GoogleAntigravity

Plugin MCP namespacing, conversation memory leak fixes, oversized file guardrails, and unsandboxed rule…

Saturday, 12 September 2026

AI summary

Written by AI from the official notes. Check them for exact details.

This release improves diagnostics, fixes memory leaks, and enhances file handling in Gemini and Antigravity.

Enhanced diagnostics for unsandboxed permission rules migration.
Improved responsiveness for large conversation history on /resume.
Automatically namespaces plugin MCP servers to avoid collisions.
Fixed memory leak from background step-cache eviction.
Rejected oversized binary files and non-UTF-8 formats before loading.

Why it matters: Developers and users of Gemini and Antigravity should care for improved performance and stability.

Official notes on antigravity.google

Full release notes9 changes

Enhances startup migration diagnostics for unsandboxed permission rules, speeds up /resume with stale caches, automatically namespaces plugin MCP servers to avoid collision, resolves step-cache goroutine leaks, and fixes critical issues with Gemini API thinking block retention, oversized binary file loading, artifact reviews, and database cleanup.

Improved the startup warning for deprecated unsandboxed permission rules across CLI, shared, and project configuration files to list each affected file path, up to five offending rules, and step-by-step instructions for migrating them to command rules.
Improved /resume startup responsiveness when opening a large conversation history with a cold or stale summary cache.
Fixed MCP servers bundled inside plugins colliding with each other or with user-configured servers in mcp_config.json when they shared the same server name by automatically namespacing plugin MCP servers as _ .
Fixed a memory leak where opening or scanning conversations left background step-cache eviction goroutines running for the rest of the session, significantly reducing memory usage after opening /resume or switching conversations.
Fixed view_file attempting to parse non-UTF-8 binary files as text or loading files larger than 100 MB into the model context; unsupported binary formats and oversized files are now rejected with a clear error before overflowing the context window.
Fixed Gemini API (GEMINI_API_KEY) sessions dropping model thinking blocks from prior turns on subsequent user messages and failing to propagate thought signatures on text and thought parts.
Fixed artifact review failing to trigger when a directory name above .gemini/ matched a skipped path component such as scratch, prevented conversation forks and snapshot reverts from copying internal .system_generated/subagents and .system_generated/worktrees directories, and cleaned up subagent metadata records when deleting a conversation.
Fixed deleted conversations being recreated as empty, schema-less SQLite database files when background queries reconnected after deletion.
Fixed conversations launched without a workspace folder inheriting workspace paths and customizations from other open sessions.

Full release notes9 changes

Improved the startup warning for deprecated unsandboxed permission rules across CLI, shared, and project configuration files to list each affected file path, up to five offending rules, and step-by-step instructions for migrating them to command rules.
Improved /resume startup responsiveness when opening a large conversation history with a cold or stale summary cache.
Fixed MCP servers bundled inside plugins colliding with each other or with user-configured servers in mcp_config.json when they shared the same server name by automatically namespacing plugin MCP servers as _ .
Fixed a memory leak where opening or scanning conversations left background step-cache eviction goroutines running for the rest of the session, significantly reducing memory usage after opening /resume or switching conversations.
Fixed view_file attempting to parse non-UTF-8 binary files as text or loading files larger than 100 MB into the model context; unsupported binary formats and oversized files are now rejected with a clear error before overflowing the context window.
Fixed Gemini API (GEMINI_API_KEY) sessions dropping model thinking blocks from prior turns on subsequent user messages and failing to propagate thought signatures on text and thought parts.
Fixed artifact review failing to trigger when a directory name above .gemini/ matched a skipped path component such as scratch, prevented conversation forks and snapshot reverts from copying internal .system_generated/subagents and .system_generated/worktrees directories, and cleaned up subagent metadata records when deleting a conversation.
Fixed deleted conversations being recreated as empty, schema-less SQLite database files when background queries reconnected after deletion.
Fixed conversations launched without a workspace folder inheriting workspace paths and customizations from other open sessions.