From file to useful result
How to ask with this skill installed
Installing the skill gives your AI a method. Your request still has to provide the case-specific facts, constraints and expected output.
1Name the real task
Describe the decision or deliverable, not just the topic.
2Provide the evidence
Add source material, audience, limits and known facts.
3Define done
Set format, quality criteria and checks.
Adaptable starting prompt
Replace the brackets with your case
When to use it
A freelance writer needs to invoice a client for completed, in-progress, or milestone-based work — and wants the invoice to look professional, be legally compliant for Spain, and include all necessary details to ensure fast payment.
Common triggers:
- Project completed — send final invoice
- Milestone reached — invoice for the completed phase
- Retainer month ended — invoice the monthly flat fee
- Deposit required before starting — invoice for upfront payment
- Client requested a batch invoice for multiple pieces delivered
- Received a late payment — send a follow-up reminder invoice
What this skill does NOT do:
- This is not accounting software — it generates invoice documents, not tracking ledgers
- This is not payment processing — use Stripe, PayPal, or bank transfer for actual payments
- This is not tax advice — consult an accountant for your specific tax situation
- This is not a receipt — it's a formal invoice for business transactions
Mistakes to avoid
- Wrong VAT number on client details — Always verify before invoicing
- Forgetting IVA — Always add 21% unless exempt
- No invoice number — Invalid for tax purposes
- Invoicing in wrong currency for international clients — EUR for Spain, USD for US, GBP for UK
- Not keeping copies — Archive every invoice sent
- Invoicing before deposit cleared — Wait for deposit payment confirmation
- Late invoicing — Invoice the same day or within 24 hours of delivery