidTypeMessage ?? "expected config object";
+  }
+  return issue.message;
+}
+
+export function normalizePluginConfigIssuePath(
+  path: readonly unknown[],
+): PluginConfigIssuePathSegment[] {
+  return path.filter((segment): segment is PluginConfigIssuePathSegment => {
+    const kind = typeof segment;
+    return kind === "string" || kind === "number";
+  });
+}
+
+export function mapPluginConfigIssues(
+  issues: readonly z.ZodIssue[],
+  options?: PluginConfigIssueMessageOptions,
+): PluginConfigIssue[] {
+  return issues.map((issue) => ({
+    path: normalizePluginConfigIssuePath(issue.path),
+    message: formatPluginConfigIssue(issue, options),
+  }));
+}
+
 export function readPluginPackageVersion(params: {
   require: PackageJsonRequire;
   candidates?: readonly string[];