Chat plugin

Signed-off-by: Hubert Zub <hubert.zub@databricks.com>

Author: hubertzub-db

integrations/appkit-agent/package.json

@@ -16,6 +16,16 @@
         "types": "./dist/index.d.cts",
         "default": "./dist/index.cjs"
       }
+    },
+    "./chat": {
+      "import": {
+        "types": "./dist/chat/index.d.mts",
+        "default": "./dist/chat/index.mjs"
+      },
+      "require": {
+        "types": "./dist/chat/index.d.cts",
+        "default": "./dist/chat/index.cjs"
+      }
     }
   },
   "files": [
@@ -36,15 +46,16 @@
     "format:check": "prettier --check 'src/**/*.ts'"
   },
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "peerDependencies": {
     "@databricks/appkit": ">=0.21.0",
     "@databricks/langchainjs": ">=0.1.0",
     "@langchain/core": ">=1.0.0",
     "@langchain/langgraph": ">=1.0.0",
     "@langchain/mcp-adapters": ">=1.0.0",
-    "express": ">=4.0.0"
+    "express": ">=4.0.0",
+    "pg": ">=8.0.0"
   },
   "peerDependenciesMeta": {
     "@databricks/langchainjs": {
@@ -58,16 +69,23 @@
     },
     "@langchain/mcp-adapters": {
       "optional": true
+    },
+    "pg": {
+      "optional": true
     }
   },
   "dependencies": {
+    "@databricks/ai-sdk-provider": "^0.5.1",
+    "ai": "^6.0.70",
+    "drizzle-orm": "^0.38.0",
     "zod": "^4.3.5"
   },
   "devDependencies": {
     "@databricks/appkit": "^0.21.0",
     "@langchain/core": "^1.1.8",
     "@types/express": "^4.17.25",
     "@types/node": "^22.0.0",
+    "@types/pg": "^8.16.0",
     "prettier": "^3.0.0",
     "tsdown": "^0.9.0",
     "typescript": "^5.4.0",

integrations/appkit-agent/pnpm-lock.yaml

@@ -217,6 +217,7 @@ export class AgentPlugin extends Plugin<IAgentConfig> {
   injectRoutes(router: express.Router) {
     const handler = createInvokeHandler(() => this.getAgentImpl());
     router.post("/", handler);
+    router.post("/responses", handler);
     this.registerEndpoint("invoke", `/api/${this.name}`);
   }
 
@@ -233,6 +234,8 @@ export class AgentPlugin extends Plugin<IAgentConfig> {
 
   exports() {
     return {
+      endpointPath: `/api/${this.name}`,
+
       invoke: async (
         messages: { role: string; content: string }[],
       ): Promise<string> => {