Claude Code v2.1.231

Claude Code v2.1.231 was released on .

Summary

Claude Code 2.1.231 fixes a critical OAuth sign-in issue that was blocking connections to services like Slack. Your integrations should now connect smoothly without redirect errors. Check the full release notes to see what else we've improved.

Release Context

  • This was the 185th Claude Code release of 2026 tracked by Havoptic.
  • It shipped 1 day after Claude Code v2.1.229 (August 12, 2026).
  • Claude Code: ships every 2 days — 20 releases in the last month.

Why it matters: MCP OAuth sign-in now works with Slack.

Shipped around the same time

Within 3 days of this release, other AI coding tools also shipped:

Compare Claude Code: vs OpenAI Codex CLI · vs Cursor · vs Gemini CLI · vs Kiro CLI · vs GitHub Copilot CLI · vs Devin Desktop · vs Antigravity CLI

Release Notes

- Fixed MCP OAuth sign-in failing with a redirect URI mismatch for servers that use a pre-registered OAuth client, such as Slack

View original release

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