The current MCP specification (2026-07-28) changes how AI assistants such as Claude, ChatGPT, Cursor and VS Code identify themselves when they connect. Instead of registering with each service, an assistant now points to a document it publishes about itself. Sure Send supports this method, and the older self-registration keeps working, so existing connections are unaffected and newer assistants can connect without extra setup.
On the approval screen, an assistant that identified itself this way is labelled Unverified application, like one that registered itself. The screen also shows the website that published the assistant’s details and where you will be sent after approving. If that address is on your own computer, the screen warns you to continue only if you started the connection there.
If an assistant can only work with a fixed client ID, Sure Send support can register one for it. The MCP help page covers all three options.