#!/usr/bin/env python3
"""
Script to test Blender MCP connection and create test objects:
- Blue cube
- Yellow sphere
"""
import socket
import json
def send_command(host, port, command_type, params=None):
"""Send a command to Blender and get response"""
try:
# Connect to Blender
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(10)
sock.connect((host, port))
print(f"✓ Connected to Blender at {host}:{port}")
# Prepare command
command = {
"type": command_type,
"params": params or {}
}
# Send command
command_json = json.dumps(command) + "\n"
sock.sendall(command_json.encode('utf-8'))
# Receive response
buffer = ""
while True:
chunk = sock.recv(4096).decode('utf-8')
if not chunk:
break
buffer += chunk
try:
response = json.loads(buffer)
sock.close()
return response
except json.JSONDecodeError:
continue
except ConnectionRefusedError:
print("✗ Connection refused. Make sure:")
print(" 1. Blender is running")
print(" 2. MCP addon is installed and enabled")
print(" 3. Server is started (check MCP panel in Blender)")
return None
except Exception as e:
print(f"✗ Error: {e}")
return None
def main():
HOST = "localhost"
PORT = 9876
print("=" * 60)
print("Blender MCP Connection Test")
print("=" * 60)
# Create a blue cube
print("\n[1/4] Creating blue cube...")
response = send_command(HOST, PORT, "create_object", {
"type": "cube",
"name": "BlueCube",
"location": [-3, 0, 0],
"size": 2.0
})
if response and response.get("status") == "success":
print(f"✓ Blue cube created successfully!")
else:
print(f"✗ Failed to create blue cube")
if response:
print(f"Response: {json.dumps(response, indent=2)}")
return
# Set blue color on cube
print("\n[2/4] Setting blue color on cube...")
response = send_command(HOST, PORT, "set_material", {
"name": "BlueCube",
"color": [0.0, 0.0, 1.0, 1.0] # Blue color (R, G, B, A)
})
if response and response.get("status") == "success":
print(f"✓ Blue color applied!")
else:
print(f"✗ Failed to set color")
if response:
print(f"Response: {json.dumps(response, indent=2)}")
# Create a yellow sphere
print("\n[3/4] Creating yellow sphere...")
response = send_command(HOST, PORT, "create_object", {
"type": "sphere",
"name": "YellowSphere",
"location": [3, 0, 0],
"radius": 1.5
})
if response and response.get("status") == "success":
print(f"✓ Yellow sphere created successfully!")
else:
print(f"✗ Failed to create yellow sphere")
if response:
print(f"Response: {json.dumps(response, indent=2)}")
return
# Set yellow color on sphere
print("\n[4/4] Setting yellow color on sphere...")
response = send_command(HOST, PORT, "set_material", {
"name": "YellowSphere",
"color": [1.0, 1.0, 0.0, 1.0] # Yellow color (R, G, B, A)
})
if response and response.get("status") == "success":
print(f"✓ Yellow color applied!")
else:
print(f"✗ Failed to set color")
if response:
print(f"Response: {json.dumps(response, indent=2)}")
print("\n" + "=" * 60)
print("✓ MCP Connection Test Complete!")
print("✓ Check your Blender viewport for:")
print(" - Blue cube at position (-3, 0, 0)")
print(" - Yellow sphere at position (3, 0, 0)")
print("=" * 60)
if __name__ == "__main__":
main()
