CLAUDE_CODE_DIR_SYNC_STREAM

Updated October 14, 2026 by Alex Sorokoletov

CLAUDE_CODE_DIR_SYNC_STREAM is a Claude Code environment variable. Removed in v2.1.285, so current releases ignore it. It is not in the official reference.

Status	Removed in v2.1.285
Added	Added between v2.1.247 and v2.1.252
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_DIR_SYNC_STREAM=<value>
claude

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

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

Related variables

CLAUDE_BYTE_STREAM_IDLE_TIMEOUT_MS
CLAUDE_CODE_DISABLE_MEMORY_STREAM_LIST: Turns off the incremental metadata-streaming path inside multi-store memory sync.
CLAUDE_CODE_SYNC_PLUGIN_INSTALL_TIMEOUT_MS: Timeout for synchronous plugin install.
CLAUDE_CODE_SYNC_SKILLS_INSTALL_TIMEOUT_MS
CLAUDE_CODE_SYNC_SKILLS_WAIT_TIMEOUT_MS
CLAUDE_ENABLE_STREAM_WATCHDOG: Enable stream health monitoring.
CLAUDE_STREAM_FIRST_BYTE_TIMEOUT_MS
CLAUDE_STREAM_IDLE_TIMEOUT_MS: Configures the streaming idle watchdog threshold — the maximum time Claude Code waits for data on an open SSE connection before treating it as stalled.

Frequently asked questions

Which Claude Code version has CLAUDE_CODE_DIR_SYNC_STREAM?

Removed in v2.1.285, so current releases ignore it.

How do I set CLAUDE_CODE_DIR_SYNC_STREAM?

Export it before starting Claude Code (export CLAUDE_CODE_DIR_SYNC_STREAM=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.