CLAUDE_CODE_DISABLE_PRECOMPACT_SKIP

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_DISABLE_PRECOMPACT_SKIP is a Claude Code environment variable: Disable skipping pre-compaction checks. 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	Context and compaction
Official docs	Not listed

How to set it

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

export CLAUDE_CODE_DISABLE_PRECOMPACT_SKIP=<value>
claude

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

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

Release notes that mention it

Related variables

CLAUDE_CODE_SKIP_PRECOMPACT_LOAD: Optimize large session file loading.
CLAUDE_CODE_DISABLE_1M_CONTEXT: Disable extended 1M token context window.
DISABLE_AUTO_COMPACT: Disable automatic compaction only (manual /compact still works).
DISABLE_CLAUDE_CODE_SM_COMPACT: Disable session memory compaction.
DISABLE_COMPACT: Disable all compaction (manual + auto).
DISABLE_MICROCOMPACT: Micro-compaction (small context cleanups).
CLAUDE_AFTER_LAST_COMPACT: Request only conversation logs after last compaction.
CLAUDE_AUTOCOMPACT_PCT_OVERRIDE: Set when auto-compaction triggers (percentage threshold).

Frequently asked questions

What does CLAUDE_CODE_DISABLE_PRECOMPACT_SKIP do?

Disable skipping pre-compaction checks

Which Claude Code version has CLAUDE_CODE_DISABLE_PRECOMPACT_SKIP?

Present since v2.1.69 or earlier and still present in v2.1.294.

How do I set CLAUDE_CODE_DISABLE_PRECOMPACT_SKIP?

Export it before starting Claude Code (export CLAUDE_CODE_DISABLE_PRECOMPACT_SKIP=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.