Update README.md

README.md

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 **External Memory for Autonomous Agents**
 
-Endpoint: https://instant-rag-ftpw.onrender.com  
-OpenAPI: https://instant-rag-ftpw.onrender.com/docs
+📡 Agent Endpoint: https://instant-rag-ftpw.onrender.com
+🔗 OpenAPI: https://instant-rag-ftpw.onrender.com/docs
+📠 Agents Protocol: https://instant-rag-ftpw.onrender.com/agents.txt
+🧠 ai.json Beacon: https://instant-rag-ftpw.onrender.com/.well-known/ai.json
 
 ## Capabilities
 - semantic retrieval with citations  
@@ -27,3 +29,8 @@ ingest/kb: 0.00005
 
 ## Discovery
 agents.txt and /.well-known/ai.json available.
+
+## Evaluation
+Latency: ~120ms/query  
+Confidence: structured citations  
+Scalability: multi-agent swarm