crossSessionInbound
A Claude Code settings key, read out of the shipped bundle. It was in the build from v2.1.224 and was gone by v2.1.284.
Choose whether Claude Code delivers messages from your other sessions, shows a notice without delivering them, or refuses them
Anthropic's own wording. Read off All settings, captured 2026-10-22.
In the changelogs
10Releases whose published page names crossSessionInbound.
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v2.1.271
peer_message_hold: visibility into parked cross-session messages
A new peer_message_hold event reports when a message from another session is parked instead of delivered, and how it's later resolved
found in this entry's text, named in this entry
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v2.1.248
Bad
crossSessionInboundvalues are now named where they surfaceA bad crossSessionInbound value is now named directly instead of a generic settings complaint.
named in this entry, found in this entry's text
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v2.1.248
Settings validation checks crossSessionInbound
A bad crossSessionInbound value now gives you a settings error instead of passing silently.
named in this entry, found in this entry's text
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v2.1.238
Messages to another session check the recipient first, and each session reports its own inbound state
Messaging another session checks the recipient first and gives a specific reason when refused.
found in this entry's text
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v2.1.225
Held cross-session messages name managed or repo settings as the cause
When a peer message is held, you now see whether org or repo settings caused it.
found in this entry's text
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v2.1.225
Held peer messages now say which settings tier held them
When a cross-session message is held, you now see whether org, repo or local settings did it.
named in this entry, found in this entry's text
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v2.1.224
Cross-session messages from a coordinator are now delivered by default
Task notifications from a coordinator session now arrive automatically unless you set crossSessionInbound to refuse or hold.
named in this entry, found in this entry's text
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v2.1.224
New setting:
crossSessionInboundcrossSessionInbound accepts accept, hold or refuse for messages arriving from your other sessions.
named in this entry, found in this entry's text
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v2.1.224
Messages relayed between your own sessions are now labelled as such
Messages relayed from your other sessions are now tagged as peer sends rather than looking like scheduled triggers.
found in this entry's text
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v2.1.224
Messages from other sessions can be held for your approval
Messages from a session with a mismatched permission mode are held and shown with an approve/deny dialog.
found in this entry's text
First cited
10The earliest release whose published evidence quoted crossSessionInbound was v2.1.224, 7 Aug 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
4 further spans in the ledger name it. The list above is the earliest first and stops at 6.
Presence across releases
2Build by build
73One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
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.