v2.1.231

Source: Anthropic Claude Code Date: 2026-08-13 URL: https://github.com/anthropics/claude-code/releases/tag/v2.1.231

Summary

Claude Code v2.1.231 is a single-fix patch release: it corrects MCP OAuth sign-in failing with a redirect URI mismatch for servers using a pre-registered OAuth client, such as Slack.

Implications

Minor maintenance release, not a new enforcement or capability move — feeds agent-execution-boundary only in the loose sense that it’s infrastructure hardening for how Claude Code authenticates to MCP servers (an integration surface, not the read/write/destructive guard work covered in recent daily reports). No thread-shifting signal here.