Custom Web3 Payment Gateway Development
Go beyond standard plugins. Build a secure, compliant, and seamless crypto payment experience that cuts costs and unlocks a new global customer base.
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Why Build a Custom Gateway with Errna?
Off-the-shelf solutions offer convenience but lack the flexibility, security, and control your business needs to truly innovate. We provide a strategic partnership to build a payment infrastructure that becomes your competitive advantage.
Custom-Fit Solutions
We don't force your business into a pre-built box. We analyze your specific user flows, business logic, and revenue models to architect a payment gateway that is a perfect extension of your platform.
Institutional-Grade Security
Leveraging our CMMI Level 5 and SOC 2 compliant processes, we build gateways with security at their core. From audited smart contracts to penetration testing, we protect you and your users' assets.
Simplified User Experience
Onboarding to Web3 shouldn't require a technical degree. We implement solutions like account abstraction and social logins, allowing users to pay with crypto as easily as they would with a credit card.
Compliance-First Approach
Navigate the complex regulatory landscape with confidence. We integrate robust KYC/AML solutions and design systems that are adaptable to future compliance requirements, protecting your business long-term.
Rapid Integration & Deployment
Our developer-first approach means clean APIs, comprehensive SDKs, and expert support. We accelerate your time-to-market, getting your custom payment solution live in weeks, not quarters.
Multi-Chain & Multi-Currency
Don't limit your reach. We build gateways that support multiple blockchain networks (Ethereum, Solana, Polygon, etc.) and a wide array of tokens and stablecoins, giving your users maximum flexibility.
Gas Fee Optimization
High transaction fees kill conversions. We employ advanced strategies, including Layer 2 integrations and gas-efficient smart contract design, to minimize costs for you and your customers.
Full Ownership & Control
Unlike third-party processors, a custom gateway gives you complete control over the user experience, fee structures, and data. You own the infrastructure, giving you a powerful strategic asset.
24/7 Expert Support
Your payment system is mission-critical. Our global team of 1000+ experts provides around-the-clock support and maintenance to ensure your gateway operates flawlessly at all times.
Our Web3 Payment Gateway Services
We offer a comprehensive suite of services to design, build, deploy, and maintain a high-performance, secure, and user-friendly Web3 payment gateway tailored to your exact needs.
Custom Gateway Architecture Design
We lay the foundation for a scalable and secure payment system. Our architects design a robust infrastructure that aligns with your business goals, considering factors like transaction volume, supported chains, and future growth.
- Scalable Infrastructure: Design systems capable of handling high transaction throughput without compromising performance.
- Modular Design: Build a flexible architecture that allows for easy addition of new features, chains, or tokens.
- Security-First Blueprint: Embed security principles at the architectural level to mitigate risks from the ground up.
Smart Contract Development
The core logic of your gateway resides in smart contracts. We develop and rigorously test contracts for payments, escrow, subscriptions, and other business logic, ensuring they are secure, efficient, and bug-free.
- Secure Payment Logic: Code immutable contracts that handle fund transfers reliably and securely.
- Automated Escrow Services: Develop trustless escrow contracts for marketplaces and P2P transactions.
- Gas Efficiency: Write optimized code to minimize transaction costs for your users.
Wallet Integration
A seamless user experience starts with easy wallet connectivity. We integrate a wide range of popular wallets to ensure users can connect and pay with their preferred provider effortlessly.
- Broad Compatibility: Integrate with leading wallets like MetaMask, Trust Wallet, and WalletConnect.
- Embedded Wallet Solutions: Create non-custodial wallets within your application for a smoother onboarding experience.
- Hardware Wallet Support: Enable connections with Ledger and Trezor for users requiring the highest level of security.
Account Abstraction & Social Logins
We bridge the gap between Web2 and Web3. By implementing ERC-4337 (Account Abstraction), we enable features like social logins, gasless transactions, and wallet recovery, removing major friction points for new users.
