CLAUDE_CODE_EXTRA_BODY
Updated by Alex Sorokoletov
CLAUDE_CODE_EXTRA_BODY is a Claude Code environment variable: Additional JSON merged into API request bodies. Present since v2.1.69 or earlier and still present in v2.1.294. It is listed in the official reference.
| Status | Present in v2.1.294 |
|---|---|
| Added | Present since v2.1.69 or earlier |
| Category | Other |
| Official docs | Listed |
How to set it
For one session, export it in the shell that starts Claude Code:
export CLAUDE_CODE_EXTRA_BODY=<value>
claudeTo apply it to every session, add it to the env object of a settings file:
// ~/.claude/settings.json
{
"env": {
"CLAUDE_CODE_EXTRA_BODY": "<value>"
}
}Release notes that mention it
Related variables
CLAUDE_CODE_EXTRA_METADATA: Passes additional metadata to API requests beyond what Claude Code includes by default.ANTHROPIC_BETAS: Comma-separated beta feature headers.ANTHROPIC_CUSTOM_HEADERS: Custom HTTP headers (newline-separated Key: Value).ANTHROPIC_FEDERATION_RULE_IDANTHROPIC_ORGANIZATION_IDANTHROPIC_WORKSPACE_IDBETA_TRACING_ENDPOINT: Custom endpoint for beta tracing.CLAUDE_AFK_COUNTDOWN_MS
Frequently asked questions
What does CLAUDE_CODE_EXTRA_BODY do?
Additional JSON merged into API request bodies
Which Claude Code version has CLAUDE_CODE_EXTRA_BODY?
Present since v2.1.69 or earlier and still present in v2.1.294.
How do I set CLAUDE_CODE_EXTRA_BODY?
Export it before starting Claude Code (export CLAUDE_CODE_EXTRA_BODY=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.