The Date Column Was the Most Expensive Part of My Sales CSV — Measuring What Attachments Really Cost
2.4.3 lets you attach .json, .md, and .csv files directly. I rendered the same table eight ways, priced every column in tokens, and boiled it down to a 1,062-token digest. Every number here came from a run on my own machine.
Capping Parallel Agents With a Token Budget — Designing a Guard That Stops Runaway Cost
Running many agents in parallel quietly inflates your token bill. This is not about shrinking prompts — it is about a governance layer that meters spend in real time and cuts it off at a budget. Full design and TypeScript implementation, drawn from running six sites autonomously.
Cutting Antigravity Agent Costs in Half Without Sacrificing Quality — A Practical Optimization Playbook
Running Antigravity agents full-time can drive your API bill up fast in the first month. Across four sub-agents in my own production setup, I cut monthly token consumption almost in half while keeping quality identical. Here is the before/after breakdown, the model-routing break-even, and the mistakes I made along the way.