Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.277 ·

New prompt.edit / prompt.attachment telemetry validation checks

New validation checks were added for prompt-edit and prompt-attachment telemetry replay data

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaTelemetrywhat it touches
KindInternal Changesin v2.1.277,
Under the hood

New validation checks were added for prompt-edit and prompt-attachment telemetry replay data

What

Two new validator objects were added for telemetry events: one for prompt.edit and one for prompt.attachment. Each includes functions to restore, check, and measure recorded arguments, such as origin, key, text, cursor position, input text, and attachment text, verifying that replayed telemetry data is well-formed before comparing recorded values against live ones.

Why

This strengthens the internal telemetry system's ability to catch malformed or unexpected data when comparing recorded prompt-edit and prompt-attachment events against what actually happened.

See this entry in the whole of v2.1.277 →