Fintech API and Integration Security Questionnaire

An editable 18-page field guide for the analyst reviewing a platform that connects to a fintech API for bank data or payment initiation. Every item explains why it matters, the result a good answer should produce, the evidence to request, and the next analyst move.

What’s inside

• A readiness page confirming the vendor entity, product, environment, region and service in scope, business criticality and data sensitivity, the internal owners who can validate each claim, and how restricted evidence will be handled
• Thirty-two numbered items, FAPI-01 to FAPI-32, grouped into 8 control domains
• Service Scope and Financial Risk; API Inventory Design and Lifecycle; Identity Authentication and Authorization; and Secrets Cryptography and Client Security
• Consent Transaction and Fraud Controls; Webhooks Data and External Integrations; Secure Development Testing and Vulnerabilities; and Monitoring Incidents Resilience and Exit
• Response, evidence reference, action owner and due date against every item, so the completed form is the assessment record rather than a questionnaire you transcribe later
• A rapid final checklist that restates all 32 questions on one page for the closing challenge

The assessment rule is written into the form: evidence should be current, complete for the service in scope, usable by your organization, tested where capability matters, and linked to a decision. A certificate, policy, screenshot or vendor statement is not enough on its own when it does not prove the specific requirement.