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This is 2026.9 documentation. Coverage here is incremental: a page exists only where 2026.9 differs or is newly documented. For any other topic, switch to Current (2026.8 and earlier) in the version selector.
2026.9 developer notes for the TypeScript and JavaScript SDK are not on this preview yet. Use the current JS/TS SDK documentation until those notes land.
Building directly on the Viewer package, or on @speckle/objectloader / @speckle/objectloader2? This is the case most likely to break silently, and it’s easy to miss in the general migration comms because it isn’t “just” an SDK or API consumer. Your app stops getting data as soon as any version you load is a 2026.9 bundle: the objects endpoints return 404.Start from Building applications, which routes rendering apps and data-only apps to the right load path and explains why there is no drop-in object-graph loader.
Package-level JS/TS notes for 2026.9 are still to come. For the Viewer specifically, see Building on the Viewer package in 2026.9.
Last modified on September 28, 2026