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HomeDocsClaude Code CLI 3 Nov 2026
One change · claude-code

Choose a permission mode changedpermission-modes

Nearest release: v2.1.318, published under 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 3 Nov 2026 22:38 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 3 Nov 2026 23:07 UTC.

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits104to this page, all time

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379379* **The server doesn't review the session**: a response completes with no review results, or the server answers that it doesn't review this session. The most common causes are an LLM gateway or proxy that drops the request for review or the results, and a platform, region, or credential that doesn't have server-side checks yet. Claude Code falls back to its own classifier requests. Once that fallback holds for the rest of the session, it shows a [notice about classifier request charges](https://code.claude.com/docs/en/auto-mode-classifier-billing.md) on accounts where those requests are billed.
380380* **The server gives no verdict for an action**: Claude Code denies the action rather than run it unreviewed. On any connection, this happens when the response ends before the review results arrive or the results arrive in a form Claude Code can't read. An LLM gateway or proxy that cuts responses short or rewrites the results can cause either. On a direct connection to the Anthropic API, it also happens when the server's check fails for the action, for example by timing out. [The server returned no safety verdict](https://code.claude.com/docs/en/errors.md#the-server-returned-no-safety-verdict) covers the denial message, what happens when denials repeat, and what to do.
381381 
382 If a [hook](https://code.claude.com/docs/en/hooks.md#pretooluse-updatedinput-in-auto-mode) or [mod](https://code.claude.com/docs/en/plugins/mods/overview.md) changes an action's input after the server's review, Claude Code can deny the action with no verdict. In interactive terminal and VS Code sessions on a direct connection to the Anthropic API, the denial's text includes `a hook changed this call's input after auto mode reviewed it`. [Its error entry](https://code.claude.com/docs/en/errors.md#hook-changed-input-after-review) covers what to do.
383 
382384To skip asking the server and always use Claude Code's own classifier requests, set [`CLAUDE_CODE_AUTO_MODE_SERVER=0`](https://code.claude.com/docs/en/env-vars). On a direct connection to the Anthropic API, the variable requires Claude Code v2.1.281 or later. Setting it to `1` there turns server review on in a session that doesn't have it yet, unless you've also set `CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1`. If you set `CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1` and leave `CLAUDE_CODE_AUTO_MODE_SERVER` unset, Claude Code also stops asking the server, except as [Disable pre-release capabilities](https://code.claude.com/docs/en/llm-gateway-protocol.md#disable-pre-release-capabilities) describes.
383385 
384386### Default classifier model
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553555* **A blocked action**: Claude Code shows a notification and lists the action in `/permissions` under the **Recently blocked** tab, where you can [approve the action so Claude may retry](https://code.claude.com/docs/en/auto-mode-config.md#review-denials).
554556* **Repeated blocks**: if the classifier blocks an action 3 times in a row or 20 times total, auto mode pauses and Claude Code resumes prompting. Approving the prompted action resumes auto mode. See [Repeated-block thresholds](#repeated-block-thresholds) for how the blocks are counted.
555557* **No verdict from the classifier**: when a safety check separate from auto mode refuses the classifier's own request, or the classifier's response doesn't parse, Claude Code blocks the action without the notification or the **Recently blocked** entry. See [Auto mode cannot determine the safety of an action](https://code.claude.com/docs/en/errors.md#auto-mode-cannot-determine-the-safety-of-an-action) for the message each case shows and what to do.
556* **No verdict from the server**: under [server-side classifier review](#server-side-classifier-review), Claude Code denies an action the server gives no verdict for, and stops the turn after ten responses in a row with no verdict. See [The server returned no safety verdict](https://code.claude.com/docs/en/errors.md#the-server-returned-no-safety-verdict).
558* **No verdict from the server**: under [server-side classifier review](#server-side-classifier-review), Claude Code denies an action the server gives no verdict for, and can stop the turn after ten responses in a row with no verdict. See [The server returned no safety verdict](https://code.claude.com/docs/en/errors.md#the-server-returned-no-safety-verdict).
557559* **A mode switch during a check**: if you switch permission modes while a classifier check is pending, Claude Code discards a verdict the new mode wouldn't have requested. You're prompted for approval instead, or the action is auto-denied in [`dontAsk` mode](#allow-only-pre-approved-tools-with-dontask-mode).
558560 
559561#### Repeated-block thresholds
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