Embed Reyna Pay into any POS or vertical SaaS.
Open API, modern SDKs, webhook events for transactions. Embed payment processing into your existing POS, vertical SaaS product, or custom software. Compliant, scalable, transparent.
Built your own POS or SaaS? Your processor should be easy to embed.
Most processors are designed for end-merchants, not for software developers embedding payments. Their APIs are crusty, their docs are outdated, and their support engineers don't know what a webhook is. We built Reyna Pay's API for developers first.
- →You built a vertical SaaS, payments are an afterthought integrated badly.
- →Your existing POS works fine but the processor's SDK is from 2014.
- →API documentation is incomplete, you spend more time guessing than building.
- →Webhooks are unreliable, you end up polling for transaction status.
What developer-first processing infrastructure delivers.
Real outcomes from POS and SaaS companies embedding Reyna Pay.
Modern, well-documented, developer-friendly.
Our API is REST. Our docs include working code examples. Our SDKs are maintained. Our webhooks deliver reliably (with retries). Our support engineers can answer technical questions. We treat developers like customers, because you are.
Features built for pos integration.
REST API with comprehensive docs
Modern HTTP API. JSON payloads. Bearer auth. Idempotency keys. Comprehensive docs with working code examples. The API a developer would want to use.
Webhook event delivery
Transaction events, chargeback events, settlement events, all delivered via webhooks. Retried on failure. Signed for verification. The event-driven integration you'd build yourself.
Hosted checkout iframe
Embed our checkout iframe in your product, PCI scope drops to near zero. Customer card data never touches your systems. Tokens come back to you for storage.
SDKs for major languages
Server-side SDKs for the languages developers actually use. Client-side SDKs for web and mobile. Sample apps for common integration patterns.
Where this solution wins.
Vertical SaaS adding payments
Embed payments into your industry-specific software, capture margin on every transaction your customers process.
Custom POS for a specific niche
Built your own POS for a vertical, integrate Reyna Pay for the payment processing layer.
E-commerce platform
Hosted checkout iframe on your storefront, customer pays, you don't touch card data.
Marketplace with split payments
Take payment from buyer, split to multiple sellers, all through the same API integration.
Internal enterprise software
B2B platform that handles invoicing and payment, integrate processing through API.
Common questions about pos integration.
Server-side SDKs for major languages including Node.js, Python, Ruby, Java, PHP, and Go. Client-side SDKs for web (JS) and mobile (iOS, Android).
We POST signed JSON payloads to your endpoint URL on transaction events, chargeback events, settlement events, etc. Failed deliveries retry on an exponential backoff schedule.
Yes, but generously. Standard rate limits are 100 req/sec per merchant. Higher limits available for high-volume integrations.
Yes. Card data tokenizes once, you store the token, charge it as many times as needed without re-collecting card data. PCI scope drops dramatically.
Built for these verticals.
Ready to use pos integration?
Apply in two minutes. Most merchants approved within 24 hours.