[Antigravity 2.17.0] Plugin installation fails: SHA256 Checksum mismatch / Missing version checksums in registry for Build with Google plugins

Google Antigravity
1

Environment:

Description:
On a fresh installation of Antigravity 2.17.0, attempting to download or install most plugins from “Settings > Customizations > Build with Google Plugins” fails due to a desynchronization between the newly updated zip bundles hosted on gstatic and the metadata hash registry returned by GetBuildWithGooglePlugins.

Errors encountered:

  1. Google Antigravity SDK:
    Plugin Operation Error: Checksum mismatch for plugin google-antigravity-sdk: expected 150997be4608ea1d9b4f1b970caddc909cf8f4163c59224934c6621daba03569, got 888d9affe6198640f605f1471a166d2141c659ff664ee1931e5717db06035ef7 (error ID: 924db33ef6ea4f748140fdd864b8ef21)

  2. Chrome DevTools:
    Plugin Operation Error: Checksum mismatch for plugin chrome-devtools-plugin: expected 9e5f2e62c9dbc7165df7eb546202a3830aab31764fa0675bbf6611a1ec701ac8, got 93b0f247820edb046c69c3df2fe166a02e201c64b5b1c780d29523b96af77256 (error ID: a6e5e348f2044406a6c87e50d957062e)

  3. Modern Web Guidance:
    Plugin Operation Error: No SHA256 checksum registered for plugin modern-web-guidance-plugin version 1.0.6 (error ID: de8169389dd240e3830af21e876d84cb)

  4. Science:
    Plugin Operation Error: No SHA256 checksum registered for plugin science version 1.2.2 (error ID: 7544872b5956469a932f86f58181ef82)

Root Cause:

  • The zip files on https://www.gstatic.com/antigravity/buildWithGoogle/<uid>/<uid>.zip have been updated with new builds/versions.
  • The versionShas map in the catalog response:
    • For google-antigravity-sdk still expects the old hash 150997be... (from 0.0.7), but the file in gstatic now hashes to 888d9affe6....
    • For chrome-devtools-plugin still expects 9e5f2e62..., but the gstatic file hashes to 93b0f247....
    • For modern-web-guidance-plugin and science, the registry only has entries up to versions 1.0.4 and 1.2.1 respectively, while the UI tries to install versions 1.0.6 and 1.2.2.
  • Only the firebase plugin installs properly because its gstatic hash (02f0f959...) matches versionShas["1.0.1"].

Steps to Reproduce:

  1. Open Antigravity 2.17.0.
  2. Go to Settings > Customizations.
  3. Try to download “Google Antigravity SDK”, “Chrome DevTools”, “Modern Web Guidance”, or “Science”.
  4. The operation immediately throws Checksum Mismatch / No SHA256 registered errors.
2

Hi!

Modern Web Guidance: is back! still waiting for:

  • Android CLI
  • Google Antigravity SDK
  • Science
  • Chrome DevTools
  • Dart and Flutter
  • Google Maps Platform
  • Data Agent Kit
  • Gemini API
3

Hi!

Many plugins are back:

  • Android CLI
  • Google Antigravity SDK
  • Science
  • Chrome DevTools
  • Dart and Flutter
  • Google Maps Platform
  • Data Agent Kit

Now just Gemini API is falling with: Plugin Operation Error:No SHA256 checksum registered for plugin gemini-api version 2.2.0 (error ID: c9f428de11f448e090e3ce3b9aec50b4)