10 prompts every GC should have saved on their phone. A few of them: 1. Confused field photo + drawing reference → 4-line RFI, ready to send. 2. Paste a sub bid → what's missing vs the drawings + what's likely to come back as a CO. 3. Open a wall and find something → CO draft with scope, hours, materials, time impact. 7. Sub email "we changed banks" → 3 tells + exact callback steps before you update anything. All 10 work in free Claude / ChatGPT / Gemini. No subscription. No software. Save them tonight: bluecollarlabs.org/prompts #generalcontractor #construction #projectmanager #subcontractor #tradesai