MCP Tasks (async): Why Aren't Any Agents Supporting Them? — Cornelia Davis, Temporal
MCP Tasks V2 spec with radical changes is coming in July, explaining why no agents have implemented it yet.
“there's some pretty radical changes. So, I'm going to show you what's happening with V2”
Cornelia Davis of Temporal explains why no MCP clients have implemented the async Tasks specification: the November V1 spec was marked experimental and a substantially revised V2 is due in July 2026. The imminent V2 rewrite retroactively validates agent builders' caution, and signals that async tool execution in MCP is about to become a real, stable capability. For teams building agentic workflows, this is a heads-up to watch the V2 release before committing to any async MCP implementation.