Use Claude Code in the cloud changedclaude-code-on-the-web
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262262* **`/fast`**: toggles [fast mode](/docs/en/fast-mode.md#use-fast-mode-in-cloud-sessions) for the session when fast mode is [available on your account](/docs/en/fast-mode.md#requirements). Requires Claude Code v2.1.271 or later in the session's environment.
263263* **`/config`**: in your browser at claude.ai/code, opens the Claude Code section of your settings instead of setting a value, and text after the command, including `key=value`, is ignored. To change a setting for a cloud session, set an [environment variable](/docs/en/cloud-environments.md#set-environment-variables) on the environment. In a session with one repository outside a [project](/docs/en/claude-projects.md)'s threads, commit the key to that repository's `.claude/settings.json` instead. [Settings in cloud sessions](/docs/en/settings.md#settings-in-cloud-sessions) lists what each session reads.
264264
265For context management specifically:
265For context management in a cloud session outside a [project's threads](/docs/en/claude-projects.md#choose-models-and-let-claude-manage-context):
266266
267267| Command | Works in cloud sessions | Notes |
268268| :- | :- | :- |
269269| `/compact` | Yes | Summarizes the conversation to free up context. Accepts optional focus instructions like `/compact keep the test output` |
270270| `/context` | Yes | Shows what's currently in the context window |
271| `/clear` | No | Start a new session from the sidebar instead |
271| `/clear` | Yes | Starts a fresh conversation with empty context in the same cloud session |
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273273Auto-compaction runs automatically when the context window approaches capacity. Cloud sessions set [`CLAUDE_AUTOCOMPACT_PCT_OVERRIDE`](/docs/en/env-vars) themselves, so compaction triggers partway through the [auto-compact window](/docs/en/model-config.md#set-the-auto-compact-window) rather than when the window fills. That value overrides one you add in your [environment variables](/docs/en/cloud-environments.md#set-environment-variables), so adding the variable there doesn't change when compaction triggers.
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