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Provides networking management for VMware NSX, including tools for managing segments, Tier-0 and Tier-1 gateways, NAT rules, static routes, and IP address pools (IPAM).

VMware NSX

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VMware NSX networking management: segments, gateways, NAT, routing, IPAM — 31 MCP tools, domain-focused.

NSX Policy API skill for NSX-T 3.0+ and NSX 4.x.

License: MIT

Companion Skills

Skill	Scope	Tools	Install
vmware-aiops ⭐ entry point	VM lifecycle, deployment, guest ops, clusters	31	`uv tool install vmware-aiops`
vmware-monitor	Read-only monitoring, alarms, events, VM info	8	`uv tool install vmware-monitor`
vmware-storage	Datastores, iSCSI, vSAN	11	`uv tool install vmware-storage`
vmware-vks	Tanzu Namespaces, TKC cluster lifecycle	20	`uv tool install vmware-vks`
vmware-nsx-security	DFW microsegmentation, security groups, Traceflow	20	`uv tool install vmware-nsx-security`
vmware-aria	Aria Ops metrics, alerts, capacity planning	18	`uv tool install vmware-aria`

Quick Install

# Via PyPI
uv tool install vmware-nsx-mgmt

# Or pip
pip install vmware-nsx-mgmt

Configuration

mkdir -p ~/.vmware-nsx
cp config.example.yaml ~/.vmware-nsx/config.yaml
# Edit with your NSX Manager credentials

echo "VMWARE_NSX_PROD_PASSWORD=your_password" > ~/.vmware-nsx/.env
chmod 600 ~/.vmware-nsx/.env

# Verify
vmware-nsx doctor

What This Skill Does

Category	Tools	Count
Segments	list, get, create, update, delete, ports	6
Tier-0 Gateways	list, get, BGP neighbors, route table	4
Tier-1 Gateways	list, get, create, update, delete, route table	6
NAT	list, get, create, update, delete	5
Static Routes	list, create, delete	3
IP Pools	list, allocations, create, add subnet	4
Health & Troubleshooting	alarms, transport nodes, edge clusters, manager status, port status, VM-to-segment	6

Common Workflows

Create an App Network (Segment + T1 Gateway + NAT)

Create gateway: vmware-nsx gateway create-t1 app-t1 --edge-cluster edge-cluster-01 --tier0 tier0-gw
Create segment: vmware-nsx segment create app-web-seg --gateway app-t1 --subnet 10.10.1.1/24 --transport-zone tz-overlay
Add SNAT: vmware-nsx nat create app-t1 --action SNAT --source 10.10.1.0/24 --translated 172.16.0.10
Verify: vmware-nsx segment list and vmware-nsx nat list app-t1

Use --dry-run to preview any write command first.

Check Network Health

Manager status: vmware-nsx health manager-status
Transport nodes: vmware-nsx health transport-nodes
Edge clusters: vmware-nsx health edge-clusters
Alarms: vmware-nsx health alarms

Troubleshoot VM Connectivity

Find VM's segment: vmware-nsx troubleshoot vm-segment my-vm-01
Check port status: vmware-nsx troubleshoot port-status <port-id>
Check routes: vmware-nsx gateway routes-t1 app-t1
Check BGP: vmware-nsx gateway bgp-neighbors tier0-gw

MCP Tools (31)

Category	Tools	Type
Segments	`list_segments`, `get_segment`, `create_segment`, `update_segment`, `delete_segment`, `list_segment_ports`	Read/Write
Tier-0 GW	`list_tier0_gateways`, `get_tier0_gateway`, `get_tier0_bgp_neighbors`, `get_tier0_route_table`	Read
Tier-1 GW	`list_tier1_gateways`, `get_tier1_gateway`, `create_tier1_gateway`, `update_tier1_gateway`, `delete_tier1_gateway`, `get_tier1_route_table`	Read/Write
NAT	`list_nat_rules`, `get_nat_rule`, `create_nat_rule`, `update_nat_rule`, `delete_nat_rule`	Read/Write
Static Routes	`list_static_routes`, `create_static_route`, `delete_static_route`	Read/Write
IP Pools	`list_ip_pools`, `get_ip_pool_allocations`, `create_ip_pool`, `create_ip_pool_subnet`	Read/Write
Health	`get_nsx_alarms`, `get_transport_node_status`, `get_edge_cluster_status`, `get_manager_cluster_status`	Read
Troubleshoot	`get_logical_port_status`, `find_vm_segment`	Read