- Familiar Onboarding: Allow users to create a wallet and sign in using their Google or social media accounts.
- Gas Sponsorship: Pay transaction fees on behalf of your users to create a "gasless" experience.
- Enhanced Security: Implement multi-factor authentication and social recovery for user wallets.
On-Ramp & Off-Ramp Integration
Enable a complete financial loop within your platform. We integrate with leading fiat-to-crypto providers, allowing users to easily buy crypto with a credit card (on-ramp) and convert their crypto back to fiat (off-ramp).
- Global Fiat Access: Connect with providers like Stripe, MoonPay, and Ramp to support users worldwide.
- Seamless User Flow: Embed the on-ramp process directly into your application for a frictionless experience.
- Increased Conversion: Remove the need for users to leave your site to acquire crypto, boosting transaction completion rates.
Cross-Chain Payment Solutions
The future of Web3 is multi-chain. We build gateways that can facilitate payments across different blockchain networks, giving your users the freedom to pay with assets from any ecosystem.
- Interoperability: Utilize bridging technology to accept payments from otherwise incompatible blockchains.
- Expanded Token Support: Accept a wider variety of tokens, regardless of their native chain.
- Future-Proof Platform: Position your business to thrive in an interconnected, multi-chain world.
Subscription & Recurring Billing
Automate recurring revenue streams on the blockchain. We design and implement smart contract logic to handle subscriptions, metered billing, and other recurring payment models reliably and transparently.
- Automated Payments: Create "set-and-forget" subscription models for SaaS and content platforms.
- Transparent Billing: Provide users with a clear, on-chain record of all their recurring payments.
- Flexible Plans: Implement logic for tiered pricing, usage-based billing, and free trials.
KYC/AML Integration
Ensure your platform meets regulatory standards. We integrate with leading identity verification providers to implement seamless Know Your Customer (KYC) and Anti-Money Laundering (AML) checks.
- Regulatory Compliance: Mitigate legal risks by adhering to financial regulations in your operating jurisdictions.
- Fraud Prevention: Screen users and transactions to prevent illicit activities on your platform.
- Tiered Verification: Implement flexible verification levels based on user activity and transaction volume.
Gas Fee Optimization Strategies
High and volatile gas fees are a major pain point. We implement a multi-faceted approach to minimize these costs, including Layer 2 rollups, state channels, and gas-efficient contract design.
- Layer 2 Integration: Leverage networks like Arbitrum and Optimism to achieve near-zero transaction fees.
- Transaction Batching: Bundle multiple transactions together to significantly reduce the overall gas cost.
- Real-Time Gas Price Analysis: Advise users on the optimal time to transact to save on fees.
Transaction Monitoring & Analytics Dashboards
Gain critical insights into your payment ecosystem. We build custom dashboards to monitor transaction health, track key metrics, and provide valuable business intelligence.
- Real-Time Monitoring: Track the status of all transactions and receive alerts for any failures or anomalies.
- Business Intelligence: Analyze data on payment volumes, popular currencies, and user behavior to inform strategy.
- Financial Reporting: Generate reports for accounting, reconciliation, and tax purposes.
Security Audits & Penetration Testing
A vulnerability in your payment system can be catastrophic. We provide comprehensive security services, including third-party smart contract audits and rigorous penetration testing, to identify and eliminate potential threats.
- Smart Contract Audits: Engage reputable auditors to perform a line-by-line analysis of your code for vulnerabilities.
- Economic Attack Simulation: Test for potential exploits related to flash loans and market manipulation.
- Continuous Security Monitoring: Implement tools to monitor for and alert on suspicious on-chain activity.
E-commerce Plugin Development
Easily enable crypto payments on popular e-commerce platforms. We develop custom plugins and extensions for platforms like Shopify, WooCommerce, and Magento, connecting your custom gateway to your online store.
- Seamless Integration: Create a simple, plug-and-play experience for merchants.
