CLAUDE_CODE_PROXY_HOST

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_PROXY_HOST is a Claude Code environment variable: Proxy hostname, passed alongside the URL so helpers that route credentials by hostname don't need to re-parse. Added between v2.1.108 and v2.1.114 and still present in v2.1.294. It is not in the official reference.

Status	Present in v2.1.294
Added	Added between v2.1.108 and v2.1.114
Category	Network and proxy
Official docs	Not listed

How to set it

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

export CLAUDE_CODE_PROXY_HOST=<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_HOST": "<value>"
  }
}

Release notes that mention it

Claude Code v2.1.114 — Native Binary Launcher, /fewer-permission-prompts, and 20 New Environment Variables

Related variables

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_RESOLVES_HOSTS: Proxy handles DNS resolution (skip local DNS).
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.
HTTP_PROXY: HTTP proxy server URL.

Frequently asked questions

What does CLAUDE_CODE_PROXY_HOST do?

Proxy hostname, passed alongside the URL so helpers that route credentials by hostname don't need to re-parse.

Which Claude Code version has CLAUDE_CODE_PROXY_HOST?

Added between v2.1.108 and v2.1.114 and still present in v2.1.294.

How do I set CLAUDE_CODE_PROXY_HOST?

Export it before starting Claude Code (export CLAUDE_CODE_PROXY_HOST=value), or add it to the "env" object in ~/.claude/settings.json to apply it to every session.

All variables, searchable: Claude Code environment variables.