A new entry from Claude's official release notes, summarized for readers. Check the original text at the bottom for the exact wording.
Summary
Fixed an MCP OAuth sign-in failure caused by a redirect URI mismatch on servers that use a pre-registered OAuth client, such as Slack.
Why it matters
Connecting Claude Code to services like Slack over MCP works again where sign-in previously failed.
This summary was written from the original entry; verify details in the source below.
What changed (original text)
- Fixed MCP OAuth sign-in failing with a redirect URI mismatch for servers that use a pre-registered OAuth client, such as Slack
Source: Claude Code changelog (view original)