Week 32 · August 3–7, 2026 changedwhats-new/2026-w32
Nearest release: v2.1.301, published 4 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 15 Oct 2026 19:23 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 20 Oct 2026 18:37 UTC.
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33> Claude Code sessions message each other, self-hosted environments run cloud sessions on your infrastructure, and auto mode becomes the default permission mode.
44
5<div className="digest-meta">
6 <span>Releases <a href="/docs/en/changelog#2-1-220">v2.1.220 → v2.1.224</a></span>
7 <span>3 features · August 3–7</span>
8</div>
5Releases [v2.1.220 → v2.1.224](/docs/en/changelog#2-1-220)
63 features · August 3–7
97
10<div className="digest-feature">
11 <div className="digest-feature-header">
12 <span className="digest-feature-title">Cross-session messaging</span>
13 <span className="digest-feature-pill">v2.1.224</span>
14 </div>
8Cross-session messaging
9v2.1.224
1510
16 <p className="digest-feature-lede">Your Claude Code sessions can now message each other. Claude discovers your other sessions with the <code>ListAgents</code> tool and sends with <code>SendMessage</code>, either when you ask it to or on its own, such as after a change in one session affects what another is working on. A message is text Claude writes for the other session, never your conversation history or files. Available on macOS and Linux. Requires v2.1.224 or later.</p>
11Your Claude Code sessions can now message each other. Claude discovers your other sessions with the `ListAgents` tool and sends with `SendMessage`, either when you ask it to or on its own, such as after a change in one session affects what another is working on. A message is text Claude writes for the other session, never your conversation history or files. Available on macOS and Linux. Requires v2.1.224 or later.
1712
18 <Frame>
19 <video autoPlay muted loop playsInline className="w-full" src="https://mintcdn.com/claude-code/N3yEaTYPXMXFrF6k/images/whats-new/cross-session-messaging.mp4?fit=max&auto=format&n=N3yEaTYPXMXFrF6k&q=85&s=8f33c3390f78660a4a26dc980f46159f" data-path="images/whats-new/cross-session-messaging.mp4" />
20 </Frame>
13<video autoPlay muted loop playsInline src="https://mintcdn.com/claude-code/N3yEaTYPXMXFrF6k/images/whats-new/cross-session-messaging.mp4?fit=max&auto=format&n=N3yEaTYPXMXFrF6k&q=85&s=8f33c3390f78660a4a26dc980f46159f" />
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22 <p className="digest-feature-try">With two sessions open on the same machine, ask one of them to pass something along:</p>
15With two sessions open on the same machine, ask one of them to pass something along:
2316
24 ```text title="Claude Code" wrap theme={null}
25 Tell the session working on the payments API that users.name is now users.display_name
26 ```
17```text title="Claude Code" wrap theme={null}
18Tell the session working on the payments API that users.name is now users.display_name
19```
2720
28 <p className="digest-feature-try">The other session shows a <code>Message from</code> row once Claude has read the message; press <code>Ctrl+O</code> to expand it. To see which sessions Claude can reach, run <code>/list-agents</code>.</p>
21The other session shows a `Message from` row once Claude has read the message; press `Ctrl+O` to expand it. To see which sessions Claude can reach, run `/list-agents`.
2922
30 <a className="digest-feature-link" href="/docs/en/cross-session-messaging#message-another-session">Message another session</a>
31</div>
23[Message another session](/docs/en/cross-session-messaging#message-another-session)
3224
33<div className="digest-feature">
34 <div className="digest-feature-header">
35 <span className="digest-feature-title">Self-hosted environments</span>
36 <span className="digest-feature-pill">v2.1.224</span>
37 </div>
25Self-hosted environments
26v2.1.224
3827
39 <p className="digest-feature-lede">Self-hosted environments run Claude Code cloud sessions on your organization's own infrastructure, in public beta on Team and Enterprise plans. Run <code>claude self-hosted-runner</code> on your machines or containers to turn them into runners. When someone picks your environment while starting a session from claude.ai, the mobile or desktop apps, or `claude --cloud`, that session runs inside your network, with access to your internal services. An Owner turns on <strong>Allow self-hosted environments</strong> in <a href="https://claude.ai/admin-settings/cloud-environments">admin settings</a> first.</p>
28Self-hosted environments run Claude Code cloud sessions on your organization's own infrastructure, in public beta on Team and Enterprise plans. Run `claude self-hosted-runner` on your machines or containers to turn them into runners. When someone picks your environment while starting a session from claude.ai, the mobile or desktop apps, or `claude --cloud`, that session runs inside your network, with access to your internal services. An Owner turns on **Allow self-hosted environments** in [admin settings](https://claude.ai/admin-settings/cloud-environments) first.
