Home / Servers / Hetzner Cloud API / set_firewall_rules

Set Rules

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

Set Rules Set the rules of a Firewall. Overwrites the existing rules with the given ones. Pass an empty array to remove all rules. Rules are limited to 50 entries per Firewall and 500 effective rules. [POST /firewalls/{id}/actions/set_rules]

Name on the gateway: hetzner_api__set_firewall_rules · may change things.

Parameters

NameTypeDescription
id requiredintegerID of the Firewall.
rules requiredarrayArray of rules. Rules are limited to 50 entries per Firewall and 500 effective…

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__set_firewall_rules",
  "arguments": {
    "id": 0,
    "rules": []
  }
}

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 set rules tool with id set to ….

More from Hetzner Cloud API