- Customizable Checkout: Design a branded checkout experience that matches your store's look and feel.
- Order Management Sync: Ensure transaction data syncs perfectly with your existing order management system.
API & SDK Development
Empower other developers to build on your payment infrastructure. We create well-documented, robust APIs and SDKs that make it easy for third parties to integrate with your gateway.
- Developer-Friendly Documentation: Provide clear, comprehensive guides and code samples.
- Robust SDKs: Offer libraries for popular programming languages (JavaScript, Python, etc.) to speed up integration.
- Create a Platform Ecosystem: Foster innovation by allowing others to build new applications using your payment rails.
Stablecoin Payment Integration
Eliminate price volatility for you and your customers. We prioritize the integration of major stablecoins (like USDC, USDT, and DAI), allowing for crypto payments with the price stability of fiat currency.
- Volatility Mitigation: Price goods and services in a stable currency without exposure to market fluctuations.
- Global Settlement: Settle cross-border payments in seconds for a fraction of a cent.
- Enhanced User Trust: Offer a familiar, dollar-pegged payment option for users wary of volatile assets.
Maintenance & 24/7 Support
Your payment gateway is a mission-critical system that requires ongoing attention. We provide comprehensive maintenance plans and 24/7 support to ensure uptime, security, and smooth operation.
- Proactive Monitoring: Continuously monitor system health to identify and address issues before they impact users.
- Security Patching: Keep all components updated and patched against emerging threats.
- Dedicated Support Team: Provide access to our expert engineers for rapid incident response and troubleshooting.
Proven Success in Decentralized Payments
We don't just build technology; we deliver measurable business outcomes. Explore how we've helped businesses like yours launch innovative and successful Web3 payment solutions.
Optimizing Minting for a Global NFT Marketplace
Client Overview: A leading digital art marketplace was struggling with user complaints during high-demand NFT drops. High gas fees, network congestion, and failed transactions were creating a poor user experience and costing them sales.
The Challenge: They needed a payment and minting flow that was reliable, cost-effective, and could handle thousands of simultaneous transactions without failing.
"Errna's solution transformed our NFT drops from a source of user frustration into a seamless experience. The reduction in failed transactions and gas fees was immediate and significant."
Our Solution:
We engineered a custom, gas-optimized minting contract and integrated a Layer 2 scaling solution. The solution included:
- Implementing an efficient batch minting function.
- Integrating with Polygon to move high-volume transactions off the Ethereum mainnet.
- Building a real-time gas price estimator into the checkout flow.
- Creating a transaction queueing system to manage network congestion.
Streamlining B2B Payments for a SaaS Platform
Client Overview: A B2B SaaS company with a global client base was hampered by the friction of traditional international payments. High wire transfer fees, slow settlement times (3-5 days), and currency conversion issues were creating operational overhead and delaying revenue recognition.
The Challenge: They needed a payment solution that was fast, cheap, and could handle multi-currency invoicing for clients across different continents.
"Switching to a stablecoin-based invoicing system built by Errna has been a game-changer. We're saving thousands on fees monthly, and our finance team loves the instant settlement."
Our Solution:
We developed a custom Web3 payment gateway focused on stablecoin transactions for their invoicing platform. The solution included:
- Integration of USDC and EURC for dollar and euro-pegged payments.
- An automated invoicing system that generated unique payment addresses.
- A dashboard for the finance team to track payments in real-time.
- Integration with a crypto-to-fiat off-ramp for easy conversion to cash.
Unlocking a New Customer Segment for E-commerce
Client Overview: A direct-to-consumer fashion brand wanted to tap into the growing market of crypto-native shoppers. However, they were concerned that the complexity of wallets and seed phrases would alienate their existing customer base and lead to high cart abandonment.
The Challenge: They needed a way to accept crypto payments that was as simple and intuitive as using a credit card or PayPal.
"We wanted to accept crypto without confusing our customers. Errna delivered a solution with social login that made the process incredibly simple. We've seen a fantastic response from a whole new audience."
