CLAUDE_CODE_HOST_HTTP_PROXY_PORT

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_HOST_HTTP_PROXY_PORT is a Claude Code environment variable: HTTP proxy port for host. Removed between v2.1.245 and v2.1.247, so current releases ignore it. 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_HOST_HTTP_PROXY_PORT=<value>
claude

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

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

Release notes that mention it

• Claude Code v2.1.76 — 3 New Environment Variables: MCP Elicitation and Worktree Improvements
• 83 Undocumented Claude Code Environment Variables (v2.1.19)

Related variables

• CLAUDE_CODE_HOST_SOCKS_PROXY_PORT: SOCKS proxy port for host.
• CLAUDE_CODE_HTTP_PROXY: Claude-namespaced HTTP 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.
• HTTP_PROXY: HTTP proxy server 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.

Frequently asked questions

All variables, searchable: Claude Code environment variables.