[BUG] Claude Code doesn't work with `NODE_OPTIONS=--use-system-ca`

[GRiMe2D]

Preflight Checklist

• I have searched existing issues and this hasn't been reported yet
• This is a single bug report (please file separate reports for different bugs)
• I am using the latest version of Claude Code

What's Wrong?

Enterprise setup forces to use Netskope and it installs custom CA. In order to work I have to put export NODE_OPTIONS=--use-system-ca in zshrc. But that ENV variable conflicts with Claude Code 2.1.181 (Homebrew latest)

The only solution is to unset NODE_OPTIONS env variable before starting Claude Code.

What Should Happen?

Claude Code should respect NODE_OPTIONS=--use-system-ca env variable in order to allow both NodeJS and Claude Code work

Error Messages/Logs

> Unable to connect to API: SSL certificate verification failed. Check your proxy or corporate SSL certificates

Steps to Reproduce

1. Use some custom CA (Netskope for example)
2. Set NODE_OPTIONS=--use-system-ca env variable
3. Verify that plain nodejs can access SSL

    node -e 'fetch("https://example.com").then(r => console.dir(r))'
   

    Response {
      [Symbol(state)]: {
        aborted: false,
        rangeRequested: false,
        timingAllowPassed: true,
        requestIncludesCredentials: true,
        type: 'default',
        status: 200,
        timingInfo: {
          startTime: 82.898083,
          redirectStartTime: 0,
          redirectEndTime: 0,
          postRedirectStartTime: 82.898083,
          finalServiceWorkerStartTime: 0,
          finalNetworkResponseStartTime: 226.452792,
          finalNetworkRequestStartTime: 175.629708,
          endTime: 0,
          encodedBodySize: 0,
          decodedBodySize: 0,
          finalConnectionTimingInfo: [Object]
        },
        cacheState: '',
        statusText: 'OK',
        headersList: HeadersList {
          cookies: null,
          [Symbol(headers map)]: [Map],
          [Symbol(headers map sorted)]: null
        },
        urlList: [ URL {} ],
        body: { stream: [ReadableStream], source: null, length: null }
      },
      [Symbol(headers)]: Headers {}
    }
   

4. Open Claude Code
5. Say Hi
6. Claude Code responds

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

2.1.181 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

Disabling NODE_OPTIONS will fix Claude Code. But ordinary node execution now is broken. The previous fetching of https://example.com will fail due to SSL cert mismatch

[github-actions]

Found 3 possible duplicate issues:

1. [BUG] Native Claude Code not using system certs on MacOS #20194
2. [BUG] Hosted MCP OAuth initiation ignores NODE_EXTRA_CA_CERTS on corporate MITM networks (v2.1.113+) #55760
3. Claude Desktop Code tab ignores NODE_EXTRA_CA_CERTS on Windows MSIX install behind corporate SSL proxy #70394

This issue will be automatically closed as a duplicate in 3 days.

• If your issue is a duplicate, please close it and 👍 the existing issue instead
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🤖 Generated with Claude Code

[GRiMe2D]

Workaround is to put in ~/.zshrc or ~/.bashrc (preferable later than nvm)

# Use system ca always (including netskope, but exclude Claude Code)
alias node='NODE_OPTIONS=--use-system-ca node'