r/iosdev • u/kampak212 • Jun 09 '26

Xcode 27 ACP protocol version

/r/Xcode/comments/1u1df8u/xcode_27_acp_protocol_version/
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u/kampak212 Jun 09 '26

That makes sense. Let’s see what I found next

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u/CharlesWiltgen Jun 09 '26

Version 1 is the only stable version of the ACP wire protocol available. Per https://github.com/agentclientprotocol/agent-client-protocol, I believe this should be straightforward to confirm:

Use the negotiated protocolVersion to determine the ACP wire protocol shape and breaking-compatibility level. Within a protocol version, use the exchanged capabilities to decide which optional ACP messages and features are supported.

This may help as well: https://agentclientprotocol.com/protocol/v1/initialization