Nautobot MCP Server v2

Enhanced Nautobot 3.1.0 integration for NetClaw — GraphQL reads, REST writes, ITSM-gated changes, live-vs-SoT reconciliation.

Replaces the v1 mcp-nautobot (5 IPAM-only REST tools) with 13 tools covering devices, interfaces, VLANs, prefixes, IP addresses, cables, raw GraphQL, write operations, and reconciliation.

Architecture

• Reads: GraphQL API (POST /api/graphql/) — efficient field selection, nested relationships
• Writes: REST API (POST/PATCH /api/dcim/*, /api/ipam/*) — Nautobot 3.1.0 has no GraphQL mutations
• Transport: stdio (FastMCP)

Tools (13)

Read Tools (7) — GraphQL

Tool	Description
nautobot_get_devices	Query devices with filters (name, location, role, platform, status)
nautobot_get_interfaces	Query interfaces with VLAN assignments, IPs, cable peer
nautobot_get_vlans	Query VLANs with locations, groups, tenants
nautobot_get_prefixes	Query IP prefixes from IPAM
nautobot_get_ip_addresses	Query IP addresses with interface/device assignments
nautobot_get_cables	Query cables with resolved endpoint names
nautobot_graphql	Execute arbitrary GraphQL queries (plugins, custom fields)

Write Tools (5) — REST API, ITSM-gated

Tool	Description
nautobot_create_ip_address	Create IP address, optionally assign to interface
nautobot_create_vlan	Create VLAN with location association
nautobot_create_prefix	Create IP prefix
nautobot_update_object	Update any object (device, interface, IP, VLAN, prefix, cable)
nautobot_reconcile	Compare live device state against Nautobot SoT

Utility (1)

Tool	Description
nautobot_test_connection	Verify GraphQL and REST connectivity

Environment Variables

Variable	Required	Default	Description
NAUTOBOT_URL	Yes	—	Nautobot base URL (e.g., https://nautobot.example.com)
NAUTOBOT_TOKEN	Yes	—	API token with read+write permissions
NAUTOBOT_VERIFY_SSL	No	false	Verify SSL certificates
NAUTOBOT_TIMEOUT	No	30	Request timeout in seconds
ITSM_ENABLED	No	false	Enable ITSM gating for writes
ITSM_LAB_MODE	No	true	Bypass ITSM gating for lab use

Installation

cd mcp-servers/nautobot-mcp-v2/
pip install -r requirements.txt

Standalone Test

export NAUTOBOT_URL="https://nautobot.example.com"
export NAUTOBOT_TOKEN="your-token"
export NAUTOBOT_VERIFY_SSL="false"
python3 -u server.py

Files

File	Purpose
server.py	FastMCP server with all 13 tool definitions
nautobot_client.py	GraphQL + REST client, ID resolution, error handling
reconcile.py	Interface reconciliation diff engine
requirements.txt	Python dependencies