• Tech Dev NotesTech Dev Notes
Apps
  • Lookup
  • Compare
Market movement
  • Charts
  • Rankings
Visual proof
  • Screens
  • Store listings
  • Icons
Stacks and releases
  • Tech stacks
  • Tool releases
  • Developers
More
  • X feature flags
  • Grokipedia
  • Blog
  • Follow on X
Skip to content

© 2026 Tech Dev Notes

RSSAboutAPIPrivacyTermsSitemap@techdevnotes
Claude Code

Anthropic · CLI

Claude Code 2.1.191

2.1.190→2.1.191·June 24, 2026 at 11:32 AM UTC

Patch release with refinements to built-in prompts, tool output schemas, and internal feature tracking.

Changelog

  • [changed] Updated GrepOutput schema to report totalMatches and countIsComplete so callers can distinguish exact counts from truncated lower bounds.
  • [changed] Extended notebook cell edit payloads with an optional old_source field to support relative diff rendering without re-reading the file.

Models & prompts

  • Adjusted plan-mode instructions to reinforce that edits, non-readonly tools, and config changes remain disallowed.
  • Refined focus-mode guidance so the final message is the only visible output when the setting is active.
  • Updated context-management and memory-handling language to clarify how summaries, ambient context, and stale memories are treated.
  • Tweaked permission-rejection and interruption messages for consistency when a tool use is denied or a session is paused by the user.
  • Revised several task-list and coordinator prompts to reduce redundant narration and improve hand-off clarity.

Under the hood

  • Added /api/claude_code/discovery/team_usage backend route.
  • Introduced 29 new internal Statsig gates and retired 11 older ones, covering areas such as reactive compaction, long-context surveys, MCP OAuth flows, and team discovery.

Upgrade notes

No manual steps required.

content/

Browse captured content/

Same tree as claude-code/latest/content for this version. Open the full browser for sidebar navigation between docs and other files.

Open content/ browser →

8 listed · 8 in tree

content/ browserNavigate docs, prompts, and root filesFolder index plus per-file pages with prev/next and a full file sidebar.
README.mdDocs2 KBpackage.jsonMetadata1.4 KBmanifest.jsonMetadata1.4 KBversion.jsonMetadata172 Bcli-wrapper.cjsCJS4.8 KBinstall.cjsCJS7 KBsdk-tools.d.tsTS133 KBLICENSE.mdDocs147 B
Older release← 2.1.190Newer release→ 2.1.193
All Claude Code releases →