OAuth 2.1
- OAuth 2.1 is a consolidation of OAuth 2.0 that requires PKCE and drops the implicit and password grants.
In short: OAuth 2.1 is a consolidation of OAuth 2.0 that requires PKCE and drops the implicit and password grants. MCP authorization builds on it. This entry uses the term the way our gateway datasheets and spec explainers do. Related terms and pages are linked below, so you can follow the idea through the site.
Related terms
By The Datasheet desk · Reviewed 2026-11-03