PIP_INDEX_URL

Updated October 13, 2026 by Alex Sorokoletov

PIP_INDEX_URL is a Claude Code environment variable. Its release history is not tracked here. It is listed in the official reference.

Status	Present in v2.1.294
Category	Network and proxy
Official docs	Listed

How to set it

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

export PIP_INDEX_URL=<value>
claude

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

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

Related variables

ANTHROPIC_BASE_URL: Custom endpoint for Anthropic services.
CLAUDE_CODE_API_BASE_URL: Custom Claude Code API base URL for proxies.
CLAUDE_CODE_GB_BASE_URL: An internal base URL override, possibly for a "gradebook" or grading service used during internal testing.
CLAUDE_CODE_MCP_SERVER_URL: The companion to MCP_SERVER_NAME, providing the server endpoint URL.
CLAUDE_CODE_PROXY_URL: Full proxy URL, injected into the helper subprocess's environment.
DATABASE_URL
CLAUDE_BRIDGE_BASE_URL
CLAUDE_BRIDGE_SESSION_INGRESS_URL

Frequently asked questions

Which Claude Code version has PIP_INDEX_URL?

Its release history is not tracked here.

How do I set PIP_INDEX_URL?

Export it before starting Claude Code (export PIP_INDEX_URL=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.