NetworkX Graph MCP Server

NetworkX Graph MCP Server

State/decision graph MCP server using NetworkX. Supports directed graphs (cycles allowed), explicit edge ordering, conditional branches, import/export, and visualization.

Setup

cd ~/Documents/networkx-graph-mcp-server
uv venv
source .venv/bin/activate
uv sync

MCP client config (example)

Add to your mcp_config.json:

{
  "mcpServers": {
    "networkx-graph": {
      "disabled": false,
      "timeout": 60,
      "type": "stdio",
      "command": "~/Documents/networkx-graph-mcp-server/.venv/bin/python",
      "args": ["-m", "networkx_graph"]
    }
  }
}

Tools (summary)

• Graph: create_state_graph, delete_state_graph, list_state_graphs, get_state_graph_info

• Nodes: add_node, update_node, remove_node, get_node, list_nodes

• Edges: add_edge, remove_edge, get_edges, set_edge_order, set_edge_condition, get_node_edges

• Bulk: bulk_add_nodes, bulk_add_edges

• Export/Visualize: export_graph (yaml/json), import_graph, visualize_graph (PNG)

• Analysis: validate_graph (warnings only, cycles allowed), get_graph_stats, find_path

Web Visualization

Interactive web browser for visualizing graphs:

uv run app.py

Then open your browser to: http://localhost:5000

Features:

• Load YAML/JSON graph files via file upload

• Interactive graph visualization with zoom, pan, and node selection

• View node details, statistics, and graph structure

• Color-coded nodes by type (action, decision, verification, loop, success, failure)