n8n MCP Server

Instructions

Implementation Reference

• src/tools/tags.ts:127-156 (handler)

  The handler implementation for the n8n_update_tag tool, which uses a PUT request to update an n8n tag by ID.

    server.registerTool(
      'n8n_update_tag',
      {
        title: 'Update n8n Tag',
        description: `Rename an existing tag.
  
  Args:
    - id (string): Tag ID to update
    - name (string): New tag name (max 24 characters)
  
  Returns:
    The updated tag.`,
        inputSchema: UpdateTagSchema,
        annotations: {
          readOnlyHint: false,
          destructiveHint: false,
          idempotentHint: true,
          openWorldHint: false
        }
      },
      async (params: z.infer<typeof UpdateTagSchema>) => {
        const { id, ...updateData } = params;
        const tag = await put<N8nTag>(`/tags/${id}`, updateData);
        
        return {
          content: [{ type: 'text', text: `✅ Tag updated!\n\n${formatTag(tag)}` }],
          structuredContent: tag
        };
      }
    );