But that progress doesn't have to be normalized to [0, 1].
We have examples showing this, and the schema doesn't bound these numbers, so I think this is OK.
Merge pull request #4 from modelcontextprotocol/zack-lee/specs-2
Merge pull request modelcontextprotocol#4 from markdroth/mrtr-sep
remove UC3, defer multi-token management to follow-on SEP
But that progress doesn't have to be normalized to [0, 1].