Antigravity memory grows to 11-12 GB on macOS; repeated LSP / Unleash / MCP errors appear to drive memory growth

Google Antigravity
1

Title: Antigravity memory grows to 11-12 GB on macOS; repeated LSP / Unleash / MCP errors appear to drive memory growth

Hi, I’m seeing a serious memory growth issue in Antigravity on macOS Apple Silicon.

Environment

  • Antigravity version: 1.107.0
  • Electron: 39.2.3
  • macOS: Apple Silicon
  • Date observed: March 8-9, 2026

Problem
Antigravity can grow to around 11-12 GB memory usage.

This can happen even on the welcome screen with no workspace opened, so it does not appear to depend on a specific project workspace.

High-signal console errors

[Extension Host] Failed to update user status Error: LanguageServerClient must be initialized first!
POST https://127.0.0.1:49205/proxy/unleash/frontend 404 (Not Found)
Unleash: Fetching feature toggles did not have an ok response
POST https://127.0.0.1:49205/exa.language_server_pb.LanguageServerService/RefreshMcpServers 500 (Internal Server Error)
ERR [unknown] loading already in progress: ConnectError: [unknown] loading already in progress
[Extension Host] (Antigravity) [INFO]: Language server started
[Extension Host] (Antigravity) [INFO]: LS lspClient started successfully
Also observed

ERR [google.antigravity]: 功能表項目參考了 'commands' 區段中未定義的命令 `antigravity.importAntigravitySettings`
ERR [google.antigravity]: 功能表項目參考了 'commands' 區段中未定義的命令 `antigravity.importAntigravityExtensions`
ERR [google.antigravity]: 功能表項目參考了 'commands' 區段中未定義的命令 `antigravity.prioritized.chat.open`
What I tested
I did a conservative step-by-step isolation under:
~/Library/Application Support/Antigravity

I did not touch ch

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image380×150 22.5 KB

at-related storage such as:

Session Storage
Local Storage
WebStorage
User/workspaceStorage
User/globalStorage
I only tested safe cache folders one by one by:

quitting Antigravity
renaming one folder as backup
relaunching Antigravity
measuring memory again
Folders tested:

CachedData
Cache
GPUCache
DawnWebGPUCache
Result:
These cache folders were not the root cause. They had limited or inconsistent impact, but did not explain the large memory growth.

Important additional finding
Clearing DevTools Console reduced memory noticeably, which suggests console/log accumulation is amplifying the problem.

However, even after closing DevTools, some Antigravity plugin / renderer / language server processes still remained high, so DevTools is not the root cause either.

Likely issue
This looks like a combination of:

internal startup race conditions
repeated failing background requests involving LSP / Unleash / MCP refresh
console/log accumulation amplifying memory usage
occasional stale helper/LSP processes from previous runs
Request
Could you investigate:

initialization order of LanguageServerClient / Unleash / MCP refresh
retry/backoff behavior for failing background requests
cleanup of helper and language server processes on restart
undefined command references in the built-in Antigravity extension manifest
I can also provide screenshots of:

Activity Monitor showing Antigravity at about 11.26 GB
DevTools Console showing the errors above