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Freelancer Invoice Total Calculator
x402
Freelancer Invoice Total Calculator is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).
Calculates a line-item subtotal, applies a user-supplied tax rate, and returns the final invoice total — optimized for freelancer billing workflows.
Price / call$0.01
Success—
StatusUnknown
How this service works
Freelancer Invoice total calculator: Calculate a line-item subtotal, user-supplied tax rate, and total. Tailored for freelancer workflows.
Output
Returns a computed breakdown including the line-item subtotal (sum of quantity × unit_price for each item), the calculated tax amount based on the supplied tax_rate_percent, and the final total (subtotal + tax). Enables freelancers to produce accurate client-facing invoice amounts without manual math.
Example use cases
Single client project invoice
“I finished a freelance project and need to bill my client — I have 3 hours of design work at $75 each and 1 rush delivery fee at $50. Can you calculate the subtotal and total with 8.5% tax?”
Monthly retainer invoice with no tax
“I'm invoicing my retainer client for this month: 10 hours at $120 per hour and 5 hours at $95 per hour. No tax applies — can you give me the subtotal and final total?”
Multi-service invoice with tax
“Help me total up my freelance invoice: I have 4 blog posts at $200 each, 2 social media packages at $350 each, and 1 strategy session at $150. Apply a 7% tax rate and tell me the full amount due.”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/invoice-total-freelancer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, structured computation of invoice totals specifically for freelance billing scenarios — particularly when you have multiple line items with varying quantities and prices and need tax applied at a flat rate. It is ideal for agents automating freelance invoicing workflows, generating client-ready totals, or verifying billing math without building custom logic.
Side effects
- Missing or empty items array — calculation cannot proceed without at least one line item
- Negative quantity or unit_price values — may produce incorrect or negative subtotals
- Tax rate outside reasonable bounds (e.g. >100%) — accepted but produces unintuitive results
- Malformed item objects missing quantity or unit_price fields — may result in NaN or zero values
- Non-numeric tax_rate_percent — likely causes a validation or computation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| items | array | |
| tax_rate_percent | number |
Tags
x402
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