Under the hood
The SDK's internal session bridge gained savedAgentMessages and requestMessages callbacks
What
The internal bridge object that Claude Code's SDK and plugins use to talk to a running session (the same object that already exposed things like canUseTool and toast) now also exposes two new functions: savedAgentMessages and requestMessages. They are wired up to the session's stored data and its computed list of tools.
Why
This is internal plumbing rather than something most users will interact with directly. It gives SDK integrations and plugins a way to read back saved agent messages and request messages for a session, which they could not do through this bridge before.
Names in the bundlesavedAgentMessagesrequestMessages
Documented inapi/build-with-claude/fallback-credit
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The writer flagged doubt
The finding does not say what consumes these new callbacks or what user-facing behavior they enable.