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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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8 pages for anthropic_aws_base_url.

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Claude Code on Claude Platform on AWS Claude Code CLI · in the page claude-platform-on-aws …-bedrock#3-configure-claude-code). To override the URL directly, set `ANTHROPIC_AWS_BASE_URL`. Claude Platform on AWS is opt-in even when AWS credentials are present in your environment. Amazon Bedro… Environment variables Claude Code CLI · in the page env-vars …| | `ANTHROPIC_AWS_BASE_URL` | Override the [Claude Platform on AWS](/docs/en/claude-platform-on-aws) en… Error reference Claude Code CLI · in the page errors …ocs/en/gateways) connections reached through `ANTHROPIC_BASE_URL` or `ANTHROPIC_AWS_BASE_URL` while the server's keep-alive pings were still arriving, because it counted only parsed response events th… Connect Claude Code to an LLM gateway Claude Code CLI · in the page llm-gateway-connect …Tabs> <Tab title="Bash or Zsh"> ```bash theme={null} export ANTHROPIC_AWS_BASE_URL=https://llm-gateway.example.com/anthropic-aws export ANTHROPIC_AWS_WORKSPACE_ID=wrkspc_01ABCDEFGHIJKLMN… Gateway protocol reference Claude Code CLI · in the page llm-gateway-protocol …o them through their own variables, `ANTHROPIC_FOUNDRY_BASE_URL` and `ANTHROPIC_AWS_BASE_URL`, but a gateway fronting either implements the Anthropic Messages row above. A gateway fronting the Claude… Roll out an LLM gateway for your organization Claude Code CLI · in the page llm-gateway-rollout …_URL`, `ANTHROPIC_VERTEX_BASE_URL`, `ANTHROPIC_FOUNDRY_BASE_URL`, or `ANTHROPIC_AWS_BASE_URL` with the [variables for that provider](/docs/en/llm-gateway-connect#route-to-a-cloud-provider-through-a-ga… How Claude Code uses prompt caching Claude Code CLI · in the page prompt-caching …ting at a host outside `services.ai.azure.com`, such as a gateway * [`ANTHROPIC_AWS_BASE_URL`](/docs/en/env-vars) set to any value on [Claude Platform on AWS](/docs/en/claude-platform-on-aws), includi… Enterprise deployment overview Claude Code CLI · in the page third-party-integrations …nfigure with the `ANTHROPIC_BASE_URL`, `ANTHROPIC_BEDROCK_BASE_URL`, `ANTHROPIC_AWS_BASE_URL`, `ANTHROPIC_VERTEX_BASE_URL`, or `ANTHROPIC_FOUNDRY_BASE_URL` environment variables. Learn more in [LLM ga…