Documentation
Guides
Everything you need to go from sandbox key to first signed request: quickstarts, authentication, and walkthroughs for each Checker API.
docs.checker.finance
Getting started
Create your sandbox key, make your first request, and learn the core concepts.
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In this portal
Authenticating with HMAC
Sign every request with your API key and secret using HMAC-SHA256.
docs.checker.finance
API reference
Every endpoint, parameter, and schema for the Trading and Payments APIs.
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