EVE-NG MCP Server

Instructions

Implementation Reference

• eveng_mcp_server/tools/node_management.py:480-519 (handler)

  The main handler function for the wipe_node MCP tool. It validates input using NodeControlArgs, checks connection, calls the EVENGClientWrapper.wipe_node helper, and formats the response as TextContent.

  @mcp.tool()
  async def wipe_node(arguments: NodeControlArgs) -> list[TextContent]:
      """
      Wipe a specific node (reset to factory state).
  
      This tool wipes a node, deleting all user configuration including
      startup-config, VLANs, and other settings. The next start will
      rebuild the node from the selected image.
      """
      try:
          logger.info(f"Wiping node {arguments.node_id} in {arguments.lab_path}")
  
          if not eveng_client.is_connected:
              return [TextContent(
                  type="text",
                  text="Not connected to EVE-NG server. Use connect_eveng_server tool first."
              )]
  
          # Wipe node
          result = await eveng_client.wipe_node(arguments.lab_path, arguments.node_id)
  
          if result.get('status') == 'success':
              return [TextContent(
                  type="text",
                  text=f"Successfully wiped node {arguments.node_id} in {arguments.lab_path}\n\n"
                       f"⚠️  All user configuration has been deleted. The node has been reset to factory state.\n"
                       f"The next start will rebuild the node from the selected image."
              )]
          else:
              return [TextContent(
                  type="text",
                  text=f"Failed to wipe node: {result.get('message', 'Unknown error')}"
              )]
  
      except Exception as e:
          logger.error(f"Failed to wipe node: {e}")
          return [TextContent(
              type="text",
              text=f"Failed to wipe node: {str(e)}"
          )]

• eveng_mcp_server/tools/node_management.py:53-57 (schema)

  Pydantic schema defining the input arguments for the wipe_node tool (shared with other node control tools like start_node, stop_node).

  class NodeControlArgs(BaseModel):
      """Arguments for node control operations."""
      lab_path: str = Field(description="Full path to the lab (e.g., /lab_name.unl)")
      node_id: str = Field(description="Node ID to control")

• eveng_mcp_server/tools/__init__.py:24-25 (registration)

  Registration call for node management tools, which includes the wipe_node tool via the register_node_tools function.

  # Node management tools
  register_node_tools(mcp, eveng_client)

• eveng_mcp_server/core/eveng_client.py:451-461 (helper)

  Helper method in EVENGClientWrapper that wraps the underlying EVE-NG API call to wipe_node, with connection management and error handling.

  async def wipe_node(self, lab_path: str, node_id: str) -> Dict[str, Any]:
      """Wipe a specific node (reset to factory state)."""
      await self.ensure_connected()
  
      try:
          result = await asyncio.to_thread(self.api.wipe_node, lab_path, int(node_id))
          self.logger.info("Wiped node", lab_path=lab_path, node_id=node_id)
          return result
      except Exception as e:
          self.logger.error("Failed to wipe node", **log_error(e, {"lab_path": lab_path, "node_id": node_id}))
          raise EVENGAPIError(f"Failed to wipe node: {str(e)}")