All Articles
Retiring Prompt Assets That Refuse to Die — A Ledger for Paths Static Analysis Cannot See
A prompt I had supposedly consolidated away was still running daily. Here is the retirement ledger I built to cross-check static references, flag defaults, observation windows, model end-of-life dates, and cache effectiveness.
Don't Let the AI Studio Developer Log Be Your Source of Truth: A Two-Layer Way to Observe the Interactions API
The Interactions API developer log in AI Studio is a great triage lens, but it is not a system of record. Here is a two-layer observability design with self-hosted structured logging, reconciliation code, measured sink sizing across 100,000 records, and per-feature cost attribution from an indie operator’s point of view.
When to Hand Conversation State to the Server: previous_interaction_id vs. Pruning History Yourself
With the Interactions API, passing previous_interaction_id lets the server hold conversation state so you stop resending history. But a large tool output that lands mid-conversation can't be pruned afterward, and every later turn drags its weight. Here is a branching design that mixes server-side state with client-side pruning, plus a thin, working Python wrapper.
Run Managed Agents with background: true So Your UI Never Freezes — An Async Run Pattern for Solo Developers
A background run in Managed Agents returns a run ID, not a finished answer. Here is the minimal polling setup, where it pays off in solo development, and the credential-refresh details worth knowing.
Still image or short clip? Deciding feature placement from the cost gap between Nano Banana 2 Lite and Omni Flash
When I froze over whether a wallpaper app's hero asset should be a still image or a short moving loop, the deciding factor was not taste but the order of magnitude of the cost. Here is how to normalize Nano Banana 2 Lite and Omni Flash onto the same footing, down to a working decision function.
How Well Does Omni Flash Hear 'Rotate the Camera 30 Degrees Right'? Measuring Where Conversational Edits Land
Public-preview Gemini Omni Flash lets you re-edit a generated video in plain language. 'Make the lighting evening' lands; 'rotate the camera 30 degrees' often misses. Here is a running log of where instructions land, sorted mechanically by comparing before/after frames.
Keeping a Long-Running Managed Agent Alive Across Sandbox Recycling — Durable Checkpoints and Idempotent Resume
A Managed Agents sandbox can be recycled out from under you. Before 40 minutes of work resets to zero, we design a durable checkpoint that pushes progress outside the sandbox and an idempotent resume that never runs a side effect twice. With working SQLite code.
The Same gemini-flash-latest Pointed to Different Models in Different Regions
Alias resolution rolls out region by region. Send the same gemini-flash-latest to Tokyo and us-central1 and, for a few days, different models answer. Here is why that quietly invalidates your comparisons, and how a one-shot probe catches it.
A Gemini stream drops halfway — restart it, or have the model continue?
Most apps silently restart a dropped stream. Here is the arithmetic behind continuing from the partial output instead, and where to put the threshold.
I Asked Gemini to Grade My App Store Screenshots. Everything Scored 78–85.
Ask Gemini Vision to grade App Store screenshots out of 100 and good candidates and deliberately broken ones both land at 78–85. Here is how I measured the judge's discrimination power, dropped absolute scoring, and rebuilt it as debiased pairwise comparison.
Sample what you already accepted — an audit budget that catches silent quality drift
A confidence gate only ever looks at output the model hesitated on. Silent drift sinks into the batch that sailed through. Working from a fixed 30-minutes-a-day review budget, this walks through deriving detection time from the binomial, reallocating the same budget across risk strata, and catching slow decay with a cumulative monitor.
Before One Runaway Experiment Drains the Shared Budget: Using AI Studio Spend Caps as Isolation Walls
When you run several Gemini experiments under one billing account, a single runaway loop takes everything else down with it. Here is how I use AI Studio's per-project spend caps as isolation walls, plus a client-side soft ceiling and monthly reconciliation, with working code.