{"id":"dat-free-chatbot-invoice-check","audience":"freelancers","category":"data","technique":"verification","title":"Catch a chatbot's mistake on your invoice total","free":false,"task":"A chatbot drafted your invoice and got $925.75. Your contract says the 15% rush fee applies only to the rush edits line, and the stock photo is passed through at cost. Write exactly 3 numbered lines, one per line item, each with its math, then one unnumbered last line: Total: $X (chatbot's $925.75 was right or wrong). Plain text, under 60 words.","materialLabel":"Your work log and the chatbot's draft (attached to your prompt automatically)","material":"INVOICE PREP - Saltmarsh Outfitters (rate $80/hr)\n\nWork:\n- Website product copy: 6.5 hours\n- Rush edits for the holiday landing page (24-hour turnaround): 3 hours\n- Stock photo license (bought for them): $45\n\nCHATBOT DRAFT (pasted)\n\"Subtotal: 6.5 x $80 + 3 x $80 + $45 = $805\nRush fee 15%: $120.75\nTotal due: $925.75\"\n\nNotes:\n- Client contact: Dee in marketing; she approves invoices on Fridays.\n- Net 15 terms.\n- I already sent them the photo license receipt.\n- Next month: maybe a catalog project, not confirmed.\n- Only the holiday landing page edits were done on a 24-hour turnaround.\n- Product copy was delivered on the normal schedule.\n- I invoice on the last business day of each month.\n- Dee asked for the invoice to list each task on its own line.","rules":[{"type":"numberedItems","count":3},{"type":"plainText"},{"type":"maxWords","max":60}],"mistakes":[{"title":"Not giving the contract rule","why":"The AI accepts a rush fee on the whole invoice.","fix":"Add: \"The 15% rush fee applies only to the rush edits line.\"","checks":["r1","r2"]},{"title":"Not asking to see the work","why":"If you just ask 'is this right?', the AI may agree with the chatbot.","fix":"Add a line to copy: \"2. Rush edits: 3 x $80 = $240 + 15% = $276\"","checks":["numberedItems","r1"]},{"title":"Marking up pass-through costs","why":"The AI adds fees to the photo you bought at cost.","fix":"Add: \"The stock photo is at cost, no fees.\"","checks":["r0"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting. Ask for a total word limit and it often lands over it.","fix":"Cap each line: \"each line under 12 words.\"","checks":["maxWords"]},{"title":"Forgetting where it goes","why":"AI loves markdown tables and bold, which show up as clutter in an invoice tool.","fix":"Add: \"Plain text, no bold, headings or tables.\"","checks":["plainText"]}],"promptHints":[{"label":"Gives the rush rule","patterns":["rush.{0,30}only","15\\s*%"]},{"label":"Keeps the photo at cost","patterns":["at cost","pass.?through","photo"]},{"label":"Asks to show the math","patterns":["show (the |your )?(math|work)","x \\$|\\bx\\b.{0,10}=","calculation","step"]},{"label":"Asks for a verdict","patterns":["right or wrong","chatbot"]},{"label":"Asks for plain text","patterns":["plain","no bold","no markdown","no formatting","no (headings|tables)"]}],"hint":"The chatbot didn't know your contract. Give the AI the rush fee rule and ask it to redo each line.","rubricLabels":["Product copy is 6.5 x $80 = $520 and the stock photo is $45 with no fee added","Rush edits are 3 x $80 = $240 + 15% ($36) = $276","The last line gives Total: $841 and says the chatbot's $925.75 was wrong, with nothing before the first numbered line"]}