Beta Changelog
ScriptCat's version releases are divided into two main branches: stable releases and pre-release versions. For the stable release changelog, please see: Changelog
Pre-release versions are released before the official stable version. They are typically used to test new features. Pre-release version numbers contain a pre-release identifier, for example:
1.0.0-beta.1.
You can obtain pre-release versions from the Release page or from the extension store pages below:
Additionally, besides pre-releases, ScriptCat builds the extension on Github Action after each code commit is merged to the main branch. If you want to experience the latest features or fixes, you can download them from the Github Action page.
1.5.0-beta.2 (2026-08-21)
This pre-release improves the built-in Agent's conversation, tool-loop, persistence, and MCP reliability, reworks the popup site-scope operations into a reversible state machine, and fixes several cloud-sync and update-page issues.
🚀 Major New Features
- ♻️ Agent conversation, tool-loop, persistence, and MCP reliability improvements #1545 (#1549) (by @cyfung1031)
- ✨ Popup site-scope operations: S1–S4 reversible state machine #1590 (#1666) (by @CodFrm)
🧩 GM API Changes
- 🐛 Fix GM_download not triggering onerror when passed an empty url (#1619) (by @cyfung1031)
🎨 UI Improvements
- 💄 Update-page / install-page / editor UX fixes, and correct update records overwritten by stale check snapshots #1650 #1648 #1651 (#1677) (by @CodFrm)
🐛 Bug Fixes
- 🐛 Cloud sync no longer triggers on service-worker cold starts; alarm period changed to 30 minutes #1670 (#1678) (by @CodFrm)
- 🐛 Fix the install/update page not closing properly #1669 (#1675) (by @CodFrm)
1.5.0-beta.1 (2026-08-06)
This pre-release highlights two major features — External Access (MCP bridge) and a script recycle bin — officially supports Firefox MV3, adds Korean, Turkish, and Brazilian Portuguese, and fixes a number of GM API, cloud-sync, and editor issues.
