Payment Technology
for the Digital Economy
PLAINSITE delivers payment processing, intelligent routing, merchant settlement facilitation, and crypto payment infrastructure — through secure, modern APIs.
From customer authorization to merchant settlement
A single programmable rail orchestrates authorization, processing, routing, and merchant settlement facilitation across fiat and digital assets.
Crypto payments, embedded into your stack
Accept stablecoins and major cryptocurrencies, then facilitate merchant settlement in the asset of your choice through a single integration.
Multi-chain payment mesh
USDC and USDT across major networks, with automatic FX reference pricing.
Route payments across leading blockchains using best-execution logic.
Composable APIs for crypto checkout, invoicing, and on-chain capture.
Address screening, sanctions checks, and configurable approval rules.
Estimate your merchant settlement from a crypto payment
Select an asset, enter an amount, and we will use live market pricing to estimate the fiat value after PLAINSITE’s 5.5% payment processing fee.
Estimated Settlement
Estimates use live reference prices from public market data sources and are for illustration only. Final settlement may vary with network conditions, FX, and execution at time of capture. PLAINSITE provides payment processing technology and does not hold customer funds.
A modern payment technology stack
Eight programmable surfaces, one unified API. Composable, observable, and built for merchants and platforms.
Card, bank, and wallet acceptance with intelligent routing.
Best-execution orchestration across global rails and corridors.
Merchant payout facilitation with reconciliation and reporting.
Stablecoin and major-asset acceptance via a single integration.
Composable primitives for checkout, invoices, refunds, and webhooks.
Multi-currency processing with embedded compliance and reporting.
Sanctions, KYC/KYB, and transaction monitoring tooling.
Hosted checkout, plugins, and developer-grade integrations.
Built for serious payment operators
Qualitative capabilities we deliver, designed to make your team faster and your finance stack cleaner.
Drop-in SDKs, hosted checkout, and webhooks ship in days, not quarters.
Encryption at every layer, with zero-trust networking and isolated key handling.
Typed SDKs, predictable responses, idempotent endpoints, and rich documentation.
Reconciliation, reporting, and merchant payout facilitation as first-class primitives.
Accept and settle in stablecoins or major digital assets through one integration.
Operational rigor, audit-grade logging, and clear contractual posture.
Engineered for payment-grade reliability
The PLAINSITE stack draws from modern distributed systems and cryptography — engineered for correctness and predictable behavior.
import { Plainsite } from "@plainsite/sdk"; const ps = new Plainsite({ apiKey: process.env.PLAINSITE_KEY, }); // Accept crypto, settle to merchant await ps.payments.create({ amount: 48210_00, currency: "USD", accept: ["BTC", "ETH", "USDC"], routing: "best_execution", });
Enterprise-grade controls on every transaction
Modern cryptographic guarantees and operational rigor, applied to every authorization and payment event.
Modern TLS, AES-256, and FIPS-validated cryptographic primitives.
Anomaly detection and automated incident response workflows.
Zero-trust networking and hardware-isolated key handling.
Multi-region active/active architecture with deterministic failover.
Policy engine, sanctions screening, and transaction monitoring.
Built with the teams it serves
PLAINSITE’s payment APIs let our team replace a tangle of legacy integrations with one programmable rail. Reconciliation finally feels boring — in the best way.
The crypto payment primitives are the cleanest we’ve evaluated. It feels like infrastructure that was designed with a real merchant ops team in the room.
Our integration shipped in under two weeks. Routing logic and the SDK ergonomics are the difference between a payment provider and a payment platform.
Talk to our integrations team
Tell us about your payment flows, currencies, and timelines. We’ll architect a path with you.