---
title: "Invoice Validate (x402)"
method: POST
path: "/x402/v2/invoice-validate"
tags: ["x402"]
---

# Invoice Validate (x402)

`POST /x402/v2/invoice-validate`

## Request

- Base URL: `https://api.strale.io`
- URL: `https://api.strale.io/x402/v2/invoice-validate`
- Auth: none required

Validate invoice data: VAT number format, line item math, tax calculations, EU compliance requirements.

## Request body

- object
  - `invoice` object, required: Invoice JSON with vendor_vat, buyer_vat, amounts, line_items

## Response `200`

Success

- object
  - `valid` boolean
  - `errors` unknown[]
    - unknown
  - `warnings` unknown[]
    - unknown
  - `eu_compliant` boolean

## Other responses

- `402`: Payment required (x402 — pay with USDC on Base)

---

[API](https://skmtc.dev/strale/apis/strale-api-2.md) · [All operations](https://skmtc.dev/strale/apis/strale-api-2/llms.txt) · [OpenAPI document](https://skmtc.dev/strale/apis/strale-api-2/revisions/a5293878cfc6?raw)