All Articles
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.
When a Subagent Never Finishes, Look at the Parent's Unapproved Artifacts First
A subagent that runs all night and never returns is usually not the one that is stuck. Here is how I separate a blocked parent from a blocked child using a short log-scanning script, where the new always proceeds mode helps, and where I stop letting approvals happen automatically.
Android 17 Went Canary-Only, So I Gave My Agent the Silence Rules First
Android 17 dropped Developer Previews in favour of rolling Canary builds, which moved the verification deadline onto my side of the table. Here is how I handed the tracking job to an Antigravity agent by designing when it stays quiet, not when it reports.
I Asked the Agent to Pick Tests From My Diff and It Said "None" Nine Times Out of Ten
Change-based test selection returned zero tests for most edits. Measuring how far an import graph actually reaches across three repositories, and rebuilding the selection contract around it.
Reading the Same History in 38 Seconds — or 0.4: Handing a Read-Only .git to Your Agent
Antigravity CLI 1.1.10 lets the sandbox read .git without write access. I built a per-session history summary two ways, measured a roughly 100x speed gap, traced it to process spawn cost, and added a guard for shallow clones that silently corrupt the numbers.
A Typo in agent.md Quietly Widened My Permissions — Writing a Strict Frontmatter Lint
Misspelled keys in agent.md frontmatter do not raise errors. They fall back to defaults, and for permission fields that fallback points the wrong way. Here is the failure I hit, the lint I wrote to catch it, and what the measurements showed.
The night my agent shipped nothing: giving generation agents an abstain outcome
When you score a background generation agent by how much it produces, the quality gate quietly loosens over time. Here is a three-valued ACCEPT / ABSTAIN / REJECT design that counts a zero-artifact run as a success, with the code and the measurements from running it.
Leasing Runtime Environments to Parallel Agents: Port Ranges, DB Schemas, and Dev Servers, One Per Agent
When Antigravity 2.0 runs agents truly in parallel, they collide on the same port, database, and dev server. Here is a lease-based design that hands each agent its own isolated environment, with implementation and measured numbers.
The Morning It Wrote Outside the Working Folder: Vetting Every Write Path in One Function
Antigravity CLI 1.1.3 closed a bug where always-proceed mode silently auto-approved writes outside the workspace. Here is a small guard that vets every write path with nothing but path canonicalization and a containment check, plus an escape-attempt test suite.
Treating Code Search as a Contract: Measuring the /codesearch Regex Default
Antigravity CLI 1.1.3 interprets /codesearch queries as regular expressions by default. I measured the gap between regex and literal matching across a 979-article repository and turned the results into three query rules and a drift harness.
Three Quarters of My Reference Notes Never Reached the Agent: Measuring What head Cuts Away
I fed reference notes to a scheduled agent with cat and head, and the lines that mattered were quietly cut. Here is the measurement, and how I replaced a line count with a section-level contract.
The More I Wrote in AGENTS.md, the Less Got Followed — Measuring Adherence and Cutting Rules
The rules in my AGENTS.md were being ignored — not from precedence conflicts or load failures, just plain ignored. Here is how I turned rules into checkable predicates, measured adherence over three weeks, and cut the file in half.