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Notifications for Tool List Changes

HasMCP implements the official Model Context Protocol (MCP) server-side event specification to ensure your Desktop LLMs and automated Agents are always perfectly synchronized with your actual backend capabilities.

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The Mechanism

The continuous coordination is achieved via the notifications/tools/list_changed JSON-RPC method.
  1. Persistent Connection: During an active session, Claude Desktop maintains a persistent streaming SSE (MCP Streamable HTTP) connection directly to your configured HasMCP Node.
  2. The Event Dispatch: When an administrator adds, modifies, or deletes a Provider Tool inside the HasMCP dashboard, the backend cluster detects the modification to the master schema.
  3. The Notification: HasMCP immediately broadcasts a server-to-client notification down the open SSE (MCP Streamable HTTP) stream:
{
 "jsonrpc": "2.0",
 "method": "notifications/tools/list_changed"
}
  1. Client-Side Refresh: Upon receiving this passive notification, compliant MCP clients (like Claude Desktop or Cursor) will autonomously fire a tools/list request completely in the background to fetch the updated taxonomy.
The user typing in the chat window experiences zero interruption. The tool palette silently upgrades itself in real-time.