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Invoket Invoice PDF Generator
x402
Invoket Invoice PDF Generator is a paid API for AI agents from api.invoket.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Generates a standards-compliant PDF invoice from structured billing data following the EN 16931 European invoicing standard
Price / call$0.1
Success—
StatusUnknown
How this service works
Generate a complete Factur-X hybrid invoice: post simple business JSON (parties, lines, VAT) and get a PDF/A-3B document with the EN 16931 CII XML embedded (plus XMP) - the human-readable PDF that IS the structured e-invoice mandated by the French 2026-2027 reform. Already passed the full official rule set, and its embedded XML re-read byte-for-byte by our own reader; totals computed for you, inconsistent inputs rejected with actionable field-level errors. No account, no key.
Output
A binary PDF document representing the complete invoice, with all line totals computed per EN 16931 rounding rules, document-level totals, and VAT breakdown. The response body is the PDF file. Any inconsistency between supplied totals and computed totals, invalid dates, unsupported currencies, or malformed fields results in a 400 error with a descriptive error code.
Example use cases
Freelancer monthly client invoice
“Create a PDF invoice numbered FL-2025-07 issued today July 1 2025, due July 31 2025, from my company SoftDev Studio to ClientCorp Ltd, in GBP, for 8 hours of software development at 120 per hour and 1 design review at 200 — I need the VAT breakdown included.”
E-commerce automated order invoice
“Generate a PDF commercial invoice number ORD-98234 issued 2025-07-01, due 2025-07-15, seller is ShopEasy BV, buyer is the customer John Müller, currency EUR, with 3 line items: 2x Widget A at 29.99, 1x Widget B at 49.99, and 5x Widget C at 9.99.”
Credit note for returned goods
“Issue a credit note PDF, invoice number CN-2025-003, type code 381, issued 2025-06-30, no due date, from SupplierCo to RetailerInc in USD, for -5 units of returned Product X at 80 each.”
Technical details
Endpoint
POSThttps://api.invoket.com/invoice/generate-pdfWhen to prefer
Choose this endpoint when you need a fully computed, standards-compliant EN 16931 PDF invoice with automatic VAT breakdown and line-total computation from raw billing data. Ideal for AI agents automating invoicing workflows where correctness guarantees and rejection of inconsistent data matter. Prefer over generic PDF generators when European e-invoicing compliance, provenance, or strict field validation is required.
Side effects
- 400 inconsistent_totals — supplied totals object diverges from computed line totals
- 400 invalid_date — issue_date or due_date matches YYYY-MM-DD pattern but is not a real calendar date
- 400 implausible_currency — currency code is XXX, XTS, or an unsupported unit of account
- 400 INVALID_INVOICE_INPUT — unknown or misspelled fields in the request body
- 400 implausible_identifier — electronic_address value is malformed or repeats its EAS scheme code
- 413 beyond — request body exceeds 10 MB limit
- Missing required fields (buyer, seller, lines, currency, etc.) result in 400 validation errors
- Empty lines array is rejected as lines must be non-empty
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| buyerrequired | object | |
| linesrequired | array | Invoice lines (BG-25), required non-empty. Line ids (BT-126) are numbered for you; each line net (BT-131) is computed as qty x unit_price with the official EN 16931 rounding. Document totals (BG-22) and the VAT breakdown (BG-23) are computed from the lines; an optional top-level `totals` object is VERIFIED against that computation and rejected with code inconsistent_totals if it diverges - never silently repaired |
| sellerrequired | object | |
| paymentrequired | object | |
| currencyrequired | string | Invoice currency (BT-5), ISO 4217, required. It must be usable for billing: XXX (no currency) and XTS (test) are a 400 implausible_currency although BR-CL accepts them - a restriction no BR rule states; metals and units of account (XAU, XAG, XPD, XPT, XDR, XUA) are accepted |
| due_daterequired | string | |
| issue_daterequired | string | Issue date (BT-2), required, YYYY-MM-DD AND a real calendar date - 2026-13-99 fits the pattern but is a 400 invalid_date. Optional due_date (BT-9, same check) and type_code (BT-3, default 380 commercial invoice, 381 credit note) |
| invoice_numberrequired | string | Invoice number (BT-1), required. The whole input is the simple business JSON shown here (identical to /invoice/generate) - unknown or misspelled fields are refused (400 INVALID_INVOICE_INPUT), a typo is never silently ignored. Max body 10 MB (413 beyond). A supplied electronic_address {value, scheme} is form-checked here too: a value repeating its own EAS code, or malformed for the declared scheme, is a 400 implausible_identifier |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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