# Google Antigravity — Custom agents in Google plugins

- Company: Google Antigravity (antigravity.google)
- Announced: 2026-09-28T01:11:14+00:00
- Category: capability-change
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://antigravity.google/blog/custom-agents-in-google-plugins
- Record: https://forck.live/items/14747-custom-agents-in-google-plugins
- Subject: Antigravity
- Models affected: gemini-3.8-flash

Google Antigravity announced that teams at Google are packaging custom agents into official plugins available through Build with Google, and previewed three plugins with custom agent support: a Flutter & Dart accessibility auditing agent, a Firebase Security Rules agent for authoring and hardening Firestore security rules, and a Google Play pre-submission release auditing agent for Android. The post includes a detailed workflow for the Play release auditor, which operates in read-only mode to inspect policy compliance, intent security, and R8/DEX health.

## Evidence

Verbatim from https://antigravity.google/blog/custom-agents-in-google-plugins:

> Now, these teams are packaging these custom agents directly into official plugins available through Build with Google . Here is a preview of three plugins that recently added custom agent support.

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Record: https://forck.live/items/14747-custom-agents-in-google-plugins
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md