CLI

# Segments
vmware-nsx segment list
vmware-nsx segment get app-web-seg
vmware-nsx segment create app-web-seg --gateway app-t1 --subnet 10.10.1.1/24 --transport-zone tz-overlay
vmware-nsx segment delete app-web-seg

# Gateways
vmware-nsx gateway list-t0
vmware-nsx gateway list-t1
vmware-nsx gateway create-t1 app-t1 --edge-cluster edge-cluster-01 --tier0 tier0-gw
vmware-nsx gateway bgp-neighbors tier0-gw
vmware-nsx gateway routes-t1 app-t1

# NAT
vmware-nsx nat list app-t1
vmware-nsx nat create app-t1 --action SNAT --source 10.10.1.0/24 --translated 172.16.0.10
vmware-nsx nat delete app-t1 rule-01

# Static Routes
vmware-nsx route list app-t1
vmware-nsx route create app-t1 --network 192.168.100.0/24 --next-hop 10.10.1.254

# IP Pools
vmware-nsx ippool list
vmware-nsx ippool create tep-pool
vmware-nsx ippool add-subnet tep-pool --start 192.168.100.10 --end 192.168.100.50 --cidr 192.168.100.0/24

# Health & Troubleshooting
vmware-nsx health alarms
vmware-nsx health transport-nodes
vmware-nsx health manager-status
vmware-nsx troubleshoot vm-segment my-vm-01

# Diagnostics
vmware-nsx doctor

MCP Server

# Run directly
uvx --from vmware-nsx-mgmt vmware-nsx-mcp

# Or via Docker
docker compose up -d

Agent Configuration

Add to your AI agent's MCP config:

{
  "mcpServers": {
    "vmware-nsx": {
      "command": "vmware-nsx-mcp",
      "env": {
        "VMWARE_NSX_CONFIG": "~/.vmware-nsx/config.yaml"
      }
    }
  }
}

More agent config templates (Claude Code, Cursor, Goose, Continue, etc.) in examples/mcp-configs/.

Version Compatibility

NSX Version	Support	Notes
NSX 4.x	Full	Latest Policy API, all features
NSX-T 3.2	Full	All features work
NSX-T 3.1	Full	Minor route table format differences
NSX-T 3.0	Compatible	IP pool subnet API introduced here
NSX-T 2.5	Limited	Policy API incomplete; some tools may fail
NSX-V (6.x)	Not supported	Different API (SOAP-based)

VCF Compatibility

VCF Version	Bundled NSX	Support
VCF 5.x	NSX 4.x	Full
VCF 4.3-4.5	NSX-T 3.1-3.2	Full

Safety

Feature	Description
Read-heavy	18/31 tools are read-only
Double confirmation	CLI write commands require two prompts
Dry-run mode	All write commands support `--dry-run` preview
Dependency checks	Delete operations validate no connected resources
Input validation	CIDR, IP, VLAN IDs, gateway existence validated
Audit logging	All operations logged to `~/.vmware-nsx/audit.log`
No firewall ops	Cannot create/modify DFW rules or security groups
Credential safety	Passwords only from environment variables
Prompt injection defense	NSX object names sanitized before output

Troubleshooting

Problem	Cause & Fix
"Segment not found"	Policy API uses segment `id`, not `display_name`. Run `segment list` to get the exact ID.
NAT creation fails "gateway not found"	NAT requires a Tier-1 (or Tier-0) gateway. Verify with `gateway list-t1`. Gateway must have an edge cluster.
BGP neighbor stuck in Connect/Active	Peer unreachable, ASN mismatch, TCP 179 blocked, or MD5 password mismatch.
Transport node "degraded"	TEP unreachable (check MTU >= 1600), NTP sync issues, or host switch config mismatch.
"Password not found"	Variable naming: `VMWARE_<TARGET_UPPER>_PASSWORD` (hyphens to underscores). Check `~/.vmware-nsx/.env`.
Connection timeout	Use `vmware-nsx doctor --skip-auth` to bypass auth checks on high-latency networks.

License

MIT

vmware-nsx