Fidel API - Data Processing Addendum

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Enriched, real-time transaction records from partner merchants

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The turnkey solution to launch, manage, and scale world-class card-linked offers.

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API REFERENCE

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Data Processing Addendum

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PRODUCTS

Select Transactions API

Offers as a Service

API REFERENCE

Select Transactions API

Offers as a Service

DEVELOPERS

RESOURCES

Customer Stories

DOCS

© 2026. Enigmatic Smile Ltd trading as Fidel. Fidel API uses a proprietary tokenization system and does not store any card numbers. All API requests use TLSv1.2 with end-to-end encryption. Fidel API receives transaction authorization messages typically within seconds of a successful authorization event.