# hosting_replaceNode_jsEnvironmentVariablesV1

Replaces the website's Node.js environment variables with the ones provided. This is a full replace: any variable not in the request is deleted, and sending an empty env_vars array deletes every variable. Saving writes the values and restarts the running Node.js process. A restart is enough for apps that read environment variables at process start, such as Express or NestJS. It is not enough for frameworks that bake variables into the build. Next.js standalone is one of those: build-time values (including NEXT_PUBLIC_*) need a fresh build. After this call, use the Start Node.js build endpoint so those apps pick up the new values. The List Node.js environment variables endpoint returns masked values (), so never copy values from it into this request. Always send the full desired set with real values taken from the project .env file or the user prompt.

Agent View of the PolicyLayer registry record for `hosting_replaceNode_jsEnvironmentVariablesV1`. HTML page: https://policylayer.com/tools/io-github-hostinger-hostinger-api-mcp/hosting-replacenode-jsenvironmentvariablesv1

## Facts

- Tool: `hosting_replaceNode_jsEnvironmentVariablesV1`
- 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: 3 (3 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `domain` | string | yes | Domain name |
| `env_vars` | array | yes | Environment variables to set. This is the full desired set: any variable not in this list is deleted, and an empty array deletes every variable. |
| `username` | string | yes | username parameter |

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": "hosting_replaceNode_jsEnvironmentVariablesV1",
    "arguments": {
      "domain": "<domain>",
      "env_vars": [],
      "username": "<username>"
    }
  }
}
```

## Why hosting_replaceNode_jsEnvironmentVariablesV1 is rated Medium

Modifies application configuration and restarts processes; reversible but causes service interruption and potential data loss.

From the tool's own definition: "Replaces environment variables, deletes variables, restarts Node.js process."

Risk signals: Bulk/mass operation — affects multiple targets

## Use case

AI agents use hosting_replaceNode_jsEnvironmentVariablesV1 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": {
    "hosting_replaceNode_jsEnvironmentVariablesV1": {
      "limits": [
        {
          "counter": "hosting_replacenode_jsenvironmentvariablesv1_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

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## 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