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.

All of v2.1.238 Home All releases olderv2.1.237 v2.1.239newer
Claude Code v2.1.238

Background session records carry a spare flag

Not switched on
Useful1 Signal4
Sessions Notable

Background session records can be flagged as spare, but nothing in this build decides when a spare gets spawned.

A spare-session flag and claim telemetry are parsed and wired, but no code sets the condition that spawns one.

What

Parsing of background session records now reads a spare boolean, and the telemetry around claiming a spare session survives a reworked spawn path. What decides when a spare session is actually spawned is not set anywhere in this build.

Details
  • The claim failure counter is tengu_bg_spare_claim_fail.
Evidence

tengu_bg_spare_claim_fail

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

See this entry in the whole of v2.1.238 →