# file_write

Write content to a file on the server.

Agent View of the PolicyLayer registry record for `file_write`. HTML page: https://policylayer.com/tools/aapanel-mcp/file-write

## Facts

- Tool: `file_write`
- Server: Aapanel (`nipunanirmal/aapanel-mcp`) — https://policylayer.com/tools/aapanel-mcp.md
- Homepage: https://github.com/nipunanirmal/aapanel-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "file_write",
    "arguments": {}
  }
}
```

## Why file_write is rated Medium

This tool creates or modifies file contents on a server, which is a reversible write operation. Severity is high because unauthorized file writes on a server can compromise application behavior, inject malicious code into web applications, overwrite configuration files, or cause service disruption—all without being destructive (files can theoretically be recovered or reverted).

From the tool's own definition: "Tool name 'file_write' and description explicitly states 'Write content to a file on the server.' This is a clear data modification operation."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Aapanel (281)

- `backup_delete` — Destructive — https://policylayer.com/tools/aapanel-mcp/backup-delete.md
- `crontab_delete` — Destructive — https://policylayer.com/tools/aapanel-mcp/crontab-delete.md
- `cve_set_vuln_ignore` — Destructive — https://policylayer.com/tools/aapanel-mcp/cve-set-vuln-ignore.md
- `database_delete` — Destructive — https://policylayer.com/tools/aapanel-mcp/database-delete.md
- `database_delete_backup` — Destructive — https://policylayer.com/tools/aapanel-mcp/database-delete-backup.md
- `docker_image_delete` — Destructive — https://policylayer.com/tools/aapanel-mcp/docker-image-delete.md
- `file_delete` — Destructive — https://policylayer.com/tools/aapanel-mcp/file-delete.md
- `firewall_delete_ip` — Destructive — https://policylayer.com/tools/aapanel-mcp/firewall-delete-ip.md
- `firewall_delete_port` — Destructive — https://policylayer.com/tools/aapanel-mcp/firewall-delete-port.md
- `ftp_delete` — Destructive — https://policylayer.com/tools/aapanel-mcp/ftp-delete.md
- `harden_clear_temp_login` — Destructive — https://policylayer.com/tools/aapanel-mcp/harden-clear-temp-login.md
- `plugin_uninstall` — Destructive — https://policylayer.com/tools/aapanel-mcp/plugin-uninstall.md
- `project_delete` — Destructive — https://policylayer.com/tools/aapanel-mcp/project-delete.md
- `site_delete` — Destructive — https://policylayer.com/tools/aapanel-mcp/site-delete.md
- `site_delete_domain` — Destructive — https://policylayer.com/tools/aapanel-mcp/site-delete-domain.md
- `soft_uninstall` — Destructive — https://policylayer.com/tools/aapanel-mcp/soft-uninstall.md
- `ssl_delete_cert` — Destructive — https://policylayer.com/tools/aapanel-mcp/ssl-delete-cert.md
- `system_clear_all_cache` — Destructive — https://policylayer.com/tools/aapanel-mcp/system-clear-all-cache.md
- `system_clear_all_logs` — Destructive — https://policylayer.com/tools/aapanel-mcp/system-clear-all-logs.md
- `system_clear_cache` — Destructive — https://policylayer.com/tools/aapanel-mcp/system-clear-cache.md
- `system_clear_old_sessions` — Destructive — https://policylayer.com/tools/aapanel-mcp/system-clear-old-sessions.md
- `system_clear_panel_logs` — Destructive — https://policylayer.com/tools/aapanel-mcp/system-clear-panel-logs.md
- `system_clear_site_logs` — Destructive — https://policylayer.com/tools/aapanel-mcp/system-clear-site-logs.md
- `tamper_remove_file_deny` — Destructive — https://policylayer.com/tools/aapanel-mcp/tamper-remove-file-deny.md
- `task_remove` — Destructive — https://policylayer.com/tools/aapanel-mcp/task-remove.md
- `waf_delete_rule` — Destructive — https://policylayer.com/tools/aapanel-mcp/waf-delete-rule.md
- `abnormal_check_all` — Execute — https://policylayer.com/tools/aapanel-mcp/abnormal-check-all.md
- `crontab_start` — Execute — https://policylayer.com/tools/aapanel-mcp/crontab-start.md
- `deployment_install` — Execute — https://policylayer.com/tools/aapanel-mcp/deployment-install.md
- `docker_container_restart` — Execute — https://policylayer.com/tools/aapanel-mcp/docker-container-restart.md
- …and 251 more: https://policylayer.com/tools/aapanel-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`

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