Huge congrats to the folks behind this at Okta, A\, Microsoft, Figma, Linear, etc...

For the MCP nay-sayers - don't worry there's something here for you too :)

This is powered by a new token format called an ID-JAG - https://datatracker.ietf.org/doc/draft-ietf-oauth-identity-a... - and isn't MCP specific at all. ID-JAGs can be used for safe and secure data sharing anywhere where data is shared between applications that use the same SSO provider.