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v2.1.222 Claude Code Release Notes

Aug 4, 2026Source: Anthropic changelog
Claude's Analysisby Sonnet 4.6
Full Analysis

Security pass fixes worktree isolation gaps (destructive git commands) and hook bypasses in background tasks; Remote Control auto-start now needs /config, ultraplan removed.

Changes
21
Total Changes (vs Average)
1.8×
Version Type
Patch
Release Focus
Bug Fixes
Day Since Prior Release
1
Release # This Month
#2 of 2
Bug Fix Ratio
76%
Post-Release Edits
—
Change Category
Ecosystem Impact
MCP appeared in 8 of the last 10 releases; this ships just 1 day after v2.1.221's 39-item release, continuing a run of large bug-fix passes.
Key Themes
3Isolation & permission integrity|5Network & crash reliability|11Usage tracking, model fallback & polish|2Breaking changes: Remote Control & ultraplan
May Help If You've Noticed
Destructive git commands ran even though you were in an isolated worktree session
Background tasks like summarization or renaming ignored your permission restrictions
Startup hung and failed when connecting through a company proxy
You saw "connection closed" errors on responses that had actually finished
/usage stats showed MCP servers responsible for costs they didn't cause

Changes in Claude Code v2.1.222

Improved3 changes

  • •Improved auto mode safety: messages sent to other agent sessions via SendMessage are now evaluated by the permission classifier before dispatch
  • •Improved the refusal when Claude tries to invoke a skill with disable-model-invocation: Claude is now told to ask you to run the skill instead of replicating its workflow
  • •Improved the /diff view, the Remote Control workspace diff, and file-edit diffs in Claude Code on the web sessions to use raw git blob content, ignoring workspace-configured diff drivers and textconv

Fixed16 changes

  • •Fixed worktree-isolated sessions and their subagents being able to run destructive git commands against the main checkout; isolation now applies to file edits and Bash in every session type
  • •Fixed PreToolUse auto-allow hooks bypassing tool restrictions in background agent tasks (summaries, compaction, renames)
  • •Fixed /usage-credits on Team and Enterprise showing "you've already sent a usage credit request" for members whose earlier request was dismissed, blocking them from sending a new one
  • •Fixed the startup connectivity check hanging and then failing behind an HTTPS proxy; it now uses the same proxy-aware transport as API requests and times out with a clear message
  • •Fixed "Connection closed mid-response" errors being reported on responses that had actually completed
  • •Fixed /usage overattributing usage to MCP servers: a server's share now reflects only the requests that actually consumed its tool results, instead of every turn after any call to it
  • •Fixed sessions not linking to pull requests created after the branch was pushed, including through the GitHub REST API
  • •Fixed org-restricted model: opus-style subagent and teammate family aliases dropping to the parent model instead of stepping down to the newest org-allowed model in the family
  • •Fixed stream idle timeout firing on custom ANTHROPIC_BASE_URL gateways despite server keep-alive pings arriving on the wire
  • •Fixed claude.ai connectors being falsely marked as needing authorization when the session token is invalid — they now show a /login hint instead
  • •Fixed tool errors not being displayed for tools no longer available locally, for example after an MCP server is removed
  • •Fixed SendMessage rejecting a long summary — it now truncates instead, so sends no longer fail on a character limit
  • •Fixed the spinner's effort label in a subagent's transcript view showing the session's effort level instead of the subagent's own effort: setting
  • •Fixed rare crashes when a file watcher hit a filesystem error or during file-watcher teardown
  • •Fixed screen readers re-reading the whole input line on every backspace in --ax-screen-reader mode — end-of-line deletions now echo just the deleted characters
  • •Fixed host model-selection keys not taking precedence over a stale on-disk managed-settings.json when CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST is set

Changed1 change

  • •Changed Remote Control auto-start so repo-local settings (.claude/settings.json or .claude/settings.local.json) can no longer turn it on (they can still turn it off); enable it at user scope via /config

Removed1 change

  • •Removed ultraplan feature

← v2.1.221
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