CLAUDE_CODE_GB_BASE_URL
Updated by Alex Sorokoletov
CLAUDE_CODE_GB_BASE_URL is a Claude Code environment variable: An internal base URL override, possibly for a "gradebook" or grading service used during internal testing. Its removal suggests the endpoint was consolidated or the feature it pointed to was deprecated. Present since v2.1.69 or earlier and still present in v2.1.294. It is not in the official reference.
| Status | Present in v2.1.294 |
|---|---|
| Added | Present since v2.1.69 or earlier |
| Category | Network and proxy |
| Official docs | Not listed |
How to set it
For one session, export it in the shell that starts Claude Code:
export CLAUDE_CODE_GB_BASE_URL=<value>
claudeTo apply it to every session, add it to the env object of a settings file:
// ~/.claude/settings.json
{
"env": {
"CLAUDE_CODE_GB_BASE_URL": "<value>"
}
}Release notes that mention it
Related variables
ANTHROPIC_BASE_URL: Custom endpoint for Anthropic services.CLAUDE_CODE_API_BASE_URL: Custom Claude Code API base URL for proxies.CLAUDE_BRIDGE_BASE_URLCLAUDE_CODE_ARTIFACT_ASSET_BASE_URLCLAUDE_CODE_ARTIFACT_LIVE_BASE_URLCLAUDE_CODE_ARTIFACT_SYNC_BASE_URLCLAUDE_CODE_ARTIFACT_VIEWER_BASE_URLCLAUDE_CODE_ARTIFACTS_API_BASE_URL
Frequently asked questions
What does CLAUDE_CODE_GB_BASE_URL do?
An internal base URL override, possibly for a "gradebook" or grading service used during internal testing. Its removal suggests the endpoint was consolidated or the feature it pointed to was deprecated.
Which Claude Code version has CLAUDE_CODE_GB_BASE_URL?
Present since v2.1.69 or earlier and still present in v2.1.294.
How do I set CLAUDE_CODE_GB_BASE_URL?
Export it before starting Claude Code (export CLAUDE_CODE_GB_BASE_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.