CLAUDE_CODE_SKIP_ANTHROPIC_AWS_AUTH

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_SKIP_ANTHROPIC_AWS_AUTH is a Claude Code environment variable: Skips credential resolution for the Anthropic AWS provider. Source code shows two effects: (1) passes skipAuth: true to the AnthropicAws client constructor, and (2) skips the AWS credential fetch function entirely (no accessKeyId/secretAccessKey/sessionToken resolution) unless ANTHROPIC_AWS_API_KEY is also set. Added in v2.1.90 and still present in v2.1.294. It is listed in the official reference.

How to set it

For one session, export it in the shell that starts Claude Code:

export CLAUDE_CODE_SKIP_ANTHROPIC_AWS_AUTH=<value>
claude

To apply it to every session, add it to the env object of a settings file:

// ~/.claude/settings.json
{
  "env": {
    "CLAUDE_CODE_SKIP_ANTHROPIC_AWS_AUTH": "<value>"
  }
}

Release notes that mention it

• Claude Code v2.1.96 — No New Environment Variables: Bedrock Auth Hotfix
• Claude Code v2.1.90 — 3 New Environment Variables: Anthropic AWS Provider, Marketplace Resilience, and /powerup Lessons
• Claude Code Version Tracker: Undocumented Env Vars, Feature Gates & Models

Related variables

• CLAUDE_CODE_SKIP_ANTHROPIC_GOOGLE_CLOUD_AUTH: The skip-auth companion to the toggle above, grouped in the auth-bypass list with SKIP_BEDROCK_AUTH, SKIP_VERTEX_AUTH, SKIP_FOUNDRY_AUTH, SKIP_ANTHROPIC_AWS_AUTH, and SKIP_MANTLE_AUTH.
• ANTHROPIC_AWS_API_KEY
• ANTHROPIC_AWS_BASE_URL
• ANTHROPIC_AWS_WORKSPACE_ID
• ANTHROPIC_FOUNDRY_AUTH_TOKEN
• ANTHROPIC_SMALL_FAST_MODEL_AWS_REGION: AWS region for small fast model on Bedrock.
• CLAUDE_CODE_SKIP_AWS_CRED_CACHE
• CLAUDE_CODE_SKIP_BEDROCK_AUTH: Skip Bedrock authentication.

Frequently asked questions

All variables, searchable: Claude Code environment variables.