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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.219 ·

Telemetry string extractors routed through a sanitizer

Error names and file positions pass through a sanitizer before telemetry; nothing changes for you.

Under the hood Internal Changes
JSON All of v2.1.219
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
TelemetryArea: what it touches
Internal ChangesKind: in v2.1.219,
Internal ChangesSection of the release
What

Error names, errnos and file:line:col values are now marked as vetted before reaching telemetry.

Details
  • The already-regex-validated result of each extractor passes through a wrapper on its way out.
  • Literal fallbacks at call sites are wrapped too, including the "unknown" errno defaults in fleet dispatch, render-error reporting and respawn logging.
  • Behaviourally invisible.
Evidence

errno_code

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

See this entry in the whole of v2.1.219 →

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