Source Intelligence

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 v2.1.246

Anthropic-internal metrics export refuses to send credentials to a mismatched host

Under the hood
Useful1 Signal3
Telemetry

Internal metrics export won't send a credential to a host it wasn't minted for.

What

The internal BigQuery metrics exporter now checks that its credential actually belongs to the host it is about to contact. If not it skips the export, skips the organisation opt-out check, and sends with no authentication headers rather than failing.

Details
  • A mismatch is classified as misrouted_credential with the message "credential withheld: this telemetry endpoint is not the host it belongs to".
  • There is a bypass field, isAntEndpointOverride, but the constructor sets it to false unconditionally, so it cannot be taken in this build.
  • The opt-out request switched from fetching a credential asynchronously to sending none, relying on headers supplied by the router, and reports "Auth error: no credential usable for the metrics opt-out check" when none is usable.
Evidence

BigQuery metrics export: credential does not belong to the metrics endpoint host, skipping

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

See this entry in the whole of v2.1.246 →