Our Solution:
We built a custom Shopify plugin connected to a gateway featuring Account Abstraction. This provided a Web2-like user experience:
- Enabled one-click wallet creation using a Google account.
- Sponsored initial transaction fees for new users.
- Designed a checkout flow that abstracted away technical jargon.
- Integrated with their inventory system for seamless order processing.
Technology Stack & Tools
We build with a best-in-class, battle-tested technology stack to ensure your payment gateway is secure, scalable, and ready for the future.
What Our Clients Say
Our success is measured by the success of our clients. We are proud to be the trusted technology partner for innovators across industries.
Errna's expertise in both blockchain and traditional finance was invaluable. They built us a compliant, secure payment gateway that has become a core part of our FinTech platform. Their team feels like an extension of our own.
We needed to integrate crypto payments into our SaaS platform without disrupting our user experience. Errna delivered a solution with Account Abstraction that was so seamless, most of our users don't even realize they're using a crypto wallet. It's brilliant.
The level of detail in their security audit and penetration testing gave us the confidence we needed to go live. In the world of Web3, you can't afford to cut corners on security, and Errna is the best in the business.
As an e-commerce brand, chargebacks were a constant headache. Since launching our stablecoin payment option with Errna, we've had zero chargebacks and our cross-border transaction fees have plummeted. The ROI was almost immediate.
The custom analytics dashboard they built gives us incredible visibility into our platform's economy. We can track transaction flows, user adoption, and other key metrics in real-time, which has been crucial for our strategic planning.
Their 24/7 support has been phenomenal. When you're dealing with mission-critical financial infrastructure, knowing you have an expert team on standby at all hours is priceless. They've been a true partner in our growth.
Frequently Asked Questions
Have questions? We have answers. Here are some of the most common inquiries we receive about building custom Web3 payment gateways.
This is a critical concern. We primarily address this by building gateways that heavily feature stablecoins (like USDC, USDT) which are pegged 1:1 to fiat currencies like the US Dollar. This allows you to price goods and receive payments with the stability of fiat, while still getting the benefits of blockchain. For volatile assets, we can integrate real-time price oracles to lock in an exchange rate at the moment of transaction.
When built correctly, yes. A custom gateway is built specifically for your threat model and business logic, reducing the attack surface. We conduct exhaustive security audits and penetration tests on your unique codebase. Off-the-shelf solutions, while often secure, can be larger targets for attackers looking for widespread vulnerabilities. Our process ensures your security is bespoke and robust.
The timeline varies based on complexity, but it's faster than you might think. A Minimum Viable Product (MVP) with core payment functionality can often be deployed in 8-12 weeks. More complex systems with features like cross-chain support or recurring billing may take 4-6 months. Our agile process focuses on delivering value incrementally and getting you to market quickly.
Compliance is non-negotiable. We integrate with industry-leading identity verification and transaction monitoring services (like Chainalysis, Sumsub, etc.) to ensure you meet KYC/AML requirements in your jurisdictions. We design the system to be flexible, so it can adapt as regulations evolve.
This is where our focus on user experience shines. We use Account Abstraction (ERC-4337) to enable social logins (e.g., "Sign in with Google") which creates a non-custodial wallet in the background. We also integrate fiat on-ramps, so users can buy their first crypto with a credit card directly within your app, creating a completely self-contained and simple onboarding flow.
The key benefits are lower costs, global access, and elimination of chargebacks. Traditional payment processors charge around 2.9% + $0.30 per transaction; blockchain fees can be a fraction of that. Payments are settled globally in seconds, not days. Most importantly, because blockchain transactions are irreversible, fraudulent chargebacks are a thing of the past.
Ready to Future-Proof Your Payments?
Stop losing revenue to high fees, chargebacks, and outdated payment rails. Let's build a Web3 payment gateway that gives you a competitive edge and opens up a new world of possibilities.
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