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41 <Frame>
42 <img className="w-full" src="https://mintcdn.com/claude-code/N3yEaTYPXMXFrF6k/images/whats-new/self-hosted-environments.jpg?fit=max&auto=format&n=N3yEaTYPXMXFrF6k&q=85&s=ae9152cb1670c8af517d1aee57689b14" alt="The self-hosted environments admin page listing environments such as linux-dev and macos-prod with their status and active session counts" width="2048" height="1152" data-path="images/whats-new/self-hosted-environments.jpg" />
43 </Frame>
30
4431
45 <p className="digest-feature-try">Signed in as an Owner, run the guided setup, which walks you through creating the environment and starts a runner:</p>
32Signed in as an Owner, run the guided setup, which walks you through creating the environment and starts a runner:
4633
47 ```bash terminal theme={null}
48 claude self-hosted-runner setup
49 ```
34```bash terminal theme={null}
35claude self-hosted-runner setup
36```
5037
51 <p className="digest-feature-try">The environment shows <strong>Healthy</strong> in admin settings once the runner registers.</p>
38The environment shows **Healthy** in admin settings once the runner registers.
5239
53 <a className="digest-feature-link" href="/docs/en/self-hosted-environments-quickstart#set-up-an-environment-and-runner">Self-hosted environments quickstart</a>
54</div>
40[Self-hosted environments quickstart](/docs/en/self-hosted-environments-quickstart#set-up-an-environment-and-runner)
5541
56<div className="digest-feature">
57 <div className="digest-feature-header">
58 <span className="digest-feature-title">Auto mode becomes the default</span>
59 <span className="digest-feature-pill">CLI</span>
60 </div>
42Auto mode becomes the default
43CLI
6144
62 <p className="digest-feature-lede">Starting August 14, auto mode is the default permission mode for new sessions on Pro, Max, and Team plans. If you set a default mode yourself, it stays in place unless you accept the one-time switch prompt, and a default your organization manages doesn't change. You can still switch modes at any time. Already in effect on those plans: the classifier calls auto mode makes no longer count toward your usage limits.</p>
45Starting August 14, auto mode is the default permission mode for new sessions on Pro, Max, and Team plans. If you set a default mode yourself, it stays in place unless you accept the one-time switch prompt, and a default your organization manages doesn't change. You can still switch modes at any time. Already in effect on those plans: the classifier calls auto mode makes no longer count toward your usage limits.
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64 <p className="digest-feature-try">To start every session in auto mode before the switch, set it as your default in your user settings:</p>
47To start every session in auto mode before the switch, set it as your default in your user settings:
6548
66 ```json ~/.claude/settings.json {3} theme={null}
67 {
68 "permissions": {
69 "defaultMode": "auto"
70 }
49```json ~/.claude/settings.json {3} theme={null}
50{
51 "permissions": {
52 "defaultMode": "auto"
7153 }
72 ```
54}
55```
7356
74 <p className="digest-feature-try">New sessions then show <code>auto mode on</code> in the status bar.</p>
57New sessions then show `auto mode on` in the status bar.
7558
76 <a className="digest-feature-link" href="/docs/en/permission-modes#eliminate-prompts-with-auto-mode">Auto mode requirements and controls</a>
77</div>
59[Auto mode requirements and controls](/docs/en/permission-modes#eliminate-prompts-with-auto-mode)
7860
79<div className="digest-wins">
80 <p className="digest-wins-title">Other wins</p>
61Other wins
8162
82 <div className="digest-wins-grid">
83 <div>The VS Code extension gets <a href="/docs/en/vs-code#extension-settings">Focus view</a>, which hides tool activity behind one expandable row per turn; toggle it from the command menu or with <code>Ctrl+Alt+F</code> (<code>Ctrl+Option+F</code> on Mac)</div>
84 <div>Sandbox credential files accept <a href="/docs/en/sandboxing#mask-credential-files"><code>mode: "mask"</code></a> on Linux and WSL2, so sandboxed commands read a sentinel copy while the sandbox proxy substitutes the real value on egress; credential masking also gains <code>extract</code>, JWT-aware <code>decode</code>, and AWS SigV4 re-signing options</div>
85 <div>Marketplaces can distribute a plugin as a <a href="/docs/en/plugins/marketplace-reference#archive-plugin-source">zip archive</a> with the new <code>archive</code> source, downloaded over HTTPS with an optional SHA-256 pin, so installs work without git or npm</div>
86 <div><code>/review</code> is now an alias of <a href="/docs/en/code-review-local"><code>/code-review</code></a>, and <code>/code-review</code> with no effort level reuses the level you typed last</div>
