delete-variable
Remove a specific variable by its ID in MCP- N8N, ensuring precise data management. Requires n8n Enterprise license and variable ID from list-variables. Inputs must be single-line JSON.
Instructions
Delete a variable by ID. NOTE: Requires n8n Enterprise license with variable management features enabled. Use after list-variables to get the ID of the variable to delete. This action cannot be undone. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| clientId | Yes | ||
| id | Yes |
Implementation Reference
- src/index.ts:1457-1487 (handler)Handler for the 'delete-variable' tool in the CallToolRequestSchema switch statement. Validates client existence, calls the N8nClient.deleteVariable method, and returns success or error response.
case "delete-variable": { const { clientId, id } = args as { clientId: string; id: string }; const client = clients.get(clientId); if (!client) { return { content: [{ type: "text", text: "Client not initialized. Please run init-n8n first.", }], isError: true }; } try { await client.deleteVariable(id); return { content: [{ type: "text", text: `Successfully deleted variable with ID: ${id}`, }] }; } catch (error) { return { content: [{ type: "text", text: error instanceof Error ? error.message : "Unknown error occurred", }], isError: true }; } } - src/index.ts:262-266 (helper)Helper method in N8nClient class that performs the actual API DELETE request to remove a variable by ID.
async deleteVariable(id: string): Promise<void> { return this.makeRequest<void>(`/variables/${id}`, { method: 'DELETE', }); - src/index.ts:639-650 (registration)Tool definition registered in the ListToolsRequestSchema handler's tools array, specifying name, description, and input schema.
{ name: "delete-variable", description: "Delete a variable by ID. NOTE: Requires n8n Enterprise license with variable management features enabled. Use after list-variables to get the ID of the variable to delete. This action cannot be undone. IMPORTANT: Arguments must be provided as compact, single-line JSON without whitespace or newlines.", inputSchema: { type: "object", properties: { clientId: { type: "string" }, id: { type: "string" } }, required: ["clientId", "id"] } }, - src/index.ts:642-649 (schema)Input schema definition for the delete-variable tool, defining required parameters clientId and id.
inputSchema: { type: "object", properties: { clientId: { type: "string" }, id: { type: "string" } }, required: ["clientId", "id"] }