Cloudservify
API security audits for payment providers — authentication, webhooks, and control evidence that holds up when funds and assessors are on the line.
Primary engagement
Payment API Security Audit — a structured review of how your payment APIs authenticate clients, authorise money movement, and resist abuse across gateways, tokenisation, and partner callbacks.
You leave with a ranked findings report, an evidence pack your compliance team can reuse, and a remediation sequence engineering can schedule. Fees on this site are guides only; work starts after a written proposal.
Related audit work
Request a single module or combine reviews before a launch, partner onboarding, or PCI assessment.
Payment API Security Audit
A full review of authentication, authorisation, encryption, and abuse controls across your payment APIs.
PCI-Aligned API Control Review
Map payment API controls to PCI DSS expectations and close gaps before assessor interviews.
Webhook & Partner Surface Audit
Stress-test callbacks, partner APIs, and shared secrets that sit on the edge of your payment stack.
Pre-Launch API Hardening Review
A time-boxed security pass before a new payment API or major version goes live.
What clients say
Payment teams who needed their API security story to match production reality.
Cloudservify mapped our payout and tokenisation APIs to real abuse paths. The remediation sequence was something our engineers could actually schedule.Mei Ling Cheung — Head of Platform Security, regional wallet provider
We went into our PCI assessment with an API control matrix and evidence samples ready. Assessor interviews were shorter and far less painful.Daniel Ho — Compliance Lead, acquiring fintech
The webhook review found a retired partner key still accepted on a host we thought was decommissioned. That alone justified the engagement.Priya Nair — VP Engineering, cross-border payments firm
Common questions
Who is this work for?
Payment providers, acquirers, wallet operators, and fintechs that expose APIs moving or influencing funds. We work with security, compliance, and platform engineering teams in Hong Kong and the wider region.
Do you run penetration tests?
Our core offer is structured API security audits — control review, abuse path analysis, and evidence for compliance. Where a full penetration test is needed, we can coordinate scope with your preferred testing partner or advise on what to request.
How do engagements start?
Send a short description of your payment APIs and timeline via the contact form. We reply with scoping questions, then a written proposal with fees, duration, and deliverables. Work begins only after you accept the proposal.
Are the prices on this site fixed?
No. Listed fees are informational guides. Final pricing depends on API surface size, environments in scope, and whether you need a retest. There is no online checkout.