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Use these test card numbers to simulate card funding sources and card-based deposits in the staging environment. They let you verify your add-card, deposit, and decline-handling logic without a real card.
Staging onlyThese numbers are accepted only on the staging endpoint (https://transactional-graph.staging.fluzapp.com/api/v1/graphql). They will be rejected in production. See Add Funding Sources for how to attach a card.
How to use these values: CVV — any 3 digits (any 4 for American Express). Expiration date — any date in the future. Name and billing address — any non-empty test values.

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Successful Transactions

The cards below simulate successful card transactions.

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Declined Transactions

The cards below simulate declined transactions. Each returns the listed error code so you can test how your integration surfaces failures. See Decline Codes for the full reference.

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Next steps

Test bank accounts

Simulate ACH and bank-account funding sources — the other half of testing deposits.

Decline codes

The full reference for every decline reason your integration should handle.
Want to learn more? Contact us at partnerships@fluz.app. Speak with our experts for more info or to request a demo.