CLAUDE_SCRIPT_HOOK_ACK
Updated by Alex Sorokoletov
CLAUDE_SCRIPT_HOOK_ACK is a Claude Code environment variable. Added between v2.1.252 and v2.1.266 and still present in v2.1.295. It is not in the official reference.
| Status | Present in v2.1.295 |
|---|---|
| Added | Added between v2.1.252 and v2.1.266 |
| Category | Other |
| Official docs | Not listed |
How to set it
For one session, export it in the shell that starts Claude Code:
export CLAUDE_SCRIPT_HOOK_ACK=<value>
claudeTo apply it to every session, add it to the env object of a settings file:
// ~/.claude/settings.json
{
"env": {
"CLAUDE_SCRIPT_HOOK_ACK": "<value>"
}
}Related variables
CLAUDE_CODE_SCRIPT_CAPS: Limits per-session script invocations.CLAUDE_CODE_STOP_HOOK_BLOCK_CAP: Cap how long a stop hook can block session termination.CLAUDE_CODE_ARTIFACT_COMMENT_FAST_ACKCLAUDE_CODE_ARTIFACT_COMMENT_FAST_ACK_FIXEDANTHROPIC_BETAS: Comma-separated beta feature headers.ANTHROPIC_CUSTOM_HEADERS: Custom HTTP headers (newline-separated Key: Value).ANTHROPIC_FEDERATION_RULE_IDANTHROPIC_ORGANIZATION_ID
Frequently asked questions
Which Claude Code version has CLAUDE_SCRIPT_HOOK_ACK?
Added between v2.1.252 and v2.1.266 and still present in v2.1.295.
How do I set CLAUDE_SCRIPT_HOOK_ACK?
Export it before starting Claude Code (export CLAUDE_SCRIPT_HOOK_ACK=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.