Resize Volume

An MCP tool from the Hetzner Cloud API server, hosted on mcp.hjlabs.in.

Resize Volume Changes the size of a Volume. Note that downsizing a Volume is not possible. [POST /volumes/{id}/actions/resize]

Name on the gateway: hetzner_api__resize_volume · may change things.

Parameters

Name	Type	Description
`id` required	`integer`	ID of the Volume.
`size` required	`number`	New Volume size in GB (must be greater than current size).

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments

{
  "name": "hetzner_api__resize_volume",
  "arguments": {
    "id": 0,
    "size": 0
  }
}

Or connect the Hetzner Cloud API server directly, which lists 178 tools including this one:

Run in your terminal

claude mcp add --transport http hj-hetzner-api https://mcp.hjlabs.in/mcp/hetzner-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Use the resize volume tool with id set to ….