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 v2.1.275 ·

Forked (inline) subagents no longer inherit their parent's tool-call replay log

Forked inline subagents now start with an empty tool-call replay log instead of inheriting the parent's

TierYou'll noticehow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaSubagentswhat it touches
KindBug Fixesin v2.1.275,
You'll notice

Forked inline subagents now start with an empty tool-call replay log instead of inheriting the parent's

What

When launching a forked (inline) subagent, Claude Code previously built its tool-call replay log either by reusing an existing one from tool state or reconstructing it from resume messages. It now always starts the forked subagent with an empty log.

Why

This means a forked subagent no longer carries over its parent's history of prior tool calls into its own replay log, giving it a clean slate rather than inherited context from the parent session.

See this entry in the whole of v2.1.275 →