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Warrant

APIs for authorization and access control

Open documentation ↗

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
704ms

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

How to call it

A starting template for Warrant. 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://warrant.dev/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.

Other Authentication & Authorization APIs

See all 7

Auth0

Authentication & Authorization

Easy to implement, adaptable authentication and authorization platform

API keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

MojoAuth

Authentication & Authorization

Secure and modern passwordless authentication platform

API keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

GetOTP

Authentication & Authorization

Implement OTP flow quickly

API keyHTTPS

Verified 4 days ago: 100% uptime

View Details

SAWO Labs

Authentication & Authorization

Simplify login and improve user experience by integrating passwordless authentication in your app

API keyHTTPS

Verified 4 days ago: 100% uptime

View Details

Stytch

Authentication & Authorization

User infrastructure for modern applications

API keyHTTPS

Verified 4 days ago: 100% uptime

View Details

Micro User Service

Authentication & Authorization

User management and authentication

API keyCORSHTTPS

Checked 4 days ago: not responding

View Details

Warrant — common questions

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

Is Warrant free to use?

Warrant 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 Warrant need an API key?

Yes. Warrant 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 Warrant from browser JavaScript?

Yes. Warrant 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 Warrant still working?

Yes, as of 2026-09-18. Our automated check reached Warrant and recorded a 100% reliability score with a median response time of 704 ms. We re-check on a schedule, and this page updates with the result.

Is Warrant available over HTTPS?

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