CLAUDE_CODE_HTTP_PROXY

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_HTTP_PROXY is a Claude Code environment variable: Claude-namespaced HTTP proxy URL. Claude-namespacing avoids collisions with system HTTP_PROXY for other tools in the shell that should use a different proxy. Completes the proxy surface started in v2.1.104 (OS CA trust) and v2.1.114 (proxy auth helper). Added between v2.1.114 and v2.1.117 and still present in v2.1.294. It is not in the official reference.

How to set it

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

export CLAUDE_CODE_HTTP_PROXY=<value>
claude

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

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

Release notes that mention it

• Claude Code v2.1.123 — Background Daemons, Agent Fleets, and CoWork Memory
• Claude Code v2.1.118 — 10 New Environment Variables: Forked Subagents Ship, Subscription Tiering Takes Shape
• Claude Code Version Tracker: Undocumented Env Vars, Feature Gates & Models

Related variables

• CLAUDE_CODE_HOST_HTTP_PROXY_PORT: HTTP proxy port for host.
• HTTP_PROXY: HTTP proxy server URL.
• CLAUDE_CODE_HOST_SOCKS_PROXY_PORT: SOCKS proxy port for host.
• 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_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.

Frequently asked questions

All variables, searchable: Claude Code environment variables.