Home / Servers / Hetzner Cloud API / add_network_subnet
Add a subnet to a Network
An MCP tool from the Hetzner Cloud API server, hosted on mcp.hjlabs.in.
Add a subnet to a Network Adds a new subnet to the Network. If the subnet ip_range is not provided, the first available /24 IP range will be used. If a change is currently being performed on this Network, a error response… [POST /networks/{id}/actions/add_subnet]
Name on the gateway: hetzner_api__add_network_subnet · may change things.
Parameters
| Name | Type | Description |
|---|---|---|
id required | integer | ID of the Network. |
type required | cloud | server | vswitch | Type of subnet. |
ip_range | string | IP range of the subnet. Uses CIDR notation. Must be a subnet of the parent… |
network_zone required | string | Name of the Network Zone. The Location contains the network_zone it belongs to. |
vswitch_id | integer | ID of the robot vSwitch. Must be supplied if the subnet is of type vswitch. |
How to call it
Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:
{
"name": "hetzner_api__add_network_subnet",
"arguments": {
"id": 0,
"type": "…",
"network_zone": "…"
}
}Or connect the Hetzner Cloud API server directly, which lists 178 tools including this one:
claude mcp add --transport http hj-hetzner-api https://mcp.hjlabs.in/mcp/hetzner-api \
--header "Authorization: Bearer YOUR_API_KEY"Try asking
Use the add a subnet to a network tool with id set to ….