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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v0.2.78 22 Apr 2025

Configurable Telemetry Settings

New environment variables for controlling telemetry data collection:
OTEL_METRICS_INCLUDE_SESSION_ID (default: true) - Controls whether session IDs are included in metrics
OTEL_METRICS_INCLUDE_VERSION (default: false) - Controls whether the app version is included in metrics
OTEL_METRICS_INCLUDE_ACCOUNT_UUID (default: true) - Controls whether account UUIDs are included in metrics

Example usage

  # Disable session ID tracking
  OTEL_METRICS_INCLUDE_SESSION_ID=false claude
  
  # Enable version tracking
  OTEL_METRICS_INCLUDE_VERSION=true claude

See this entry in the whole of v0.2.78 →