# VPS_createFirewallRuleV1

Create new firewall rule for a specified firewall. By default, the firewall drops all incoming traffic, which means you must add accept rules for all ports you want to use. Any virtual machine that has this firewall activated will lose sync with the firewall and will have to be synced again manually. Use this endpoint to add new security rules to firewalls.

Agent View of the PolicyLayer registry record for `VPS_createFirewallRuleV1`. HTML page: https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/vps-createfirewallrulev1

## Facts

- Tool: `VPS_createFirewallRuleV1`
- Server: Hostinger Api (`hostinger-api-mcp`) — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp.md
- Install: `npx -y hostinger-api-mcp`
- Homepage: https://github.com/hostinger/api-mcp-server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 5 (5 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `port` | string | yes | Port or port range, ex: 1024:2048 |
| `source` | string | yes | source parameter |
| `protocol` | string | yes | protocol parameter |
| `firewallId` | integer | yes | Firewall ID |
| `source_detail` | string | yes | IP range, CIDR, single IP or `any` |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "VPS_createFirewallRuleV1",
    "arguments": {
      "port": "<port>",
      "source": "<source>",
      "protocol": "<protocol>",
      "firewallId": 0,
      "source_detail": "<source_detail>"
    }
  }
}
```

## Why VPS_createFirewallRuleV1 is rated Medium

This tool creates (writes) a new firewall rule, which is reversible but has significant security implications. Misconfigured firewall rules could expose services to the internet or block legitimate traffic, and it causes VMs to lose sync requiring manual intervention.

From the tool's own definition: "Create new firewall rule for a specified firewall... Any virtual machine that has this firewall activated will lose sync with the firewall and will have to be synced again manually."

## Use case

AI agents use VPS_createFirewallRuleV1 to create or update resources in Hostinger Api, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hostinger Api environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Hostinger Api:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "VPS_createFirewallRuleV1": {
      "limits": [
        {
          "counter": "vps_createfirewallrulev1_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Hostinger Api (257)

- `agency-hosting_clearAgencyPlanWebsiteCacheV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/agency-hosting-clearagencyplanwebsitecachev1.md
- `agency-hosting_deleteAgencyPlanWebsiteCronJobV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/agency-hosting-deleteagencyplanwebsitecronjobv1.md
- `agency-hosting_deleteAgencyPlanWebsiteDatabaseUserV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/agency-hosting-deleteagencyplanwebsitedatabaseuserv1.md
- `agency-hosting_deleteAgencyPlanWebsiteDatabaseV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/agency-hosting-deleteagencyplanwebsitedatabasev1.md
- `agency-hosting_deleteAgencyPlanWebsiteV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/agency-hosting-deleteagencyplanwebsitev1.md
- `agencyHosting_deployNodeStaticWebsite` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/agencyhosting-deploynodestaticwebsite.md
- `agencyHosting_deployPhpApplication` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/agencyhosting-deployphpapplication.md
- `billing_deletePaymentMethodV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/billing-deletepaymentmethodv1.md
- `DNS_deleteDNSRecordsV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/dns-deletednsrecordsv1.md
- `DNS_resetDNSRecordsV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/dns-resetdnsrecordsv1.md
- `domains_deleteDomainForwardingV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/domains-deletedomainforwardingv1.md
- `domains_deleteWHOISProfileV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/domains-deletewhoisprofilev1.md
- `ecommerce_deleteStoreV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/ecommerce-deletestorev1.md
- `hosting_clearWebsiteCacheV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-clearwebsitecachev1.md
- `hosting_deleteAccountCronJobV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-deleteaccountcronjobv1.md
- `hosting_deleteAccountDatabaseRemoteConnectionV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-deleteaccountdatabaseremoteconnectionv1.md
- `hosting_deleteAccountDatabaseV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-deleteaccountdatabasev1.md
- `hosting_deleteWebsiteParkedDomainV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-deletewebsiteparkeddomainv1.md
- `hosting_deleteWebsiteSubdomainV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-deletewebsitesubdomainv1.md
- `hosting_deleteWebsiteV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-deletewebsitev1.md
- `hosting_deleteWordPressInstallationV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-deletewordpressinstallationv1.md
- `hosting_uninstallWordPressPluginsV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-uninstallwordpresspluginsv1.md
- `hosting_uninstallWordPressThemesV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-uninstallwordpressthemesv1.md
- `mail_deleteMailboxV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/mail-deletemailboxv1.md
- `mail_deleteWebhookV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/mail-deletewebhookv1.md
- `mail_revokeAPITokenV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/mail-revokeapitokenv1.md
- `reach_deleteAContactV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/reach-deleteacontactv1.md
- `VPS_deleteFirewallRuleV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/vps-deletefirewallrulev1.md
- `VPS_deleteFirewallV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/vps-deletefirewallv1.md
- `VPS_deletePostInstallScriptV1` — Destructive — https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/vps-deletepostinstallscriptv1.md
- …and 227 more: https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-hostinger-hostinger-api-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-hostinger-hostinger-api-mcp