87 <div>A session you copy with <a href="/docs/en/agent-view#copy-the-session-with-%2Ffork"><code>/fork</code></a> now makes its code changes in a worktree of its own instead of the original session's checkout</div>
88 <div>Plugins you install from <a href="/docs/en/plugins/install#install-a-plugin"><code>/plugin</code></a> activate in the current session when it's safe to do so; the install summary reports <code>Plugin is now active.</code> or tells you to run <code>/reload-plugins</code></div>
89 <div><a href="/docs/en/agent-view#how-file-edits-are-isolated">Background sessions</a> that changed code in a worktree now commit and push before finishing, open a draft pull request only when the task calls for one, and follow the git instructions in your <code>CLAUDE.md</code></div>
90 <div>The 200-subagent-per-session cap is removed, so long-running sessions no longer refuse new subagents; the <a href="/docs/en/sub-agents#concurrent-subagent-limit">concurrency</a> and depth limits still apply</div>
91 <div>A repository's checked-in settings can no longer turn on <a href="/docs/en/remote-control#enable-remote-control-for-all-sessions">Remote Control auto-connect</a>; set <code>remoteControlAtStartup</code> in your user or managed settings instead, and project and local settings can only turn it off</div>
92 <div><a href="/docs/en/worktrees#how-claude-code-enforces-isolation">Worktree isolation</a> now blocks not only file edits but also Bash commands and git redirects that reach the main checkout, in every session type and in the session's subagents</div>
93 <div>A Bash command can no longer hide part of itself from permission checks, and tab or invisible-Unicode padding no longer hides part of a command from the approval dialog</div>
94 <div>PreToolUse auto-allow hooks no longer bypass tool restrictions in Claude Code's internal side tasks such as summaries and compaction</div>
95 <div>The <a href="/docs/en/ultraplan">Ultraplan</a> research preview is removed, including the <code>/ultraplan</code> command and the <code>ultraplan</code> keyword; use plan mode or Claude Code on the web instead</div>
96 </div>
97</div>
63The VS Code extension gets [Focus view](/docs/en/vs-code#extension-settings), which hides tool activity behind one expandable row per turn; toggle it from the command menu or with `Ctrl+Alt+F` (`Ctrl+Option+F` on Mac)Sandbox credential files accept [`mode: "mask"`](/docs/en/sandboxing#mask-credential-files) on Linux and WSL2, so sandboxed commands read a sentinel copy while the sandbox proxy substitutes the real value on egress; credential masking also gains `extract`, JWT-aware `decode`, and AWS SigV4 re-signing optionsMarketplaces can distribute a plugin as a [zip archive](/docs/en/plugins/marketplace-reference#archive-plugin-source) with the new `archive` source, downloaded over HTTPS with an optional SHA-256 pin, so installs work without git or npm`/review` is now an alias of [`/code-review`](/docs/en/code-review-local), and `/code-review` with no effort level reuses the level you typed lastA session you copy with [`/fork`](/docs/en/agent-view#copy-the-session-with-%2Ffork) now makes its code changes in a worktree of its own instead of the original session's checkoutPlugins you install from [`/plugin`](/docs/en/plugins/install#install-a-plugin) activate in the current session when it's safe to do so; the install summary reports `Plugin is now active.` or tells you to run `/reload-plugins`[Background sessions](/docs/en/agent-view#how-file-edits-are-isolated) that changed code in a worktree now commit and push before finishing, open a draft pull request only when the task calls for one, and follow the git instructions in your `CLAUDE.md`The 200-subagent-per-session cap is removed, so long-running sessions no longer refuse new subagents; the [concurrency](/docs/en/sub-agents#concurrent-subagent-limit) and depth limits still applyA repository's checked-in settings can no longer turn on [Remote Control auto-connect](/docs/en/remote-control#enable-remote-control-for-all-sessions); set `remoteControlAtStartup` in your user or managed settings instead, and project and local settings can only turn it off[Worktree isolation](/docs/en/worktrees#how-claude-code-enforces-isolation) now blocks not only file edits but also Bash commands and git redirects that reach the main checkout, in every session type and in the session's subagentsA Bash command can no longer hide part of itself from permission checks, and tab or invisible-Unicode padding no longer hides part of a command from the approval dialogPreToolUse auto-allow hooks no longer bypass tool restrictions in Claude Code's internal side tasks such as summaries and compactionThe [Ultraplan](/docs/en/ultraplan) research preview is removed, including the `/ultraplan` command and the `ultraplan` keyword; use plan mode or Claude Code on the web instead
9864
9965[Full changelog for v2.1.220–v2.1.224 →](/docs/en/changelog#2-1-220)
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