[BUG] Claude Code for VSCode Does Not Send user.account_uuid When Metrics Are Enabled

[taiga533]

Preflight Checklist

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

What's Wrong?

When using the Claude Code extension for VSCode with the following settings, metrics are sent, but user.account_uuid and email are not. Please fix this.

cat /etc/claude-code/managed-settings.json
{
  "env": {
    "CLAUDE_CODE_ENABLE_TELEMETRY": "1",
    "OTEL_METRICS_EXPORTER": "otlp",
    "OTEL_EXPORTER_OTLP_PROTOCOL": "grpc",
    "OTEL_EXPORTER_OTLP_ENDPOINT": "http://localhost:4317"
  }

Suspected Cause

It is suspected that the Claude Code extension for VSCode does not refer to the oauthAccount key in ~/.claude.json when sending metrics. Furthermore, when ~/.claude.json does not exist and the user logs in via the Claude Code extension, the oauthAccount key in ~/.claude.json was null.

The ~/.claude.json file generated after the initial authentication by the Claude Code extension, with the Claude Code CLI not being installed.

{
  "installMethod": "unknown",
  "autoUpdates": true,
  "cachedStatsigGates": {
    "tengu_migrate_ignore_patterns": false,
    "tengu_disable_bypass_permissions_mode": false,
    "tengu_tool_pear": false
  },
  "firstStartTime": "2025-11-04T08:51:11.866Z",
  "userID": "xxxxx",
  "sonnet45MigrationComplete": true,
  "fallbackAvailableWarningThreshold": 0.2
}

What Should Happen?

Users who are only using Claude code for VS Code via GUI should be able to appropriately collect attributes like user.account_uuid along with metrics via OTLP.

Error Messages/Logs

Steps to Reproduce

1. Prepare an unauthenticated environment where claude code for vscode is installed and metrics collection is configured (referencing the documentation for setting up metrics collection). Ensure ~/.claude.json does not exist.
2. Open the GUI of claude code for vscode and authenticate with your Anthropic Account.
3. Check the user.account_uuid attribute of the collected metrics.

Claude Model

None

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

2.0.31 (Claude Code for VS Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

No response