# delete_variable

Hapus variable dari n8n secara permanen.

Agent View of the PolicyLayer registry record for `delete_variable`. HTML page: https://policylayer.com/tools/andhit-r-n8n-mcp/delete-variable

## Facts

- Tool: `delete_variable`
- Server: n8n MCP Server (`andhit-r/n8n-mcp`) — https://policylayer.com/tools/andhit-r-n8n-mcp.md
- Homepage: https://github.com/andhit-r/n8n-mcp
- 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": "delete_variable",
    "arguments": {}
  }
}
```

## Why delete_variable is rated Critical

This tool permanently deletes variables in n8n, which cannot be undone. Variables may store configuration, secrets, or state critical to workflow operation. Permanent deletion qualifies as Destructive. Severity is high because loss of variables could break multiple workflows or expose security issues if credentials were stored, though the blast radius is contained to the n8n instance itself.

From the tool's own definition: "Tool description states 'Hapus variable dari n8n secara permanen' (Delete variable from n8n permanently). The word 'permanen' (permanent) and the tool name 'delete_variable' indicate irreversible deletion."

## Use case

AI agents call delete_variable to permanently remove resources in n8n 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 n8n MCP Server:

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

## Other tools on n8n MCP Server (21)

- `delete_credential` — Destructive — https://policylayer.com/tools/andhit-r-n8n-mcp/delete-credential.md
- `delete_execution` — Destructive — https://policylayer.com/tools/andhit-r-n8n-mcp/delete-execution.md
- `delete_tag` — Destructive — https://policylayer.com/tools/andhit-r-n8n-mcp/delete-tag.md
- `delete_workflow` — Destructive — https://policylayer.com/tools/andhit-r-n8n-mcp/delete-workflow.md
- `activate_workflow` — Execute — https://policylayer.com/tools/andhit-r-n8n-mcp/activate-workflow.md
- `deactivate_workflow` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/deactivate-workflow.md
- `get_audit_log` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/get-audit-log.md
- `get_credential` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/get-credential.md
- `get_execution` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/get-execution.md
- `get_workflow` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/get-workflow.md
- `list_credentials` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/list-credentials.md
- `list_executions` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/list-executions.md
- `list_tags` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/list-tags.md
- `list_variables` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/list-variables.md
- `list_workflows` — Read — https://policylayer.com/tools/andhit-r-n8n-mcp/list-workflows.md
- `create_credential` — Write — https://policylayer.com/tools/andhit-r-n8n-mcp/create-credential.md
- `create_tag` — Write — https://policylayer.com/tools/andhit-r-n8n-mcp/create-tag.md
- `create_variable` — Write — https://policylayer.com/tools/andhit-r-n8n-mcp/create-variable.md
- `create_workflow` — Write — https://policylayer.com/tools/andhit-r-n8n-mcp/create-workflow.md
- `update_tag` — Write — https://policylayer.com/tools/andhit-r-n8n-mcp/update-tag.md
- `update_workflow` — Write — https://policylayer.com/tools/andhit-r-n8n-mcp/update-workflow.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=andhit-r-n8n-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/andhit-r-n8n-mcp