examples(travel-concierge): fail fast on missing Moss creds (agent + seed_index), add uuid suffix to session name (no same-second collision), Node 18.18+ in README

Author: HarshaNalluru

moss-live-labs/examples/travel-concierge/README.md

@@ -14,7 +14,7 @@ Browser (web/)  ⟷  LiveKit room  ⟷  agent.py (STT → LLM → TTS)  ⟷  Mos
 
 ## What you need
 - A [Moss](https://moss.dev) account · [LiveKit](https://livekit.io) (local) · OpenAI (LLM),
-  Deepgram (STT), Cartesia (TTS) keys · Python 3.14+ (`uv`) and Node 18+.
+  Deepgram (STT), Cartesia (TTS) keys · Python 3.14+ (`uv`) and Node 18.18+.
 
 ## Setup
 ```bash

moss-live-labs/examples/travel-concierge/agent.py

@@ -3,6 +3,7 @@
 import logging
 import os
 import time
+import uuid
 from datetime import datetime
 
 from dotenv import load_dotenv
@@ -169,6 +170,10 @@ async def _remember_facts(self, text: str) -> None:
 
 
 async def entrypoint(ctx: JobContext):
+    if not MOSS_PROJECT_ID or not MOSS_PROJECT_KEY:
+        raise SystemExit(
+            "Missing MOSS_PROJECT_ID / MOSS_PROJECT_KEY. Copy .env.example to .env and fill them in."
+        )
     await ctx.connect()
 
     client = MossClient(project_id=MOSS_PROJECT_ID, project_key=MOSS_PROJECT_KEY)
@@ -180,8 +185,9 @@ async def entrypoint(ctx: JobContext):
     except Exception as e:
         logger.warning(f"Catalog not found ({e}). Run seed_index.py first.")
 
-    # Short-term: a fresh, empty session just for this call.
-    session_name = f"trip-session-{datetime.now():%Y%m%d-%H%M%S}"
+    # Short-term: a fresh, empty session just for this call. The uuid suffix keeps
+    # it unique even if two calls start in the same second.
+    session_name = f"trip-session-{datetime.now():%Y%m%d-%H%M%S}-{uuid.uuid4().hex[:6]}"
     session_index = await client.session(session_name)
     logger.info(f"Opened live session: {session_name}")
 

moss-live-labs/examples/travel-concierge/seed_index.py

@@ -27,6 +27,11 @@
 
 
 async def main() -> None:
+    if not MOSS_PROJECT_ID or not MOSS_PROJECT_KEY:
+        raise SystemExit(
+            "Missing MOSS_PROJECT_ID / MOSS_PROJECT_KEY. Copy .env.example to .env and fill them in."
+        )
+
     trips = json.loads(CATALOG_PATH.read_text())
     docs = [DocumentInfo(id=t["id"], text=t["text"]) for t in trips]
     client = MossClient(project_id=MOSS_PROJECT_ID, project_key=MOSS_PROJECT_KEY)