Blender 3D Network Visualization

Create stunning 3D network topology visualizations in Blender from CDP/LLDP neighbor data. Network engineers can request topology drawings via natural language, and NetClaw translates neighbor discovery data into 3D rendering commands.

When to Use

• Visualizing network topology in 3D for presentations
• Creating topology diagrams from CDP/LLDP neighbor data
• Exporting network diagrams as PNG images
• Customizing device colors and adding labels
• Demonstrating network architecture to stakeholders

MCP Server

• Server: blender-mcp (community MCP via uvx)
• Command: uvx blender-mcp (stdio transport)
• Host: Windows running Blender with BlenderMCP addon (port 9876)
• Requirements: Blender 3.0+, BlenderMCP addon installed and connected

Available Tools

Tool	Parameters	What It Does
get_scene_info	None	Returns current Blender scene objects
create_object	type, name, location, scale	Creates primitives (cube, sphere, cylinder)
modify_object	name, position?, rotation?, scale?	Transform position/rotation/scale
set_material	object_name, color, metallic?, roughness?	Apply colors and materials
execute_blender_code	code	Run arbitrary Python in Blender

Workflow Examples

Draw Network Topology

# Draw topology from CDP/LLDP data
"Draw the network topology in Blender using CDP data"

# Visualize neighbors for a specific device
"Visualize the CDP neighbors for core-rtr-01 in 3D"

# Create diagram from LLDP data
"Create a 3D network diagram from the LLDP data"

# Quick topology request
"Show me the network topology in Blender"

Export Visualization

# Export as PNG
"Export the Blender scene as topology.png"

# Save the diagram
"Save the network diagram as a PNG file"

# Render to image
"Render the topology to an image"

Customize Visualization

# Color customization
"Color router-1 red"
"Make all switches purple"
"Change the color of the firewalls to orange"

# Add labels
"Add labels to all devices"
"Label each device with its hostname"

# Highlighting
"Highlight router-1"
"Make core-rtr-01 stand out"

Scene Management

# Clear scene
"Clear the Blender scene"
"Reset the 3D view"

# Query scene
"What objects are in the Blender scene?"
"List the devices in Blender"

Device Color Mapping

Device Type	Color	RGB
Router	Blue	(0.2, 0.4, 0.8)
Switch	Green	(0.2, 0.7, 0.3)
Firewall	Red	(0.8, 0.2, 0.2)
Access Point	Yellow	(0.9, 0.8, 0.2)
Unknown	Gray	(0.5, 0.5, 0.5)

Device types are inferred from hostnames:

• Contains "rtr" or "router" → Router
• Contains "sw" or "switch" → Switch
• Contains "fw" or "firewall" or "asa" → Firewall
• Contains "ap" or "wap" or "wireless" → Access Point

Integration with Other Skills

• pyats-run: Query CDP/LLDP neighbor data from live devices
• suzieq-show: Query network state from SuzieQ observability platform
• canvas-a2ui: Alternative 2D visualization in chat

Error Handling

Error Code	Meaning	Resolution
CONNECTION_FAILED	Blender not running or addon not connected	Start Blender, click 'Connect to Claude' in BlenderMCP panel
ADDON_NOT_READY	Addon not connected	Press 'N' in Blender, find BlenderMCP tab, click 'Connect'
NO_CDP_DATA	No neighbor data available	Query network devices first via pyats-run or suzieq-show
TIMEOUT	First command may timeout	This is normal - retry the same command
EXPORT_FAILED	Export failed (window minimized)	Ensure Blender window is visible

Notes

• Read-only operations - no ServiceNow CR gating required
• Maximum 25 devices rendered per topology (performance limit)
• First command may timeout - subsequent commands are faster
• Requires Windows running Blender (WSL connectivity to Windows host)
• All operations logged to GAIT audit trail