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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.257 ·

Optional HIPAA history-retention pruning

HIPAA-configured organizations get an extra retention pass that prunes stale entries from local history files.

TierYou'll noticehow much it should matter to you
Useful3my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaData Retentionwhat it touches
KindNew Featuresin v2.1.257,
You'll notice

HIPAA-configured organizations get an extra retention pass that prunes stale entries from local history files.

During the periodic retention sweep, organizations on a HIPAA-flagged configuration now get an additional prune pass that rewrites or deletes stale entries from the local history.jsonl and related history files. Results are tracked via entriesPruned/errors and reported as historyEntriesPruned in tengu_retention_sweep telemetry.

Read from
Names in the bundlehistory.jsonl
Feature flag
tengu_hipaa_history_retention_prune Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.257: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.257. It isn't a statement about your account. What a flag value here can and cannot tell you

Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up history.jsonl, on Explore the .claude directory. | `~/.claude/history.jsonl` | Up-arrow prompt recall, `Ctrl+R` history search, and `!` shell-command completion | claude-directory see the edit
How sure we are
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up history.jsonl, on Explore the .claude directory.
The name it cites is new in this buildNew in this build: tengu_hipaa_history_retention_prune

See this entry in the whole of v2.1.257 →

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