Claude Code Changelogs Recent Archive Source-level · unofficial Updates
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Claude Code · Source-level changelog

Version 2.1.123

This is a minimal patch release from v2.1.122 with 100.0% structural similarity. The only behavioral change is a minor internal refactoring that narrows the scope of the CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS environment variable: certain API betas are now always enabled for first-party provider users regardless of that setting.

Package @anthropic-ai/claude-code Diff v2.1.122 → v2.1.123
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Features & Changes
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Bug Fixes
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In Development
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Env Vars / Flags

Changes

1 item

Reduced scope of CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS for certain API betas #

The internal function that checks whether a user is on a first-party provider (Anthropic direct, Anthropic AWS, or Foundry) was split into two: a pure provider check and a combined provider-plus-env-var check. Two code paths were updated to use the provider-only check, meaning:

  • One specific SDK beta flag (used in API request construction) is now always included for first-party provider sessions, even when CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1 is set.
  • The SDK beta filter function, which decides whether to pass all beta strings through or restrict to a known set, now passes all betas for first-party providers regardless of the env var.

Other uses of CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS (e.g., gating thinking summaries, context management beta, tool schema betas) remain unchanged and continue to respect the environment variable.

Evidence

Provider check refactoring — an8() at line ~148770 no longer includes CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS; new bp() at line ~148774 preserves the old combined behavior for other call sites (search for "CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS")