CLAUDE_CODE_PROXY_RESOLVES_HOSTS

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_PROXY_RESOLVES_HOSTS is a Claude Code environment variable: Proxy handles DNS resolution (skip local DNS). Present since v2.1.69 or earlier 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_PROXY_RESOLVES_HOSTS=<value>
claude

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

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

Related variables

• CLAUDE_CODE_AGENT_PROXY_GIT_HOSTS
• CLAUDE_CODE_HOST_HTTP_PROXY_PORT: HTTP proxy port for host.
• CLAUDE_CODE_HOST_SOCKS_PROXY_PORT: SOCKS proxy port for host.
• CLAUDE_CODE_HTTP_PROXY: Claude-namespaced HTTP proxy URL.
• CLAUDE_CODE_HTTPS_PROXY: Claude-namespaced HTTPS proxy URL.
• CLAUDE_CODE_PROXY_HOST: Proxy hostname, passed alongside the URL so helpers that route credentials by hostname don't need to re-parse.
• CLAUDE_CODE_PROXY_URL: Full proxy URL, injected into the helper subprocess's environment.
• CLAUDE_CODE_SIMULATE_PROXY_USAGE: Simulates proxy-based API routing without an actual proxy.

Frequently asked questions

All variables, searchable: Claude Code environment variables.