CLAUDE_CODE_PWSH_PARSE_TIMEOUT_MS

Updated October 13, 2026 by Alex Sorokoletov

CLAUDE_CODE_PWSH_PARSE_TIMEOUT_MS is a Claude Code environment variable: Sets the timeout for PowerShell command parsing on Windows. The PowerShell tool shipped as a preview in v2.1.84 with CLAUDE_CODE_USE_POWERSHELL_TOOL — this variable adds a safety valve for parse operations that hang or take unexpectedly long. Added in v2.1.85 and still present in v2.1.294. It is not in the official reference.

Status	Present in v2.1.294
Added	Added in v2.1.85
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_PWSH_PARSE_TIMEOUT_MS=<value>
claude

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

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

Release notes that mention it

Claude Code v2.1.85 — 6 New Environment Variables: MCP Server Config and a 7 MB Diet

Related variables

API_FORCE_IDLE_TIMEOUT
API_TIMEOUT_MS: Request timeout in milliseconds.
BASH_DEFAULT_TIMEOUT_MS
BASH_MAX_TIMEOUT_MS
CLAUDE_AFK_TIMEOUT_MS
CLAUDE_ASYNC_AGENT_STALL_TIMEOUT_MS: Default 600,000ms (10 minutes).
CLAUDE_BYTE_STREAM_IDLE_TIMEOUT_MS
CLAUDE_CODE_CONNECT_TIMEOUT_MS

Frequently asked questions

What does CLAUDE_CODE_PWSH_PARSE_TIMEOUT_MS do?

Sets the timeout for PowerShell command parsing on Windows. The PowerShell tool shipped as a preview in v2.1.84 with CLAUDE_CODE_USE_POWERSHELL_TOOL — this variable adds a safety valve for parse operations that hang or take unexpectedly long.

Which Claude Code version has CLAUDE_CODE_PWSH_PARSE_TIMEOUT_MS?

Added in v2.1.85 and still present in v2.1.294.

How do I set CLAUDE_CODE_PWSH_PARSE_TIMEOUT_MS?

Export it before starting Claude Code (export CLAUDE_CODE_PWSH_PARSE_TIMEOUT_MS=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.