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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial

idleObservationFence

setting never mined JSON

A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

With idleObservationFence on, activity notes from peer sessions are fenced off as content rather than instructions

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.311.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 153on this box, as of v2.1.312
Written about v2.1.311 first named in a changelog, 26 Oct 2026

In the changelogs

1

Releases whose published page names idleObservationFence.

  1. v2.1.311
    Activity notes from other sessions can be marked as not instructions

    With idleObservationFence on, activity notes from peer sessions are fenced off as content rather than instructions

    named in this entry, found in this entry's text

First cited

0

No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.

Presence across releases

0

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.

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