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Cats

Pictures of cats from Tumblr

Open documentation ↗
API keyHTTPSCORSAnimals

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
316ms

Last checked 2026-09-18. Measured independently, not self-reported by the provider.

How to call it

A starting template for Cats. 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://docs.thecatapi.com/ENDPOINT" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json"

Where this listing comes from

Aggregated from 2 public sources (public-api-lists, public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.

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Cats — common questions

Answered from what our own scheduled checks found, not from the provider's marketing.

Is Cats free to use?

Cats 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 Cats need an API key?

Yes. Cats 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 Cats from browser JavaScript?

Yes. Cats 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 Cats still working?

Yes, as of 2026-09-18. Our automated check reached Cats and recorded a 100% reliability score with a median response time of 316 ms. We re-check on a schedule, and this page updates with the result.

Is Cats available over HTTPS?

Yes. Cats serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.