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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 v2.1.228

Datadog flush interval read from a second variable name

Use it now
Useful2 Signal2
Telemetry Notable not in their notes

A telemetry flush interval can now be set with either of two environment variable names.

CLAUDE_CODE_DATADOG_FLUSH_INTERVAL_MSCLAUDE_CODE_DD_ERROR_TRACKING_FLUSH_INTERVAL_MS
What

One flush-interval call site now reads CLAUDE_CODE_DATADOG_FLUSH_INTERVAL_MS. The older CLAUDE_CODE_DD_ERROR_TRACKING_FLUSH_INTERVAL_MS is still registered and still read elsewhere, so both names are live and set whichever the call site you care about uses.

Evidence

CLAUDE_CODE_DATADOG_FLUSH_INTERVAL_MS

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.228 →