Know what a call cost, and stay inside a budget.
lobstack-receipts
Read the receipt Lobstack returns on every model call — cost_usd, savings_usd, baseline_reason — and report cost from it instead of estimating. Use when a response carries x_lobstack or an x-lobstack-* header, when asked what a call or a run cost, or when a cost renders as $0.00.
lobstack-model-tier
Choose the cheapest model tier that can actually do the task instead of defaulting to a flagship, and verify the choice before spending on it. Use when selecting a model for a feature or agent, when one model dominates a bill, or when asked to cut inference cost without losing quality.
lobstack-spend-budget
Hold an agent, job or run inside a hard dollar budget using the per-call cost the Gateway returns, and handle the 402 when an allowance runs out. Use when building an autonomous loop, when asked to cap spend on a task, or when a Gateway call returns 402 Payment Required.
cost-aware-system-prompts
Write or review a system prompt that does not quietly multiply the bill — bounded output, no re-sent bulk, tool schemas counted as the input tokens they are. Use when authoring or reviewing a system prompt, when cost per turn is climbing, or when adding tools to an agent.
