Letting a Background Agent Work Overnight Without Regretting It by Morning — Guardrails for Unattended Runs
When you hand overnight refactoring to Antigravity's Background Agent, the morning brings as much anxiety as convenience. From three angles — blast radius, completion criteria, and detecting silent regressions — here are the guardrails that let me run unattended jobs with confidence.
Piping Antigravity CLI's JSON Lines Output Into My Own Script — Notes on Partial Lines and Exit Codes
Feeding Antigravity CLI's machine-readable JSON Lines output into my own script broke with JSONDecodeError roughly one run in three. Here are the three traps — partial lines, exit codes, and stderr bleed — and the line-buffered consumer that finally made it stable.
Keeping Scheduled Runs Reproducible: Pinning the Antigravity CLI Version to Tame Behavior Drift
The Go-based Antigravity CLI is now available to everyone, and updates are landing at a quick pace. When a CLI baked into your automation upgrades underneath you, a single morning's job can behave differently. Here is how I keep things reproducible — pinning the binary, recording its identity in each run's log, and rolling upgrades forward one job at a time — drawn from running four sites on an overnight schedule.
How to Orchestrate Multiple Agents: Drawing the Line Between Parallel and Serial Work
Antigravity 2.0 brings true parallel execution across multiple agents. But making everything parallel does not make it faster. Which work should fan out in parallel, and which should stay serial? This is an orchestration design that does not fall apart, viewed through dependencies and contention.
From Gemini CLI to Antigravity CLI: Migrating Without Stopping Your Automation
Gemini CLI has been retired and the Go-rewritten Antigravity CLI is now its successor. If you have the CLI wired into CI or scheduled jobs, swapping everything at once will break your automation. Here is a concrete plan for migrating gradually, from parallel testing to full cutover.
Migrating to Antigravity 2.0 Without Stopping Your Automation: Parallel-Run and Rollback Design
How to move to Antigravity 2.0 without breaking running automation: how to set up a parallel-run window, verify output parity, pin versions, and keep a one-command rollback path, based on migrating four sites one at a time.
Running Antigravity CLI Unattended: Notify Only on Real Failures
A small wrapper for scheduled Antigravity CLI runs that stays silent on success and alerts you only on failures a human needs to act on, covering exit codes, transient-error triage, and duplicate suppression.
On Cutover Day to the Antigravity CLI, Verify Production Automation by Side-Effect Equivalence, Not Output
On the day you switch from the Gemini CLI to the Antigravity CLI, verify production automation by the equivalence of side effects — files written, commits, network calls — instead of matching stdout. A sandbox parallel run and a go/no-go cutover gate, with implementation steps.
Three Boundaries I Draw Before Handing Work to an Antigravity 2.0 Agent
What to hand a background agent, and what to keep in your own hands. The three boundaries I actually drew while running solo-dev automation in parallel, and how to encode them so the lines hold.
When the Antigravity CLI Stalls on a 401 During Unattended Runs
If your scheduled Antigravity CLI job suddenly stops producing output after a single 401 in the logs, here is how to separate an expired token from a silent re-login prompt and rebuild your unattended setup.
Ask Antigravity CLI Once Whether It Actually Answers, Right Before a Scheduled Run
When Gemini CLI shuts down on June 18 and you move to Antigravity CLI, an expired token or a bad first day can let an unattended job fail silently. Here is a preflight that probes the CLI once, classifies the failure, and decides whether the real job should start at all.
Measuring the Go-Based Antigravity CLI's Responsiveness to Rethink My Nightly Batch
The Antigravity CLI was reimplemented in Go, and startup and first-response feel different now. I measure startup, time-to-first-token, and throughput as three separate intervals, then use those numbers to move my nightly batch from serial to parallel.