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v0.8.21

heygen-com/hyperframesv0.8.21Aug 31, 2026by github-actions[bot]

AI Summary

Studio agents gain WebMCP capabilities to author motion, edit content, and inspect elements. Preview reliability is improved with asset refresh fixes and better handling of player failures.

Key Highlights

  • Studio agents can see, select, and edit elements via WebMCP
  • Agents can author motion through WebMCP
  • Preview assets refresh reliably
  • Hidden sub-composition layers can be restored
  • Player failures surface instead of stalling silently

New Features

  • Studio agent motion authoring
  • Studio agent text and style editing
  • Studio agent selection and playhead control
  • Hidden sub-composition layer restoration

Full Release Notes

# HyperFrames v0.8.21

Released on 2026-08-31.

Studio agents can now see the current frame, select and inspect elements, edit content, transform layouts, and author motion through WebMCP.
Preview assets refresh reliably, hidden sub-composition layers can be restored, and player failures now surface instead of stalling silently.

## Features

- **Studio:** Let an agent author motion ([2d6b055f3](https://github.com/heygen-com/hyperframes/commit/2d6b055f310ef076ce812912e8d2c469ba6f2795), [#3520](https://github.com/heygen-com/hyperframes/pull/3520)).
- **Studio:** Let an agent edit text and styles, guarded ([f84b4c23d](https://github.com/heygen-com/hyperframes/commit/f84b4c23dcc8b4acbb597e3ad1d293788eaa379b), [#3518](https://github.com/heygen-com/hyperframes/pull/3518)).
- **Studio:** Give an agent eyes with studio_frame ([3337cc899](https://github.com/heygen-com/hyperframes/commit/3337cc899071c40e0bf3c6bc030d91c499c639d0), [#3516](https://github.com/heygen-com/hyperframes/pull/3516)).
- **Studio:** Let an agent drive Studio's selection and playhead ([0e558d591](https://github.com/heygen-com/hyperframes/commit/0e558d591658afcba59a84d53d75112b963a9f0a), [#3515](https://github.com/heygen-com/hyperframes/pull/3515)).

## Fixes

- **Studio Server:** Revalidate preview assets on every request ([44c90dd7f](https://github.com/heygen-com/hyperframes/commit/44c90dd7ff79d0564d676a295d6198e3974774d1), [#3565](https://github.com/heygen-com/hyperframes/pull/3565)).
- **Studio:** Let a hidden sub-composition child be shown again ([f18964de0](https://github.com/heygen-com/hyperframes/commit/f18964de0c3a90b8f8cf155fd2eefda5f47654b6), [#3559](https://github.com/heygen-com/hyperframes/pull/3559)).
- **Player/runtime:** Rebind timelines and bound paused seeks ([61ba800a5](https://github.com/heygen-com/hyperframes/commit/61ba800a5db0825afb40f061fb6df5498dfdb37d), [#3489](https://github.com/heygen-com/hyperframes/pull/3489)).
- **Player:** Report and fail closed on runtime delivery errors ([859ac622c](https://github.com/heygen-com/hyperframes/commit/859ac622c2991250ed28fbdcee4b6d2a8efea6ff), [#3472](https://github.com/heygen-com/hyperframes/pull/3472)).

## Docs & Examples

- **Changelog:** Weekly digest 2026-08-24–2026-08-31 ([1cb3c749c](https://github.com/heygen-com/hyperframes/commit/1cb3c749c88d2fa44211d69a8950d36dd4fe81bf), [#3563](https://github.com/heygen-com/hyperframes/pull/3563)).

## Catalog

- **Registry:** Hw write-on wave — hw-write-title block + control surfaces for the handwritten family ([5b45bcc16](https://github.com/heygen-com/hyperframes/commit/5b45bcc16ddc1308fdbadef81f436e56bbc1d559), [#3557](https://github.com/heygen-com/hyperframes/pull/3557)).

## Full changelog

https://github.com/heygen-com/hyperframes/compare/v0.8.20...v0.8.21