docs: expand run.py docstring with prerequisites and usage

Author: mesutoezdil

examples/zero-code-examples/agentcore/run.py

@@ -1,4 +1,24 @@
-"""AWS AgentCore zero-code OTLP example."""
+"""Run a Strands dice agent inside AWS AgentCore with standard OTLP export.
+
+Demonstrates zero-code integration: the BedrockAgentCoreApp runtime wraps a
+Strands agent and serves it over HTTP. StrandsTelemetry emits OTel spans which
+are forwarded to agentevals via OTLPSpanExporter, with no agentevals SDK needed.
+
+The agent exposes two tools:
+  roll_die   -- rolls a die with a given number of sides
+  check_prime -- checks whether a number is prime
+
+Prerequisites:
+    1. pip install -r examples/zero-code-examples/agentcore/requirements.txt
+    2. agentevals serve --dev
+    3. Configure AWS credentials (AWS_DEFAULT_REGION, AWS_ACCESS_KEY_ID, etc.)
+       or set AWS_DEFAULT_REGION=us-east-1 for local testing without Bedrock.
+
+Usage:
+    python examples/zero-code-examples/agentcore/run.py &
+    curl http://localhost:8080/invocations -H "Content-Type: application/json" \\
+         -d '{"prompt": "Roll a 20-sided die for me"}'
+"""
 
 import os
 import random