# MCP notifications

> Tag 9: the client subscribes to the notifications of the MCP server of the container; the server opens the proxy’s /tool/notifications and relays one channel response per notification, an error last when the server could not be reached, and the channel response finish.

Canonical: https://provider.diverge.network/2.3.0/endpoints/containers-tools-connect/client/mcp-notifications/
Specification revision: 2.3.0

The client opens this channel to receive the notifications of the MCP
server of the container. The server opens
[`/tool/notifications`](/2.3.0/proxy/tool/notifications/) on the proxy and
relays every notification the proxy sends.

- **The request.** The tag byte `9` and nothing more.
  [Request](/2.3.0/endpoints/containers-tools-connect/client/mcp-notifications/request/) states its
  form.
- **The response.** One channel response per notification, an error
  last when the proxy sent one, and the channel response finish when
  the proxy closes. [Response](/2.3.0/endpoints/containers-tools-connect/client/mcp-notifications/response/)
  states the sequence.
- **From the opening on.** The server relays no notification that
  the proxy sent before this channel's `/tool/notifications` was
  opened.