Home / Servers / Hetzner Cloud API / apply_firewall_to_resources

Apply to Resources

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

Apply to Resources Applies a Firewall to multiple resources. Supported resources: - Servers (with a public network interface) - Label Selectors A Server can be applied to a maximum of 5 Firewalls. This limit applies… [POST /firewalls/{id}/actions/apply_to_resources]

Name on the gateway: hetzner_api__apply_firewall_to_resources · may change things.

Parameters

NameTypeDescription
id requiredintegerID of the Firewall.
apply_to requiredarrayResources to apply the Firewall to. Extends existing resources.

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:

call_tool arguments
{
  "name": "hetzner_api__apply_firewall_to_resources",
  "arguments": {
    "id": 0,
    "apply_to": []
  }
}

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"

Try asking

Use the apply to resources tool with id set to ….

More from Hetzner Cloud API