CLAUDE_CODE_OAUTH_401_WAIT_MS

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_OAUTH_401_WAIT_MS is a Claude Code environment variable. Added between v2.1.143 and v2.1.212 and still present in v2.1.295. It is not in the official reference.

Status	Present in v2.1.295
Added	Added between v2.1.143 and v2.1.212
Category	Authentication
Official docs	Not listed

How to set it

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

export CLAUDE_CODE_OAUTH_401_WAIT_MS=<value>
claude

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

// ~/.claude/settings.json
{
  "env": {
    "CLAUDE_CODE_OAUTH_401_WAIT_MS": "<value>"
  }
}

Related variables

CLAUDE_CODE_CUSTOM_OAUTH_URL: Custom OAuth endpoint URL.
CLAUDE_CODE_OAUTH_CLIENT_ID: Custom OAuth client ID.
CLAUDE_CODE_OAUTH_REFRESH_TOKEN: OAuth refresh token.
CLAUDE_CODE_OAUTH_SCOPES: OAuth scopes for refresh token.
CLAUDE_CODE_OAUTH_TOKEN: Pre-configured OAuth access token.
CLAUDE_CODE_OAUTH_TOKEN_FILE_DESCRIPTOR: File descriptor to read OAuth token from.
CLAUDE_CODE_SDK_HAS_OAUTH_REFRESH: Signals to the Claude Code runtime that the SDK caller has already provided an OAuth refresh token.
CLAUDE_LOCAL_OAUTH_API_BASE: Overrides the base URL for local OAuth API operations.

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_OAUTH_401_WAIT_MS?

Added between v2.1.143 and v2.1.212 and still present in v2.1.295.

How do I set CLAUDE_CODE_OAUTH_401_WAIT_MS?

Export it before starting Claude Code (export CLAUDE_CODE_OAUTH_401_WAIT_MS=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.