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3 min read

Drevon 1.1.3: Antigravity joins the lineup, and updates now install what they need

D
Drevon TeamAugust 19, 2026

Drevon 1.1.3 adds a fifth agent, changes how Gemini signs in, and fixes the thing that made the last release feel incomplete on machines that had already installed Drevon.

Antigravity is now a Drevon agent

Google's Antigravity CLI sits alongside Claude Code, Codex, Gemini and Copilot with the same treatment the others get: streaming output, sessions that resume across turns, automatic session titles, skill generation, and a real diagnosis when a run stops early instead of a stderr dump.

It gets the browser too. An Antigravity agent opens tabs in your signed-in Drevon browser profile, so it can work on sites you are already logged into.

Pick it when you create an agent, clone one, or during onboarding. The order is now Claude, Codex, Gemini, Antigravity, Copilot everywhere you choose an agent.

Two ways to sign in to Antigravity

Sign in with Google and Drevon opens the consent page for you, takes the verification code if Google asks for one, and flips the screen to signed in without a restart. If you work out of a Google Cloud project instead, there is a field for the project ID right next to it.

Drevon confirms the credential with Google before it calls you signed in. A sign-in that the server refuses stays signed out, so an agent cannot report itself as ready and then fail on the first turn.

Gemini is API key only

Google closed the free Code Assist tier behind Gemini CLI's Google sign-in and now points people at Antigravity. Signing in with a Google account was returning an eligibility error partway through a run, which is a worse experience than not offering it.

So Gemini now takes an AI Studio API key, which is what Google's own documentation describes, and Google-account sign-in lives on the Antigravity card. Keys are encrypted on your Mac with the system keychain. If you were already using a Gemini API key, nothing changes.

Updates install the agents they add

When 1.1.2 added Gemini, it only reached people setting Drevon up for the first time. If you already had Drevon installed, the update landed without the Gemini CLI, and the Gemini card led to a button that could not do anything.

Drevon now tracks which release each CLI arrived in. When you update, it installs the ones you are missing in the background and shows you the progress, so Antigravity is ready on this release the same way Gemini is ready if you skipped it. It repairs a stale CLI as well as a missing one, and if an install fails, the next launch retries instead of marking the job done.

Anywhere an agent needs a CLI you do not have, there is now an install button that installs it and continues what you were doing, rather than a retry that fails the same way.

Fixes and polish

  • Antigravity answers appeared twice in the chat; the streamed copy is now the only one
  • The Google consent URL filled the sign-in dialog and pushed the code box off screen, and is now a link
  • Antigravity onboarding showed Anthropic's sign-in copy, and its buttons were off centre
  • Sign-in could report failure moments after it actually succeeded
  • Antigravity sign-in could hang for the full timeout on some machines instead of finishing in seconds
  • Gemini configs with comments are no longer overwritten when Drevon updates auth settings
  • Gemini sign-in worked on new installs but not on ones carrying the older settings layout