KontragentPro
Business
Russian company data from state registers by INN or OGRN: profile, finances, timeline
No keyCORSHTTPS
InvoiceIn
Parse and validate received e-invoices: XRechnung, ZUGFeRD, Peppol, FatturaPA, KSeF
Verified 4 days ago: 100% uptime
API key
Required
HTTPS
Supported
Browser calls
Yes, CORS enabled
Status
Live · 100/100
What our checks found
- Health score
- 100/100
- Reliability
- 100%
- Average latency
- 761ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for InvoiceIn. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Requires an API key. Check the docs for whether it goes in a header or a query parameter.
curl -s "https://invoicein.peculiar.systems/ENDPOINT" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Accept: application/json"Where this listing comes from
Aggregated from one public source (public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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InvoiceIn — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is InvoiceIn free to use?
InvoiceIn is listed in our free catalogue, but it requires an API key, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Does InvoiceIn need an API key?
Yes. InvoiceIn authenticates with an API key. Keep it server-side rather than in browser code, because anything in your frontend bundle is readable by anyone who opens developer tools.
Can I call InvoiceIn from browser JavaScript?
Yes. InvoiceIn returned CORS headers when we checked it, so a browser will let your page read the response. You can fetch it directly from client-side JavaScript with no proxy and no backend.
Is InvoiceIn still working?
Yes, as of 2026-09-18. Our automated check reached InvoiceIn and recorded a 100% reliability score with a median response time of 761 ms. We re-check on a schedule, and this page updates with the result.
Is InvoiceIn available over HTTPS?
Yes. InvoiceIn serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.