CLAUDE_CODE_WARN_DISK_FREE_GIB

Updated October 22, 2026 by Alex Sorokoletov

CLAUDE_CODE_WARN_DISK_FREE_GIB is a Claude Code environment variable. Added in v2.1.304 and still present in v2.1.309. It is listed in the official reference.

Status	Present in v2.1.309
Added	Added in v2.1.304
Category	Other
Official docs	Listed

How to set it

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

export CLAUDE_CODE_WARN_DISK_FREE_GIB=<value>
claude

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

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

Related variables

ANTHROPIC_BETAS: Comma-separated beta feature headers.
ANTHROPIC_CUSTOM_HEADERS: Custom HTTP headers (newline-separated Key: Value).
ANTHROPIC_FEDERATION_RULE_ID
ANTHROPIC_ORGANIZATION_ID
ANTHROPIC_WORKSPACE_ID
BETA_TRACING_ENDPOINT: Custom endpoint for beta tracing.
CLAUDE_AI_ORIGIN: Overrides the base URL for Claude AI authentication endpoints.
CLAUDE_BASE: Likely overrides the base URL or base configuration path for Claude Code.

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_WARN_DISK_FREE_GIB?

Added in v2.1.304 and still present in v2.1.309.

How do I set CLAUDE_CODE_WARN_DISK_FREE_GIB?

Export it before starting Claude Code (export CLAUDE_CODE_WARN_DISK_FREE_GIB=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.