discernment-nudge

what it does

After you give a substantive answer or draft that the user may act on — advice or recommendations, drafted artifacts such as goals, plans, pitches, proposals, or emails, estimates or projections, analysis or interpretation of data, factual claims they may rely on, or a multi-step argument — invoke this skill BEFORE finalizing your reply and then, if it applies, append 2-3 short follow-up questions, each tied to something specific in what you just produced, that help the user check key facts, probe the reasoning or assumptions, and notice missing context. Do this at most once per conversation. Skip it when the user asked a trivial how-to or simple lookup, wants a purely educational explanation, asked you only to format, convert, or assemble a file from content they provided, is writing code they will run, is doing creative writing or casual chat, or already asked you to double-check, cite, or review — the skill file explains these boundaries and the exact output format.

by Anthropic, PBC · Anthropic, PBC, Apache-2.0 · version 1 · license Apache-2.0

Verified Before and after: 2 models 1 try per case View source Download .zip

Compare the answers

Answers from Claude Sonnet 5.5 and GPT-6.1 Sol · try 1 of 1

Same request, same model, once with the skill and once without. Read both and judge for yourself.

“I'm thinking about running a coffee cart at my town's Saturday farmers market. Roughly what would it cost to get started, and how long until I break even?”

with the skill

Costs vary a lot with your setup, location, and local health rules, so here are ballpark US figures. **Startup costs (one-time)** | Item | Lean (batch brew/pour-over) | Espresso setup | |---|---|---| | Tent, table, signage | $400-$800 | $400-$800 | | Brewing equipment | $300-$1,000 | $2,500-$7,000 (machine + grinder) | | Power/water (inverter generator, water tanks, handwash station) | $500-$1,500 | $700-$2,000 | | Coolers/small fridge, small tools | $200-$500 | $300-$1,000 | | Permits, license, insurance, food handler card | $400-$1,500 | $400-$1,500 | | Opening inventory (beans, milk, cups, syrups) | $300-$600 | $500-$1,000 | | **Total** | **~$2,000-$6,000** | **~$5,000-$13,000** | A purpose-built cart or trailer would add roughly $5,000-$30,000+. **Ongoing costs** - Market booth fees: about $25-$50 per Saturday, or a seasonal fee of a few hundred dollars - Ingredients and cups: roughly 25-30% of sales - Card processing: about 2.6-3% plus a small per-transaction fee

Show the rest (18 more lines)

- Fuel, ice, and any helper's wages **Break-even estimate** Assume you sell 60-120 drinks per Saturday at around $4.50-$5.50 each. That's roughly $300-$600 in sales. After ingredients, fees, and booth costs, you'd keep about $150-$350 per market. On a 20-30 week season, that's about $3,000-$10,000 a year before paying yourself. - **Lean setup (~$4,000):** about one season, maybe 15-25 markets - **Espresso setup (~$9,000):** about 1.5-2.5 seasons - **Full cart or trailer:** 2-4 seasons, or longer if you only work this one market Weather, seasonality, and your first-year ramp-up could easily shift these numbers. Many new vendors sell below average for the first few weeks while they build a following. A few things worth a second look: - How would break-even change if my market only has 40-60 customers buying coffee per Saturday? - Where can I check my county's health permit and commissary requirements for a mobile coffee vendor? - How much do the 60-120 drinks per Saturday and the $150-$350 profit rest on assumptions I should test?

without

# Rough Startup Costs (US) **Lean setup** (drip/pour-over, maybe a simple espresso machine, canopy and tables): **$3,000-$6,000** **Mid-range** (a proper 2-group espresso setup, generator, nicer branding): **$6,000-$12,000** **Full build** (custom cart or trailer): **$15,000-$30,000+** **Typical line items:** | Item | Cost | |---|---| | Espresso machine (used to new) | $1,500-$6,000 | | Grinder(s) | $400-$1,500 | | Quiet inverter generator or power station | $500-$1,200 | | Canopy, tables, signage | $400-$1,000 | | Water/handwashing setup | $100-$400 | | Coolers/fridge, smallwares | $400-$1,000 | | Cups, lids, initial inventory | $500-$1,000 | | Permits, business license, food handler card | $100-$1,000 | | Liability insurance (annual) | $300-$700 |

Show the rest (34 more lines)

| POS (Square, etc.) | $0-$100 | Market booth fees are usually $25-$50 per Saturday, or $400-$800 for a season. # Break-Even Estimate Assumptions: ~$5 average ticket, ~25% cost of goods, ~3% card fees, and a $40 booth fee. | Scenario | Drinks/Saturday | Profit/Saturday* | |---|---|---| | Slow | 40 | ~$100 | | Typical | 80 | ~$250 | | Strong | 120 | ~$400 | *After ingredients, fees, and booth cost, before paying yourself or staff. **Break-even timeline:** - **Lean ($5K) at ~$250/week:** ~20 Saturdays, so within one season - **Mid-range ($10K):** ~40 Saturdays, so 1-1.5 seasons - **Slow market ($100/week):** 50+ weeks, so 2 seasons or more # What Moves the Numbers Most - **Foot traffic and competition.** Is there already a coffee vendor? - **Season length.** Year-round vs. 20 weeks is a big difference. - **Hiring help.** Espresso rushes often need two people, which cuts profit significantly. - **Menu.** Iced drinks and specialty lattes carry high margins. Plain drip is cheap but low-ticket. - **Used vs. new gear.** This is the easiest place to save thousands. # Before You Commit 1. Ask the market manager about vendor fees, waitlists, and whether another coffee vendor exists. 2. Call your county health department. Some require a commissary kitchen or specific water/handwashing setups, which can add real cost. 3. Test the concept first by renting gear or doing a few markets with a lean setup. If you tell me your location, how long the market season runs, and whether you're leaning toward espresso or just drip, I can tighten these numbers.

Answers are shown exactly as the model wrote them, from the first try, and nothing is picked by hand.

The models

2 models

Claude Sonnet 5.5

made by Anthropic

claude-sonnet-5-5 · revision not reported by the provider

1 try per case · tested 3 Nov 2026

GPT-6.1 Sol

made by OpenAI

gpt-6.1-sol · revision not reported by the provider

1 try per case · tested 3 Nov 2026

The tasks

written by Carte Blanche

action-items-from-notes

“Pull the action items out of these notes.”

check-my-churn-math

“Can you check my math? We started Q1 with 400 customers, lost 40 during the quarter and signed 100 new ones. I calculated Q1 churn as 40 / 500 = 8%.”

coffee-cart-estimate

“I'm thinking about running a coffee cart at my town's Saturday farmers market. Roughly what would it cost to get started, and how long until I break even?”

quick-answer-requested

“Quick answer only, I'll do my own research after: is it safe for a healthy adult to take creatine every day?”

support-team-okrs

“Draft three quarterly OKRs for my 6-person customer support team. We want faster responses and happier customers.”

Install

Download the .zip and unzip it. Put its files, in a folder named discernment-nudge, here:

Claude Code~/.claude/skills/Every project. For one project only, use .claude/skills/ inside it.

Codex~/.agents/skills/Every project. For one repository only, use .agents/skills/ inside it.

Cursor~/.cursor/skills/Cursor also reads the Claude Code and Codex folders above.

Then start a new session and ask for what the skill does. Other agents that read SKILL.md have their own skills folder; check their docs.

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