# Another Coal > Check whether your everyday money-saving habits are fair thrift or quietly pass the cost to someone else: fair thrift, a bit tight, pinches others, or not worth the pinch - decided by fixed rules and drawn as coals on a fire grate. One metered run explains every call, names one possible knock-on effect per habit and words a warmer swap. URL: https://another-coal.skillsafe.ai/ API tutorial: https://another-coal.skillsafe.ai/api.html ## What it does - Free, in the browser: up to eight habit rows (name, how it works, who feels the pinch, how much it pinches, whether those people agreed, what it saves). - Chill (0-5, how much of the cost lands on other people who did not agree): when people you live with, guests or friends, or people who work for you or serve you feel the pinch and have not agreed, it is the pinch (a little 1, noticeably 2, a lot 3) plus 1 if they were never asked or 2 if they objected; otherwise 0. - The call, first match wins: others feel it, not agreed, pinch noticeably or more is pinches others; others feel it, not agreed, pinch a little is a bit tight; pinch noticeably or more for pennies is not worth the pinch; everything else is fair thrift. - The first move: the habit that pinches others with the most chill, else the bit-tight one with the most chill, else the first one not worth the pinch (ties to the earlier one). - One metered task, `weigh-habits` (model gpt-terra): explains each call from the person's own answers, names one possible knock-on effect per habit and words a warmer swap for each habit that pinches. The page re-checks the reply against its own calls. ## Input (all strings) task ("weigh-habits"), habits (one numbered line per habit), facts (lines computed by the page). ## Output One JSON object: task, headline, habits[] ({name, verdict, why, ripple, swap}), closing. ## Notes Nothing changes until the person changes it. Swaps never suggest buying anything and never carry phone numbers, emails, addresses or anyone's personal details. A light self-check, not financial or professional advice. ## Sources Built on the SkillSafe skill @guia-matthieu/second-order-thinking (https://skillsafe.ai/skill/@guia-matthieu/second-order-thinking). The name nods to the clerk in a well-known Victorian Christmas story who has to ask his miserly employer for another coal for the fire.