DESIGN AN API COST STRATEGY FOR YOUR TOOL ========================================== Use this when you're building a Claude-powered tool for clients or customers and you need to figure out how to manage API costs without getting burned. --- Hey Claude — I'm building a tool powered by the Claude API and I need help designing a cost management strategy before I open it up to users. Here's what I'm building: [DESCRIBE YOUR TOOL IN 2-3 SENTENCES — WHAT IT DOES, WHO USES IT] Here's my pricing model: [HOW MUCH ARE YOU CHARGING? e.g., "$97/month" or "free for members" or "one-time purchase"] Please help me: 1. ESTIMATE MY COSTS Based on what you know about this type of tool: - How many tokens does a typical interaction use? - What would 10 active users cost me per month? - What would 100 active users cost? - At what usage level does this stop being profitable? 2. DESIGN A COST PROTECTION MODEL Give me 2-3 options for how to protect myself, with the pros and cons of each. For example: - Monthly threshold per user with API key handoff - Usage caps (X interactions per month) - Frequency limits (can only run X once every 30/60/90 days) 3. WRITE THE USER COMMUNICATION Draft the email or in-app message a user would receive when they hit the threshold. It should feel like good news, not a wall. Something like: "You're getting a lot of value from this — here's how to keep going on your own dime." 4. BUILD THE GATE (if possible) If this is something you can help me implement — a simple counter, a flag in Airtable, an email trigger via Resend — let's build it. Goal: I want to be generous with my users AND not go broke doing it.