Running Gemini's Managed Agents API: Where Cloud Execution Ends and My Local Agents Begin
A hands-on record of launching Gemini's Managed Agents (public preview) from Python — polling, artifact retrieval, and a cost guard — plus five criteria I use to decide what stays on my local CLI agents.
Replacing a Decade-Old SKPaymentQueue with StoreKit 2 — Migrating 4 Wallpaper Apps with an Antigravity Agent
A field report on migrating SKPaymentQueue-based purchase code to StoreKit 2's Transaction.currentEntitlements across four wallpaper apps — what I delegated to an Antigravity agent, and the traps I only found on real devices.
Size Antigravity Agent Tasks by What You Can Review — a Practical Cure for Rework
A one-line request cost me forty minutes of agent time and a Monday rewrite. Here is the sizing rule I switched to — tasks I can review in fifteen minutes — with the three actual briefs, acceptance criteria phrasing, and file-boundary rules for worktree parallelism.
Rebuilding Wallpaper Image Delivery Around Resolution Buckets — Letting an Antigravity Agent Own Conversion and Validation
Every new device resolution quietly makes a wallpaper app heavier. I stopped shipping one master image to every device and rebuilt delivery around resolution buckets, WebP/AVIF, and an edge redirect — then handed conversion and validation to an Antigravity agent. Real code and thresholds included.
Choosing the Right Granularity for an Agent's Tools — Bundle or Split?
Should you split an agent's tools finely or bundle them coarsely? A single decision rule, an intentionally asymmetric two-tier design for destructive actions, and real numbers from running six apps.
Why Antigravity Agent Edits Fail With 'patch does not apply' and How to Fix It
Why Antigravity agent edits stall with 'patch does not apply' or 'hunk failed', and how to fix it. Focused on the race where the file changes after the agent reads it, with the settings that stop it from recurring.
Two Months of Maintaining Four Wallpaper Apps with Antigravity and git worktree
A record of two months running Antigravity's agent alongside git worktree to maintain four wallpaper apps in parallel. How the branch-switching tax disappeared and the agent's work stopped bleeding together.
Delegate the Undoable, Guard the Irreversible — Tiering Agent Autonomy by Reversibility
When you hand production work to an Antigravity agent, the thing that bites first isn't intelligence — it's whether the operation can be undone. Here is a design that sorts every operation into three reversibility tiers and routes each to auto-execution, checkpointed execution, or a human gate, with TypeScript implementations and real numbers from running six apps in parallel.
Keeping Secrets Out of Your Antigravity Agent's Output: Layered Defenses for Logs, Diffs, and PR Bodies
The three paths through which background agents leak secrets, and how to defend commit diffs, execution logs, and PR bodies with layered protection, drawn from running six apps and measured false-positive rates.
Fixing self-signed certificate in chain When Antigravity Can't Connect
On networks with a corporate proxy or antivirus TLS inspection, Antigravity may log self-signed certificate in chain or unable to verify the first certificate and fail to reach the model. Here is what causes it and how to fix it.
Teaching Antigravity's Agent to Keep Diffs Small: How a Month Changed the Way I Review
When an agent hands you one giant diff, a solo developer's review can't keep up. After a month of asking Antigravity to break work into small steps first, here's how the experience of reviewing changed — with the exact instructions I now use.
Rehearsing an Agent's Actions Before They Touch Production — Designing a Zero-Side-Effect Dry-Run Layer
Some accidents survive shadow mode and canaries: the very first time an agent touches an external API. This is the design and TypeScript implementation of a zero-side-effect dry-run layer you can bolt onto Antigravity's parallel agents, with the real numbers from running six sites autonomously.