[BUG] Otel metrics don't seem to be emitting from claude code (log and trace work fine)

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?

I am collecting otel metrics from claude code. I am able to see logging and trace otel objects being sent to the collector but metrics do not seem to be emitted. Claude did the investigation and also confirmed no metrics seemed to be arriving at the collector. We do see the other metric types.

We've tried both grpc and http and neither affected the outcome.

What Should Happen?

CC should be emitting metrics type for ingestion into our TSDB.

Error Messages/Logs

Not seeing any errors when setting the output for metrics to console or in the cli as well. Is there a log file I can look at or enable?

Steps to Reproduce

1. Configure CC with env to enable telemetry and for metric types to send.
2. See no metric types arrive at collector.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.76

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_