diff --git a/src/converters/claude-to-openclaw.ts b/src/converters/claude-to-openclaw.ts
index 83a0192..ba2435c 100644
--- a/src/converters/claude-to-openclaw.ts
+++ b/src/converters/claude-to-openclaw.ts
@@ -64,6 +64,10 @@ function buildManifest(plugin: ClaudePlugin, skillDirs: string[]): OpenClawPlugi
     id: plugin.manifest.name,
     name: formatDisplayName(plugin.manifest.name),
     kind: "tool",
+    configSchema: {
+      type: "object",
+      properties: {},
+    },
     skills: skillDirs.map((dir) => `skills/${dir}`),
   }
 }
diff --git a/src/types/openclaw.ts b/src/types/openclaw.ts
index 5d68910..378336f 100644
--- a/src/types/openclaw.ts
+++ b/src/types/openclaw.ts
@@ -2,16 +2,18 @@ export type OpenClawPluginManifest = {
   id: string
   name: string
   kind: "tool"
-  configSchema?: {
-    type: "object"
-    additionalProperties: boolean
-    properties: Record<string, OpenClawConfigProperty>
-    required?: string[]
-  }
+  configSchema: OpenClawConfigSchema
   uiHints?: Record<string, OpenClawUiHint>
   skills?: string[]
 }
 
+export type OpenClawConfigSchema = {
+  type: "object"
+  properties: Record<string, OpenClawConfigProperty>
+  additionalProperties?: boolean
+  required?: string[]
+}
+
 export type OpenClawConfigProperty = {
   type: string
   description?: string
diff --git a/tests/openclaw-converter.test.ts b/tests/openclaw-converter.test.ts
index 7cde0ae..e1648d5 100644
--- a/tests/openclaw-converter.test.ts
+++ b/tests/openclaw-converter.test.ts
@@ -108,6 +108,10 @@ describe("convertClaudeToOpenClaw", () => {
     expect(bundle.manifest.id).toBe("compound-engineering")
     expect(bundle.manifest.name).toBe("Compound Engineering")
     expect(bundle.manifest.kind).toBe("tool")
+    expect(bundle.manifest.configSchema).toEqual({
+      type: "object",
+      properties: {},
+    })
     expect(bundle.manifest.skills).toContain("skills/agent-security-reviewer")
     expect(bundle.manifest.skills).toContain("skills/cmd-workflows:plan")
     expect(bundle.manifest.skills).toContain("skills/existing-skill")
diff --git a/tests/openclaw-writer.test.ts b/tests/openclaw-writer.test.ts
new file mode 100644
index 0000000..ab618d9
--- /dev/null
+++ b/tests/openclaw-writer.test.ts
@@ -0,0 +1,43 @@
+import { describe, expect, test } from "bun:test"
+import { promises as fs } from "fs"
+import os from "os"
+import path from "path"
+import { writeOpenClawBundle } from "../src/targets/openclaw"
+import type { OpenClawBundle } from "../src/types/openclaw"
+
+describe("writeOpenClawBundle", () => {
+  test("writes openclaw.plugin.json with a configSchema", async () => {
+    const tempRoot = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-writer-"))
+    const bundle: OpenClawBundle = {
+      manifest: {
+        id: "compound-engineering",
+        name: "Compound Engineering",
+        kind: "tool",
+        configSchema: {
+          type: "object",
+          properties: {},
+        },
+        skills: [],
+      },
+      packageJson: {
+        name: "openclaw-compound-engineering",
+        version: "1.0.0",
+      },
+      entryPoint: "export default async function register() {}",
+      skills: [],
+      skillDirCopies: [],
+      commands: [],
+    }
+
+    await writeOpenClawBundle(tempRoot, bundle)
+
+    const manifest = JSON.parse(
+      await fs.readFile(path.join(tempRoot, "openclaw.plugin.json"), "utf8"),
+    )
+
+    expect(manifest.configSchema).toEqual({
+      type: "object",
+      properties: {},
+    })
+  })
+})