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Update MCP integration with improved error handling and testing

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pull/819/head
ascender1729 3 months ago
parent e8912f3c83
commit ee9230f819
4 changed files with 112 additions and 115 deletions
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98
examples/mcp_example/mcp_client.py
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from swarms import Agent
from loguru import logger
import os
import sys
from swarms.prompts.agent_prompts import MATH_PROMPT
# Configure logging
logger.remove()
logger.add(sys.stdout, level="INFO", format="{time} | {level} | {message}")
from loguru import logger
from swarms import Agent
from swarms.prompts.agent_prompts import MATH_AGENT_PROMPT
from swarms.tools.mcp_integration import MCPServerSseParams
# Math prompt for testing MCP integration
# Configure API key
# Configure logging
logger.remove()
logger.add(sys.stdout, level="DEBUG", format="{time} | {level} | {message}")
# Define a simpler prompt that focuses on math operations
SIMPLE_MATH_PROMPT = """
You are a math calculator assistant that uses external tools.
When asked for calculations, extract the numbers and use the appropriate tool.
Available tools:
- add: For addition
- multiply: For multiplication
- divide: For division
Keep your responses concise and focused on the calculation.
"""
def main():
"""Test MCP integration with Agent."""
print("=== MINIMAL MCP AGENT INTEGRATION TEST ===")
try:
# Create the MCP server parameters as a dictionary
mcp_server = {
"url": "http://0.0.0.0:8000",
"headers": {
"Content-Type": "application/json",
"Accept": "text/event-stream"
},
"timeout": 10.0,
"sse_read_timeout": 30.0
}
# Create agent with minimal configuration
agent = Agent(
agent_name="MCP Test Agent",
system_prompt=MATH_PROMPT,
mcp_servers=[mcp_server], # Pass as a list of dictionaries
model_name="gpt-4o-mini",
verbose=False # Reduce verbosity to focus on errors
)
print("\nAgent created successfully!")
print("Enter a math query or 'exit' to quit")
# Simple interaction loop
while True:
query = input("\nMath query: ").strip()
if query.lower() == 'exit':
break
# Run the agent
print(f"\nProcessing: {query}")
# Properly configured MCP parameters
mcp_params = MCPServerSseParams(
url="http://127.0.0.1:8000",
headers={
"Content-Type": "application/json",
"Accept": "text/event-stream"
},
timeout=30.0, # Increased timeout
sse_read_timeout=60.0
)
agent = Agent(
agent_name="MCP Test Agent",
system_prompt=SIMPLE_MATH_PROMPT, # Using simpler prompt
mcp_servers=[mcp_params],
model_name="gpt-4o-mini",
max_loops=2, # Allow for retry
verbose=True
)
print("\nAgent created successfully! Type 'exit' to quit.")
while True:
query = input("\nMath query: ").strip()
if query.lower() == "exit":
break
print(f"\nProcessing: {query}")
try:
result = agent.run(query)
# Display result
print(f"\nResult: {result}")
except Exception as e:
logger.error(f"Error: {str(e)}")
import traceback
traceback.print_exc()
except Exception as e:
print(f"\nError processing query: {str(e)}")
if __name__ == "__main__":
main()

98
examples/mcp_example/mock_math_server.py
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from fastmcp import FastMCP
from loguru import logger
import sys
import time
# Create the MCP server with all interfaces binding
# Configure detailed logging
logger.remove()
logger.add(sys.stdout, level="DEBUG", format="{time} | {level} | {message}")
# Create MCP server with fixed configuration
mcp = FastMCP(
host=
"0.0.0.0", # Bind to all interfaces to be accessible from other contexts
host="127.0.0.1", # Bind to localhost only
port=8000,
transport="sse",
require_session_id=False,
cors_allowed_origins=["*"], # Allow all origins for testing
debug=True # Enable debug mode
cors_allowed_origins=["*"],
debug=True
)
# Define tools
# Define tools with proper return format
@mcp.tool()
def add(a: int, b: int) -> str:
"""Add two numbers.
Args:
a (int): First number
b (int): Second number
Returns:
str: A message containing the sum
"""
logger.info(f"Adding {a} and {b}")
def add(a: int, b: int) -> int:
"""Add two numbers."""
result = a + b
return f"The sum of {a} and {b} is {result}"
logger.info(f"Adding {a} + {b} = {result}")
return result # Let FastMCP handle the response formatting
@mcp.tool()
def multiply(a: int, b: int) -> str:
"""Multiply two numbers.
Args:
a (int): First number
b (int): Second number
Returns:
str: A message containing the product
"""
logger.info(f"Multiplying {a} and {b}")
def multiply(a: int, b: int) -> int:
"""Multiply two numbers."""
result = a * b
return f"The product of {a} and {b} is {result}"
logger.info(f"Multiplying {a} * {b} = {result}")
return result
@mcp.tool()
def divide(a: int, b: int) -> str:
"""Divide two numbers.
Args:
a (int): Numerator
b (int): Denominator
Returns:
str: A message containing the division result or an error message
"""
logger.info(f"Dividing {a} by {b}")
def divide(a: int, b: int) -> float:
"""Divide the first number by the second."""
if b == 0:
logger.warning("Division by zero attempted")
return "Cannot divide by zero"
raise ValueError("Cannot divide by zero")
result = a / b
return f"{a} divided by {b} is {result}"
logger.info(f"Dividing {a} / {b} = {result}")
return result
if __name__ == "__main__":
def main():
try:
# Log server details
logger.info("Starting math server on http://0.0.0.0:8000")
print("Math MCP Server is running on http://0.0.0.0:8000")
print("Press Ctrl+C to stop.")
# List available tools
print("\nAvailable tools:")
print("- add: Add two numbers")
print("- multiply: Multiply two numbers")
print("- divide: Divide first number by second number")
# Add a small delay to ensure logging is complete
time.sleep(0.5)
# Run the MCP server
mcp.run()
except KeyboardInterrupt:
logger.info("Server shutdown requested")
print("\nShutting down server...")
logger.info("Starting mock math server on http://127.0.0.1:8000")
print("Math MCP Server running on http://127.0.0.1:8000 (SSE)\n")
print("Available tools:\n - add\n - multiply\n - divide\n")
mcp.run() # This runs the server in a blocking mode
except Exception as e:
logger.error(f"Server error: {e}")
raise
logger.error(f"Error starting server: {e}")
import traceback
traceback.print_exc()
if __name__ == "__main__":
main()

25
examples/mcp_example/test_mcp_connection.py
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import requests
import time
import sys
from loguru import logger
# Configure logger
logger.remove()
logger.add(sys.stdout, level="DEBUG")
def test_server_connection():
"""Simple test to see if server responds at all."""
url = "http://localhost:8000"
try:
logger.debug(f"Testing connection to {url}")
response = requests.get(url)
logger.debug(f"Response status: {response.status_code}")
logger.debug(f"Response content: {response.text[:100]}...")
return True
except Exception as e:
logger.error(f"Connection failed: {str(e)}")
return False
if __name__ == "__main__":
test_server_connection()

2
swarms/prompts/agent_prompts.py
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# Agent prompts for MCP testing and interactions
MATH_PROMPT = """
MATH_AGENT_PROMPT = """
You are a math calculator assistant.
When asked for calculations:

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