KontragentPro
Business
Russian company data from state registers by INN or OGRN: profile, finances, timeline
No keyCORSHTTPS
Square
Easy way to take payments, manage refunds, and help customers checkout online
Checked 4 days ago: not responding
API key
OAuth flow
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Failing · 0/100
What our checks found
- Health score
- 0/100
- Reliability
- 0%
- Average latency
- 414ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Square. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Uses OAuth. Exchange your credentials for an access token first.
curl -s "https://developer.squareup.com/ENDPOINT" \
-H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
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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Square — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Square free to use?
Square is listed in our free catalogue, but it requires OAuth, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Does Square need an API key?
Square uses OAuth rather than a simple key, so you register an application and complete an authorisation flow before making calls. That is more setup than a key, and it is why OAuth APIs are harder to try quickly.
Can I call Square from browser JavaScript?
Not directly. Square did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Is Square still working?
Not at our last check on 2026-09-18. Square did not respond successfully, which is why it is marked as down here. This may be temporary; we re-check on a schedule and the badge above reflects the most recent run.
Is Square available over HTTPS?
Yes. Square serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.