docs: Add setup instructions for required API keys

README.md

@@ -157,6 +157,16 @@ RGB+NIR sensors to monitor chlorophyll content and adjusts light intensity
 - **Real AI**: Multi-agent analysis with business intelligence
 - **Compilation**: Local, web-based, and Overleaf integration
 
+## 🚨 Required Setup: API Keys
+
+For full functionality, especially for the live prior art search, you must create a `.env` file in the root of this project and add your API keys.
+
+1.  Create a file named `.env`.
+2.  Copy the content from `.env.example` into it.
+3.  Replace the placeholder text with your actual API keys.
+
+This is essential for the `PriorArtDetective` and `Conceptual Artist` agents to work correctly.
+
 ## 📞 Support & Documentation
 
 - **Enhanced Features Guide**: See `ENHANCED_DUAL_OUTPUT_FEATURES.md`