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A comment on Launch HN: Skillsync (YC W26) – AI chat sessions made portable across agents.

Re:Launch HN: Skillsync (YC W26) – AI chat sessions made por... by Ishwar170695 on Sunday September 20, 2026 @02:04PM (#49778277)
The portability angle is interesting. We measured coding-agent sessions and found ~94.5% of the accumulated context was reused across turns.

Two questions on the translation side: what gets dropped or normalized when a session crosses agents (reasoning blocks, tool-call IDs, provider-specific message types)? And is the output serialized deterministically, so the receiving agent's cache can warm up and stay warm after the move?

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Re:Launch HN: Skillsync (YC W26) – AI chat sessions made por... by Narsagna on Monday September 21, 2026 @04:31PM (#49792971)
Yes it is deterministic, there's no ai here. Everything is retained including tool calls, reasoning and handed off to the other agent

Would love to know more about the study, can you tell me how you went about it?

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