Week 24 · June 8–12, 2026 changedwhats-new/2026-w24
Nearest release: v2.1.260, published an hour 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 4 Sep 2026 00:23 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 22 Oct 2026 18:07 UTC.
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33> Move a session to a new directory with /cd, let subagents spawn their own subagents, and troubleshoot a broken configuration with safe mode.
44
5Releases [v2.1.166 → v2.1.176](/docs/en/changelog#2-1-166)
5Releases [v2.1.166 → v2.1.176](/docs/en/changelog.md#2-1-166)
663 features · June 8–12
77
88Move a session with /cd
from line 16
1616> /cd ../other-project
1717```
1818
19[Commands reference](/docs/en/commands#all-commands)
19[Commands reference](/docs/en/commands.md#all-commands)
2020
2121Subagents can spawn subagents
2222v2.1.172
from line 29
2929> /agents
3030```
3131
32[Spawn nested subagents](/docs/en/sub-agents#let-subagents-spawn-their-own-subagents)
32[Spawn nested subagents](/docs/en/sub-agents.md#let-subagents-spawn-their-own-subagents)
3333
3434Troubleshoot with safe mode
3535v2.1.169
from line 42
4242claude --safe-mode
4343```
4444
45[Test against a clean configuration](/docs/en/debug-your-config#test-against-a-clean-configuration)
45[Test against a clean configuration](/docs/en/debug-your-config.md#test-against-a-clean-configuration)
4646
4747Other wins
4848
4949[`fallbackModel`](/docs/en/model-config#fallback-model-chains) configures up to three fallback models tried in order when the primary is overloaded or unavailable, and `--fallback-model` now applies to interactive sessions tooSession titles are now generated in the language of your conversation; pin a specific one with the `language` setting`claude agents --json` adds `--all` to include completed sessions plus new `id` and `state` fields, and no longer omits blocked or newly dispatched sessionsBrowsing a marketplace's plugins in `/plugin` now has a search barNew `disableBundledSkills` setting and `CLAUDE_CODE_DISABLE_BUNDLED_SKILLS` hide bundled skills, workflows, and built-in commands from the modelDeny rules accept a glob in the tool-name position, so `"*"` denies all tools, and unknown tool names in deny rules now warn at startupAgent messaging is hardened: messages relayed via `SendMessage` from other agents no longer carry user authority, and auto mode blocks themAmazon Bedrock reads the AWS region from `~/.aws` config files when `AWS_REGION` is unset, and `/status` shows where the region came fromNew `enforceAvailableModels` managed setting makes the `availableModels` allowlist also constrain the Default modelClaude in Chrome browser tools now load in a single batched call instead of one per tool`claude update` announces the target version before downloading instead of going silentNew `footerLinksRegexes` setting adds regex-matched link badges to the footer row
5050
51[Full changelog for v2.1.166–v2.1.176 →](/docs/en/changelog#2-1-166)
51[Full changelog for v2.1.166–v2.1.176 →](/docs/en/changelog.md#2-1-166)
5252
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