It Worked Interactively but Went Silent Overnight — Making an Antigravity Agent Behave the Same in the Desktop and the CLI
An agent that runs perfectly in the Antigravity desktop app but does nothing when you schedule it through the CLI. This walks through absorbing the gap between interactive and unattended runs across four points — approvals, context, secrets, and runtime — with working code and a preflight check, so one definition behaves identically on both.
Detecting and Fixing Drift Between a Guide Skill and Your Code
Pin a procedure into a built-in Guide skill and it gets left behind when the code later changes. Here is an operational design that machine-checks the things a Guide references, catches drift early, and keeps the Guide thin.
Systematize Pre-Release Checks for Sound-Playing Apps with Waveform Rendering and Agents
The 6/26 update let Antigravity render audio files. Drawing on years of shipping sound in healing apps, here is a design that folds loudness, clipping, length, and silence checks into an agent verification loop, with the actual scripts.
When Your MCP Servers Vanish From the Chat App in Antigravity 2.0
After Antigravity 2.0 split into an IDE and a separate chat-style agent app, an MCP server I had set up in the IDE stopped showing up on the chat side. Here is why the settings scopes are separate, and how to fix it by making a single workspace-level source of truth that both apps read.
Don't Let Your Automation Lean on AI Ultra's 5x Ceiling
The $100/month AI Ultra plan raises Antigravity's usage limits to 5x AI Pro. But if you architect automation around that ceiling, it collapses the moment you drop back a tier. Here is a limit-independent degradation design, with the real pain points.
Faster Substring Search Changes How You Should Let Agents Explore Code
The 6/26 update made substring search noticeably faster. Rather than treating it as a comfort improvement, here is how to redesign the way agents explore code, budget context, and verify their targets, with measurements from indie development.
Keeping Naming and Formatting Stable When Your Model Falls Back
When a model falls back mid-run, an agent's naming conventions and formatting drift quietly. Here is how I enforce a model-independent style contract plus a drift probe to keep output consistent.
When the Android CLI Got 3x Faster and Cut Tokens by ~70%, the Right Move Was More Verification Per Change — Not More Parallelism
Reading that the Android CLI agent runs ~3x faster while using ~70% fewer tokens, my first instinct was to ask how many runs to parallelize. But a faster agent doesn't change how much work ships — it changes where the queue forms. This walks through why, sizes the new bottleneck (review and verification gates) with Little's Law, enforces a WIP cap with a working Python admission controller, and reinvests the freed budget into depth per change — with measured results.
The Built-in Guide Skill Is Only Advice — Pair It With a Gate That Mechanically Rejects Antigravity's Output
The v2.2.1 built-in Guide skill raises how often the agent complies, but it is still probabilistic advice. Here is the design for a deterministic gate that reliably stops the violations that slip through, with working code and measured results.
When Every Antigravity-Written Test Is Green but the Same Bug Comes Back — Field Notes on Measuring Hollow Assertions
Your AI-written tests all pass, coverage is high, yet the same defect returns to production. The cause is over-mocking and tautological assertions. These are field notes on using mutation testing as ground truth to measure what your tests actually protect, and to fix it operationally.
When the Agent Hands You 1,400 Replacements in One Commit, Ask for Batches Instead
Ask Antigravity to run a large codemod and you can get back one unreviewable commit. Here is a small design — ast-grep rules plus a verified batch driver — that splits a mechanical replacement into the machine's job and the human's check, with working code.
The App Open Ad Antigravity Wrote for Me Fires Every Time I Return From My Own Paywall or Rewarded Video
Ask Antigravity to add an App Open ad and it shows one the instant you return from your own rewarded video or the Google Play purchase sheet — which also brushes against AdMob policy. Here is a foreground arbiter that records why the app came back, with working Kotlin and a verification matrix.