diff --git a/index.test.ts b/index.test.ts
new file mode 100644
index 0000000..39baa4a
--- /dev/null
+++ b/index.test.ts
@@ -0,0 +1,117 @@
+import { describe, it, expect } from "vitest";
+import { getHost, getPort, jsonSchemaToTypebox } from "./index.js";
+import { Type, Kind, OptionalKind } from "@sinclair/typebox";
+
+describe("getHost", () => {
+  it("returns default host when no config", () => {
+    expect(getHost()).toBe("127.0.0.1");
+    expect(getHost(undefined)).toBe("127.0.0.1");
+  });
+
+  it("returns default host when config has no mcpHost", () => {
+    expect(getHost({})).toBe("127.0.0.1");
+    expect(getHost({ mcpHost: 123 })).toBe("127.0.0.1");
+    expect(getHost({ mcpHost: "" })).toBe("127.0.0.1");
+  });
+
+  it("returns custom host from config", () => {
+    expect(getHost({ mcpHost: "192.168.1.100" })).toBe("192.168.1.100");
+  });
+});
+
+describe("getPort", () => {
+  it("returns default port when no config", () => {
+    expect(getPort()).toBe(9990);
+    expect(getPort(undefined)).toBe(9990);
+  });
+
+  it("returns default port when config has no mcpPort", () => {
+    expect(getPort({})).toBe(9990);
+    expect(getPort({ mcpPort: "9991" })).toBe(9990);
+  });
+
+  it("returns custom port from config", () => {
+    expect(getPort({ mcpPort: 8080 })).toBe(8080);
+  });
+});
+
+describe("jsonSchemaToTypebox", () => {
+  it("returns empty object schema for undefined input", () => {
+    const schema = jsonSchemaToTypebox(undefined);
+    expect(schema[Kind]).toBe("Object");
+    expect(schema.properties).toEqual({});
+  });
+
+  it("returns empty object schema for schema without properties", () => {
+    const schema = jsonSchemaToTypebox({ type: "object" });
+    expect(schema.properties).toEqual({});
+  });
+
+  it("converts string property", () => {
+    const schema = jsonSchemaToTypebox({
+      properties: { name: { type: "string", description: "A name" } },
+      required: ["name"],
+    });
+    expect(schema.properties).toHaveProperty("name");
+    expect(schema.properties.name[Kind]).toBe("String");
+    expect(schema.properties.name.description).toBe("A name");
+  });
+
+  it("converts number and integer properties", () => {
+    const schema = jsonSchemaToTypebox({
+      properties: {
+        speed: { type: "number" },
+        count: { type: "integer" },
+      },
+      required: ["speed", "count"],
+    });
+    expect(schema.properties.speed[Kind]).toBe("Number");
+    expect(schema.properties.count[Kind]).toBe("Number");
+  });
+
+  it("converts boolean property", () => {
+    const schema = jsonSchemaToTypebox({
+      properties: { enabled: { type: "boolean" } },
+      required: ["enabled"],
+    });
+    expect(schema.properties.enabled[Kind]).toBe("Boolean");
+  });
+
+  it("marks properties not in required array as optional", () => {
+    const schema = jsonSchemaToTypebox({
+      properties: {
+        req: { type: "string" },
+        opt: { type: "string" },
+      },
+      required: ["req"],
+    });
+    // Required property has no Optional symbol
+    expect(schema.properties.req[OptionalKind]).toBeUndefined();
+    // Non-required property has Optional symbol
+    expect(schema.properties.opt[OptionalKind]).toBe("Optional");
+  });
+
+  it("converts array property", () => {
+    const schema = jsonSchemaToTypebox({
+      properties: { items: { type: "array" } },
+      required: ["items"],
+    });
+    expect(schema.properties.items[Kind]).toBe("Array");
+  });
+
+  it("converts object property to Record", () => {
+    const schema = jsonSchemaToTypebox({
+      properties: { metadata: { type: "object" } },
+      required: ["metadata"],
+    });
+    expect(schema.properties.metadata[Kind]).toBe("Record");
+  });
+
+  it("defaults unknown types to string", () => {
+    const schema = jsonSchemaToTypebox({
+      properties: { unknown: { type: "foobar" } },
+      required: ["unknown"],
+    });
+    expect(schema.properties.unknown[Kind]).toBe("String");
+  });
+});
diff --git a/index.ts b/index.ts
index bba3593..eec9d62 100644
--- a/index.ts
+++ b/index.ts
@@ -14,14 +14,14 @@ interface McpToolDef {
   inputSchema: Record<string, unknown>;
 }
 
-function getHost(pluginConfig?: Record<string, unknown>): string {
+export function getHost(pluginConfig?: Record<string, unknown>): string {
   if (pluginConfig && typeof pluginConfig.mcpHost === "string" && pluginConfig.mcpHost) {
     return pluginConfig.mcpHost;
   }
   return DEFAULT_HOST;
 }
 
-function getPort(pluginConfig?: Record<string, unknown>): number {
+export function getPort(pluginConfig?: Record<string, unknown>): number {
   if (pluginConfig && typeof pluginConfig.mcpPort === "number") {
     return pluginConfig.mcpPort;
   }
@@ -29,7 +29,7 @@ function getPort(pluginConfig?: Record<string, unknown>): number {
 }
 
 /** Convert a JSON Schema properties object into a TypeBox Type.Object schema. */
-function jsonSchemaToTypebox(
+export function jsonSchemaToTypebox(
   inputSchema?: Record<string, unknown>,
 ): ReturnType<typeof Type.Object> {
   if (!inputSchema) {
diff --git a/package.json b/package.json
index 957a485..205b803 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,13 @@
   "description": "Exposes dimos MCP tools to the OpenClaw agent",
   "type": "module",
   "dependencies": {},
-  "devDependencies": {},
+  "scripts": {
+    "test": "vitest run"
+  },
+  "devDependencies": {
+    "vitest": "^3.0.0",
+    "@sinclair/typebox": "^0.34.0"
+  },
   "peerDependencies": {
     "openclaw": ">=2026.1.26"
   },