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Call POST /v1/quotes/cost/preview with a quote total to get indicative monthly payments and widget URLs. See the API reference for the full request and response schema. Every successful response includes links.loanIndicationWidget with two ready-to-use URLs:
Both URLs have the amount query parameter set to the totalInclTax from the request — the exact total the customer is financing. They are ready to use as-is. Do not hardcode a fixed amount; always use the value returned by the API. When you render representative examples from data.representativeExamples (in custom UI or alongside a widget), display the mandatory text_warning from data.content prominently — for example “Let op! Geld lenen kost geld”.

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Screenshot

Use links.loanIndicationWidget.png directly in an <img> tag:
The image is rendered on-demand by Prets. You do not need to generate or host it yourself.

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Financing Snapshot

Drop a single <script> tag where you want the widget to appear. Set src to your Prets domain — no CDN setup needed. Use the amount from links.loanIndicationWidget.url.
The script injects an iframe that displays 3 financing cards for the given amount. The iframe resizes automatically to fit its content. Set data-amount to the totalInclTax from the quote.

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Financing Explorer

The Financing Explorer adds interactive controls so customers can adjust the loan amount, down payment, and loan duration before clicking through to onboarding.
Set data-amount to the totalInclTax from the quote.

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Keeping the amount in sync

The amount query parameter is what drives the monthly cost displayed in the widget. It must always match the total the customer is actually financing.
  • Use the amount from links.loanIndicationWidget.url or links.loanIndicationWidget.png directly — both are already correct.
  • If the quote total changes — for example, the customer adjusts line items — call POST /v1/quotes/cost/preview again and use the new links from the updated response.
  • Do not hardcode an amount. A fixed value will show costs that do not match the customer’s actual quote.