fix: real MCP readiness check in example + drop unused SseServerTransport

- simple-mcp-server.py: replace blind 2s sleep with TCP readiness poll so
  the smoke test genuinely verifies the server bound and exits non-zero on
  failure (addresses Greptile P1: daemon exited claiming false success)
- execution_mixin.py: remove now-unused SseServerTransport import/instance
  after switching to FastMCP.sse_app() (dead code flagged by Greptile)

Co-authored-by: Mervin Praison <[email protected]>

examples/python/api/simple-mcp-server.py

@@ -1,5 +1,34 @@
+import socket
+import sys
+import threading
+import time
+
 from praisonaiagents import Agent
 
+
+def _wait_until_ready(host: str, port: int, timeout: float = 15.0) -> bool:
+    """Poll the MCP server port until it accepts connections or times out."""
+    deadline = time.time() + timeout
+    while time.time() < deadline:
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
+            sock.settimeout(1.0)
+            if sock.connect_ex((host, port)) == 0:
+                return True
+        time.sleep(0.25)
+    return False
+
+
 if __name__ == "__main__":
+    host, port = "127.0.0.1", 8080
     agent = Agent(name="TweetAgent", instructions="Create a Tweet based on the topic provided")
-    agent.launch(port=8080, protocol="mcp", path="/mcp")
+    server = threading.Thread(
+        target=lambda: agent.launch(port=port, protocol="mcp", path="/mcp"),
+        daemon=True,
+    )
+    server.start()
+
+    if _wait_until_ready(host, port):
+        print(f"MCP server started on http://{host}:{port}/mcp")
+    else:
+        print(f"MCP server failed to start on http://{host}:{port}/mcp", file=sys.stderr)
+        sys.exit(1)

examples/python/concepts/knowledge-reranker-example.py

@@ -150,7 +150,7 @@ def main():
     agent = Agent(
         name="AI Research Assistant",
         instructions="You are an AI research assistant. Use your knowledge base to answer questions about artificial intelligence topics.",
-        knowledge={**rerank_config, "sources": sample_documents},
+        knowledge={"sources": sample_documents, "rerank": True},
         llm="gpt-4o-mini"
     )
     

examples/python/memory/advanced-graph-memory-integration.py

@@ -67,6 +67,7 @@ agents_system = AgentTeam(
 print("Starting graph memory demonstration...")
 result = agents_system.start()
 
-print(f"\nGraph Memory Result: {result[:200]}...")
+result_text = str(result) if result is not None else ""
+print(f"\nGraph Memory Result: {result_text[:200]}...")
 print("\n✅ Graph memory integration complete!")
 print("Agent built knowledge graph and performed relationship-aware queries.")

examples/tools/external/hackernews/tool.py

@@ -30,9 +30,11 @@ def main():
     else:
         print(f"Found {len(stories)} top stories:")
         for story in stories:
-            print(f"  - {story.get('title', 'N/A')[:50]}...")
+            title = story.get("title") or "N/A"
+            url = story.get("url") or "N/A"
+            print(f"  - {title[:50]}...")
             print(f"    Score: {story.get('score', 'N/A')} | Comments: {story.get('descendants', 'N/A')}")
-            print(f"    URL: {story.get('url', 'N/A')[:60]}...")
+            print(f"    URL: {url[:60]}...")
             print()
     
     print("✅ Hacker News tool working correctly!")

src/praisonai-agents/praisonaiagents/agent/execution_mixin.py

@@ -1638,7 +1638,6 @@ Write the complete compiled report:"""
         try:
             import uvicorn
             from mcp.server.fastmcp import FastMCP
-            from mcp.server.sse import SseServerTransport
             from starlette.applications import Starlette
             from starlette.routing import Mount
             import threading
@@ -1669,9 +1668,8 @@ Write the complete compiled report:"""
 
             # Create and run MCP server
             base_path = (path or "/mcp").rstrip("/") or "/mcp"
-            transport = SseServerTransport(f"{base_path}/sse")
             starlette_app = Starlette(
-                routes=[Mount(base_path, mcp.create_app())]
+                routes=[Mount(base_path, mcp.sse_app())]
             )
 
             def run_mcp_server():