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A comprehensive knowledge base for Google Antigravity — from beginner to advanced.
Four Reasons Your .antigravityignore Rules Are Not Taking Effect
Rules that quietly do nothing, and rules that swallow the whole repository. Here are four causes behind both, each checked one at a time against a gitignore-style matcher.
The Cleanup Step Removed the Working Directory, Not Its Contents — Making Unattended Destruction Fail Closed
An unattended cleanup step deleted the working directory itself instead of what was inside it. Here is why the mkdir -p that followed was not a safety net, and how a defensive-looking default value ended up selecting the destructive branch, with the actual verification output.
A Triage Order for WebP and Opus Attachments That Never Reach the Agent
Hub 2.9.1 added WebP attachments on August 20, and CLI 1.1.17 fixed Ogg-family audio being rejected by the model on the same day. Here is why rejection happens on the sending side rather than in the file, with the MIME results I actually measured.
Choosing a Remote Control Host Machine Comes Down to Daemon Lifetime and Revocation Paths
What to settle before you flip on Remote Control in Antigravity 2.0: how the headless daemon behaves per OS, why there are two separate sign-out paths, and how to inventory the read surface on a candidate host machine.
Adding MCP Servers Without Opening the Config File: The agy mcp Subcommand
Antigravity CLI 1.1.16, released on August 20, adds an mcp subcommand so you can register and toggle MCP servers without hand-editing JSON. Here is how to add stdio and HTTP servers, isolate a misbehaving one, and script your whole setup so it travels to a new machine.
Driving Antigravity CLI with stream-json Input: Where to Split the Conversation
The print mode now accepts --input-format stream-json, letting an external driver hold one session open and feed it jobs one at a time. I measured how much a single conversation carries across 24 jobs, found that a byte budget splits work in the wrong place, and worked out how to choose the split boundary instead.
The pipe in my wrapper was swallowing Antigravity CLI's exit code
CLI 1.1.14 surfaces language server failures as a non-zero exit. That improvement never reaches you if your automation wrapper drops the exit code first. I ran sixteen calling patterns on bash 5.1 and recorded which ones make the failure disappear, plus the fixes that bring it back.
Why I Check Description Overlap Before Turning On inheritCustomizations
CLI 1.1.14 collapsed markdown agent inheritance into a single inheritCustomizations switch. Here is what happened when I actually inventoried the 47 skills in my workspace and decided the switch on description overlap rather than on context size.
Find the one broken MCP entry before Antigravity starts, with 40 lines of Node
A single typo in your MCP settings can take every server down with it. Here is a small preflight script that catches the mistakes statically, the real output from a deliberately broken config, and the duplicate-key trap that JSON hides from you.
Count What Writes Outside Your Workspace Before You Upgrade to CLI 1.1.14
Antigravity CLI 1.1.14 makes paths outside the workspace read-only by default. If your source assets and delivery targets live outside the repository, it is worth knowing what breaks before you upgrade. Here is a script that inventories your write targets, and the two ways it quietly undercounts them.
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