Update README.md

README.md

@@ -69,7 +69,7 @@ py -3.11 -m pip install -r requirements.txt
 ```
 
 ## **Environment Variables**
-Store some API keys in the `.env` file and load it in your code using `load_dotenv`
+Store some API keys an variables in the `.env` file and load it in your code using `load_dotenv`
 
 ```
 SUPABASE_URL=...
@@ -77,6 +77,12 @@ SUPABASE_SERVICE_ROLE_KEY=...
 SUPABASE_SERVICE_KEY=...
 HUGGINGFACEHUB_API_TOKEN=...
 GROQ_API_KEY=...
+TAVILY_API_KEY=...
+LANGSMITH_API_KEY=...
+
+LANGSMITH_TRACING=true
+LANGSMITH_PROJECT=ai_agent_course
+LANGSMITH_ENDPOINT=https://api.smith.langchain.com
 ```
 
 ## **Demo**