# mittwald_database_mysql_user_delete

Delete an existing MySQL user.

Agent View of the PolicyLayer registry record for `mittwald_database_mysql_user_delete`. HTML page: https://policylayer.com/tools/mittwald-mcp-server/mittwald-database-mysql-user-delete

## Facts

- Tool: `mittwald_database_mysql_user_delete`
- Server: Mittwald MCP Server (`mittwald/mcp-server`) — https://policylayer.com/tools/mittwald-mcp-server.md
- Homepage: https://github.com/mittwald/mcp-server
- Risk category: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

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

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

## Why mittwald_database_mysql_user_delete is rated Critical

The tool permanently removes a MySQL user, which is an irreversible operation that cannot be recovered automatically. While not a data deletion itself, account deletion has blast radius: an AI agent misusing this could lock legitimate users out of databases or cause authentication failures in production systems. This is more severe than Write (reversible modifications) and qualifies as Destructive.

From the tool's own definition: "Tool name contains 'delete' and description states 'Delete an existing MySQL user' — this irreversibly removes a user account and cannot be undone without manual restoration."

## Use case

AI agents call mittwald_database_mysql_user_delete to permanently remove resources in Mittwald MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

## Recommended policy (PolicyLayer)

Verdict: **Hidden**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mittwald MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "mittwald_database_mysql_user_delete"
  ]
}
```

## Other tools on Mittwald MCP Server (171)

- `mittwald_app_uninstall` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-uninstall.md
- `mittwald_backup_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-backup-delete.md
- `mittwald_backup_schedule_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-backup-schedule-delete.md
- `mittwald_container_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-delete.md
- `mittwald_context_reset_session` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-context-reset-session.md
- `mittwald_cronjob_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-cronjob-delete.md
- `mittwald_database_mysql_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-database-mysql-delete.md
- `mittwald_domain_virtualhost_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-domain-virtualhost-delete.md
- `mittwald_extension_uninstall` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-extension-uninstall.md
- `mittwald_mail_address_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-mail-address-delete.md
- `mittwald_mail_deliverybox_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-mail-deliverybox-delete.md
- `mittwald_org_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-org-delete.md
- `mittwald_org_membership_revoke` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-org-membership-revoke.md
- `mittwald_project_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-project-delete.md
- `mittwald_registry_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-registry-delete.md
- `mittwald_sftp_user_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-sftp-user-delete.md
- `mittwald_ssh_user_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-ssh-user-delete.md
- `mittwald_stack_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-stack-delete.md
- `mittwald_user_api_token_revoke` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-user-api-token-revoke.md
- `mittwald_user_ssh_key_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-user-ssh-key-delete.md
- `mittwald_volume_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-volume-delete.md
- `mittwald_app_install_wordpress` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-install-wordpress.md
- `mittwald_app_open` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-open.md
- `mittwald_app_ssh` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-ssh.md
- `mittwald_app_upgrade` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-upgrade.md
- `mittwald_container_recreate` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-recreate.md
- `mittwald_container_restart` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-restart.md
- `mittwald_container_run` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-run.md
- `mittwald_container_start` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-start.md
- `mittwald_container_stop` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-stop.md
- …and 141 more: https://policylayer.com/tools/mittwald-mcp-server.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=mittwald-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/mittwald-mcp-server