Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
AgentsArea: what it touches
Internal ChangesKind: in v2.1.224,
Internal ChangesSection of the release
What
Message delivery telemetry can now flag that the caller waited synchronously for completion, alongside the existing route and duration fields.
Details
Agent-resume branches report on both success and failure under the route resume.
The evicted-agent mailbox path sets the blocked-wait flag.
Evidence
blocked_wait
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeAdded cross-session SendMessage: Claude Code sessions can now message each other, on any of your machines, with ListAgents to discover them…