Choose Your Level
Pick the difficulty that matches where you are. You can come back and try a harder level later.
Beginner
Legacy CRM to REST API Data Mapping
Map customer registration data from a legacy database schema to a new REST API JSON format.
2 hours 3 criteria
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Intermediate
Stripe Webhook Callback Specification
Write a webhook integration specification for a Stripe payment gateway callback in USD.
3 hours 3 criteria
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Advanced
Enterprise ERP to Courier API Integration Specification
Write a systems integration specification linking an ERP inventory system to a global courier API (DHL/FedEx).
5 hours 3 criteria
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