Week 17 · April 20–24, 2026

/ultrareview opens as a research preview, automatic session recaps when you return to a terminal, custom color themes you can build and ship in plugins, and a redesigned Claude Code on the web.

Releases v2.1.114 → v2.1.1194 features · April 20–24

/ultrareviewresearch preview

Now in public research preview. Ultrareview runs a fleet of bug-hunting agents in the cloud against your branch or a PR, and findings land back in the CLI or Desktop automatically. Run it before merging critical changes such as auth or data migrations.

<video autoPlay muted loop playsInline className="w-full" src="https://mintcdn.com/claude-code/FTi4SBJ9YRs7d-5X/images/whats-new/ultrareview.mp4?fit=max&auto=format&n=FTi4SBJ9YRs7d-5X&q=85&s=0fb1271365d38f414ad155aeb8edb08e" data-path="images/whats-new/ultrareview.mp4" />

Review the branch you're on:

> /ultrareview

Or point it at a PR:

> /ultrareview 1234

Ultrareview guide

Session recapCLI

Switch focus away from a session and come back to a one-line recap of what happened while you were gone. Helpful for staying in flow while running several Claude sessions at once.

<video autoPlay muted loop playsInline className="w-full" src="https://mintcdn.com/claude-code/FTi4SBJ9YRs7d-5X/images/whats-new/session-recap.mp4?fit=max&auto=format&n=FTi4SBJ9YRs7d-5X&q=85&s=0a8db1470bd0161a47efeb2f322af76f" data-path="images/whats-new/session-recap.mp4" />

Generate a recap on demand, or turn the automatic one off from /config:

> /recap

Interactive mode: session recap

Custom themesv2.1.118

Build and switch between named color themes from /theme, or hand-edit JSON files in \~/.claude/themes/. Each theme picks a base preset and overrides only the tokens you care about. Plugins can ship themes too.

Open the theme picker and create a new one:

> /theme

Terminal config: create a custom theme

<div className="digest-feature"> <div className="digest-feature-header"> <span className="digest-feature-title">Claude Code on the web</span> <span className="digest-feature-pill">web</span> </div>

A new look for claude.ai/code that matches the redesigned desktop app: sessions sidebar, drag-and-drop layout, and a refreshed routines view. Key parts were rebuilt for quicker responses and a more reliable experience.

<img className="w-full" src="https://mintcdn.com/claude-code/FTi4SBJ9YRs7d-5X/images/whats-new/web-redesign.jpeg?fit=max&auto=format&n=FTi4SBJ9YRs7d-5X&q=85&s=a2aca1b49e295b7337f5779038db8e2c" alt="Claude Code on the web redesign overview: new UI, speed and reliability, work across web, mobile, and CLI" width="1602" height="1610" data-path="images/whats-new/web-redesign.jpeg" />

Claude Code on the web

</div> <div className="digest-wins"> <p className="digest-wins-title">Other wins</p> <div className="digest-wins-grid"> <div><a href="https://code.claude.com/docs/en/interactive-mode#vim-editor-mode">Vim visual mode</a>: press <code>v</code> for character selection or <code>V</code> for line selection in the prompt input, with operators and visual feedback</div> <div>Hooks can now call MCP tools directly via <a href="https://code.claude.com/docs/en/hooks#mcp-tool-hook-fields"><code>type: "mcp\_tool"</code></a>, so a hook can hit an already-connected server without spawning a process</div> <div><code>/cost</code> and <code>/stats</code> are merged into <a href="https://code.claude.com/docs/en/commands"><code>/usage</code></a>; the old names still work as typing shortcuts that open the relevant tab</div> <div><code>/config</code> changes (theme, editor mode, verbose, and similar) now persist to <code>\~/.claude/settings.json</code> and follow the same project/local/policy precedence as other <a href="https://code.claude.com/docs/en/settings">settings</a></div> <div><a href="https://code.claude.com/docs/en/sub-agents#fork-the-current-conversation">Forked subagents</a> can be enabled on external builds with <code>CLAUDE\_CODE\_FORK\_SUBAGENT=1</code>: a fork inherits your full conversation context instead of starting fresh</div> <div>Default <a href="https://code.claude.com/docs/en/model-config#adjust-effort-level">effort level</a> for Pro and Max subscribers on Opus 4.6 and Sonnet 4.6 is now <code>high</code> (was <code>medium</code>)</div> <div>Native macOS and Linux builds replace the <code>Glob</code> and <code>Grep</code> tools with embedded <code>bfs</code> and <code>ugrep</code> available through Bash, for faster searches without a separate tool round-trip</div> <div><code>--from-pr</code> now accepts GitLab merge request, Bitbucket pull request, and GitHub Enterprise PR URLs in addition to github.com</div> <div>Auto mode: include <code>"\$defaults"</code> in <a href="https://code.claude.com/docs/en/auto-mode-config"><code>autoMode.allow</code>, <code>soft\_deny</code>, or <code>environment</code></a> to add custom rules alongside the built-in list instead of replacing it</div> <div>New <a href="https://code.claude.com/docs/en/plugin-dependencies#tag-plugin-releases-for-version-resolution"><code>claude plugin tag</code></a> command creates release git tags for plugins with version validation</div> <div>Opus 4.7 sessions now compute against the model's native 1M context window, fixing inflated <code>/context</code> percentages and premature autocompaction</div> <div><code>/resume</code> on large sessions is up to 67% faster and now offers to summarize stale, large sessions before re-reading them</div> </div> </div>

Full changelog for v2.1.114–v2.1.119 →