Roll out an LLM gateway for your organization changedllm-gateway-rollout
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162162| `CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY` | Queries the gateway's `/v1/models` at startup and adds the returned names to the `/model` picker | Your gateway serves `/v1/models` and you want developers' pickers populated from it |
163163| `CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS` | Stops Claude Code sending pre-release capability headers and body fields. [Disable pre-release capabilities](https://code.claude.com/docs/en/llm-gateway-protocol.md#disable-pre-release-capabilities) covers the exact scope | Your gateway forwards to an Amazon Bedrock or Google Cloud's Agent Platform upstream that rejects beta fields. See [Gateway requirements](#gateway-requirements) |
164164| `CLAUDE_CODE_SKIP_FAST_MODE_NETWORK_ERRORS` or `CLAUDE_CODE_SKIP_FAST_MODE_ORG_CHECK` | Restores [fast mode](https://code.claude.com/docs/en/fast-mode.md) when its availability check, which calls `api.anthropic.com` directly rather than following `ANTHROPIC_BASE_URL`, fails, is intercepted, or is skipped for lack of an Anthropic credential | Your organization uses fast mode, and developers authenticate with `ANTHROPIC_AUTH_TOKEN` alone, with a gateway-issued key in `ANTHROPIC_API_KEY` or from an `apiKeyHelper`, or your network blocks or intercepts direct requests to `api.anthropic.com`; [use fast mode behind proxies and LLM gateways](https://code.claude.com/docs/en/fast-mode.md#use-fast-mode-behind-proxies-and-llm-gateways) covers which of the two variables matches your configuration |
165| `ANTHROPIC_MODEL` or [`ANTHROPIC_DEFAULT_HAIKU_MODEL`](https://code.claude.com/docs/en/model-config) | Set which model name Claude Code requests for the main session and for background traffic | Your gateway routes model names that don't match Claude Code's defaults, or you route [background functionality](https://code.claude.com/docs/en/costs.md#background-token-usage) to a different model. Route both the override names and the built-in model IDs Claude Code requests when no override is set, since some background sub-calls request a built-in ID regardless of the override; [model configuration](https://code.claude.com/docs/en/model-config.md) covers which model each part of a session uses |
165| `ANTHROPIC_MODEL` or [`ANTHROPIC_DEFAULT_HAIKU_MODEL`](https://code.claude.com/docs/en/model-config) | Set which model name Claude Code requests for the main session and for background traffic | Your gateway routes model names that don't match Claude Code's defaults, or you route [background functionality](https://code.claude.com/docs/en/model-config.md#environment-variables) to a different model. Route both the override names and the built-in model IDs Claude Code requests when no override is set, since some background sub-calls request a built-in ID regardless of the override |
166166| `ANTHROPIC_BEDROCK_BASE_URL`, `ANTHROPIC_VERTEX_BASE_URL`, `ANTHROPIC_FOUNDRY_BASE_URL`, or `ANTHROPIC_AWS_BASE_URL` with the [variables for that provider](https://code.claude.com/docs/en/llm-gateway-connect.md#route-to-a-cloud-provider-through-a-gateway) | Point Claude Code at the gateway through a provider-specific base URL. Amazon Bedrock and Google Cloud's Agent Platform also switch to those providers' native request format | Your gateway fronts Amazon Bedrock, Google Cloud's Agent Platform, Microsoft Foundry, or the Claude Platform on AWS; see [API formats](https://code.claude.com/docs/en/llm-gateway-protocol.md#api-formats) |
167167
168168#### Distribute through managed settings
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