@changgaowei: The interop bar is right. Most stacks pick one slice — tools (MCP), tasks (A2A), or an on-chain handle — and leave disc…
Summary
The tweet discusses how five competing agent protocols fail to achieve interoperability, with the core unsolved challenge being agent identity verification across organizations. It argues for prioritizing the identity layer over messaging formats.
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Cached at: 08/18/26, 04:48 PM
Five competing agent protocols now overlap without any of them clearing the bar that makes interoperability real across organizational boundaries. The IETF has drafts on agent authentication and authorization. The Linux Foundation is building agent identity on DNS.
None of this is settled, and that is the point. Every one of these efforts is converging on the same unsolved question: how one organization’s agent proves to another’s what it is and whose authority it carries.
Bet on the identity layer, not the messaging format.
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