Environment variables changedenv-vars
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169169| `ANTHROPIC_FOUNDRY_RESOURCE` | Microsoft Foundry resource name (for example, `my-resource`). Required if `ANTHROPIC_FOUNDRY_BASE_URL` is not set (see [Microsoft Foundry](/docs/en/microsoft-foundry)) |
170170| `ANTHROPIC_MODEL` | Name of the model setting to use (see [Model Configuration](/docs/en/model-config#environment-variables)) |
171171| `ANTHROPIC_ORGANIZATION_ID` | Organization ID for [Workload Identity Federation](https://platform.claude.com/docs/en/manage-claude/workload-identity-federation). Set it together with `ANTHROPIC_FEDERATION_RULE_ID`. See [authentication precedence](/docs/en/authentication#authentication-precedence) |
172| `ANTHROPIC_PROFILE` | Name of the Anthropic profile to authenticate with, such as one created by [`ant auth login`](https://platform.claude.com/docs/en/cli-sdks-libraries/cli/authentication). The named profile ranks above your `/login` credential. See [authentication precedence](/docs/en/authentication#authentication-precedence) |
172| `ANTHROPIC_PROFILE` | Name of the Anthropic profile to authenticate with, such as one created by [`ant auth login`](https://platform.claude.com/docs/en/cli-sdks-libraries/cli/authentication) or by [signing in to a Console account without an API key](/docs/en/authentication#sign-in-without-an-api-key). The named profile ranks above your `/login` credential. See [authentication precedence](/docs/en/authentication#authentication-precedence) |
173173| `ANTHROPIC_SMALL_FAST_MODEL` | \[DEPRECATED] Name of [Haiku-class model for background tasks](/docs/en/costs) |
174174| `ANTHROPIC_SMALL_FAST_MODEL_AWS_REGION` | Override AWS region for the Haiku-class model when using Amazon Bedrock or Amazon Bedrock Mantle. On Amazon Bedrock, this only takes effect when `ANTHROPIC_DEFAULT_HAIKU_MODEL` or the deprecated `ANTHROPIC_SMALL_FAST_MODEL` is also set, since Amazon Bedrock otherwise runs background tasks on the [default Sonnet model or the primary model](/docs/en/amazon-bedrock#4-pin-model-versions) in the session region |
175175| `ANTHROPIC_VERTEX_BASE_URL` | Override Google Cloud's Agent Platform endpoint URL. Use for custom Google Cloud's Agent Platform endpoints or when routing through an [LLM gateway](/docs/en/llm-gateway). See [Google Cloud's Agent Platform](/docs/en/google-vertex-ai) |
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181181| `BASH_DEFAULT_TIMEOUT_MS` | Default timeout for long-running bash commands (default: 120000, or 2 minutes) |
182182| `BASH_MAX_OUTPUT_LENGTH` | Maximum number of characters of bash output that Claude Code reads back into a command's result (default: 30000; maximum: 150000). See [Output limits](/docs/en/tools-reference#output-limits) |
183183| `BASH_MAX_TIMEOUT_MS` | Maximum timeout the model can set for long-running bash commands (default: 600000, or 10 minutes). The effective ceiling is the larger of this and `BASH_DEFAULT_TIMEOUT_MS` |
184| `BETA_TRACING_ENDPOINT` | OTLP endpoint for [detailed beta tracing](/docs/en/monitoring-usage#traces-beta): with `ENABLE_BETA_TRACING_DETAILED=1`, logs and traces go there instead of to the configured exporters. Set it in your shell, user settings, or managed settings. Ignored in [project and local settings](/docs/en/settings-reference#variables-claude-code-ignores-in-env) |
184185| `CCR_FORCE_BUNDLE` | Set to `1` to force [`claude --cloud`](/docs/en/claude-code-on-the-web#send-local-repositories-without-github) to bundle and upload your local repository even when GitHub access is available |
185186| `CLAUDECODE` | Set to `1` in subprocesses Claude Code spawns (Bash and PowerShell tools, tmux sessions, [hook](/docs/en/hooks) commands, [status line](/docs/en/statusline) commands, stdio [MCP server](/docs/en/mcp) subprocesses). IDE extensions also set this in their integrated terminals. Use to detect when a script is running inside a subprocess spawned by Claude Code. To check whether the current process was spawned directly by a tool call or hook, rather than inside a stdio MCP server that Claude Code started, use `CLAUDE_CODE_CHILD_SESSION` instead |
186187| `CLAUDE_AFK_COUNTDOWN_MS` | How many milliseconds before auto-continue the on-screen countdown appears on an unanswered [`AskUserQuestion`](/docs/en/tools-reference) dialog. Default `20000` (20 seconds), capped at the auto-continue timeout. Has no effect unless auto-continue is on; see the [`askUserQuestionTimeout`](/docs/en/settings-reference#askuserquestiontimeout) setting and `CLAUDE_AFK_TIMEOUT_MS`. Requires Claude Code v2.1.198 or later |
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318319| `CLAUDE_CODE_PERFORCE_MODE` | Set to `1` to enable Perforce-aware write protection. When set, Edit, Write, and NotebookEdit fail with a `p4 edit <file>` hint if the target file lacks the owner-write bit, which Perforce clears on synced files until `p4 edit` opens them. This prevents Claude Code from bypassing Perforce change tracking |
319320| `CLAUDE_CODE_PLUGIN_CACHE_DIR` | Override the plugins root directory. Despite the name, this sets the parent directory, not the cache itself: marketplaces and the plugin cache live in subdirectories under this path. Defaults to `~/.claude/plugins` |
320321| `CLAUDE_CODE_PLUGIN_GIT_TIMEOUT_MS` | Timeout in milliseconds for git operations when installing or updating plugins (default: 120000). Increase this value for large repositories or slow network connections. See [Git operations time out](/docs/en/plugin-marketplaces#git-operations-time-out) |
321| `CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE` | Set to `1` to skip the re-clone attempt and keep using the existing marketplace cache when a `git pull` fails. Useful in offline or airgapped environments where re-cloning would fail the same way. See [Marketplace updates fail in offline environments](/docs/en/plugin-marketplaces#marketplace-updates-fail-in-offline-environments) |
322| `CLAUDE_CODE_PLUGIN_PREFER_HTTPS` | Set to `1` to clone GitHub `owner/repo` shorthand sources over HTTPS instead of SSH. Applies to plugin install and update, and to `/plugin mar
322| `CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE` | Set to `1` to skip the re-clone attempt and keep using the existing marketplace cache when a `git pull` fails. Useful in offline or
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