We architect and deploy custom smart contracts on EVM-compatible chains (Ethereum, Polygon, Arbitrum) and Solana. Our focus is security-first development with formal verification, comprehensive testing, and OpenZeppelin best practices to protect your assets and users.
LABS
Services
Gasless Transaction API & SDK Development
Build and integrate custom gasless transaction sponsorship into your dApp. We deliver production-ready APIs, SDKs, and dashboards to abstract gas complexity and improve user experience.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 specialists for FinTech and crypto startups.
- Token Standards:
ERC-20,ERC-721,ERC-1155, and SPL token implementations. - DeFi Protocols: Custom DEXs, lending/borrowing platforms, staking, and yield aggregators.
- Enterprise Logic: Multi-signature wallets, vesting schedules, and governance modules.
- Full Audit Support: We prepare code for third-party audits and implement findings.
Deliver a secure, gas-optimized MVP in as little as 2-4 weeks, backed by a 99.9% uptime SLA for deployed contracts.
key-features-cards
END-TO-END INFRASTRUCTURE
Core Components We Deliver
We build and manage the complete technical stack required for a seamless, secure, and scalable gasless transaction experience. Our modular components are production-ready and integrate in days, not months.
03
Paymaster & Relayer Infrastructure
High-availability infrastructure to sponsor transaction fees. Includes multi-chain support, real-time gas price optimization, and configurable sponsorship policies (user pays, dApp pays, hybrid).
99.9%
Uptime SLA
10+ Chains
Supported
04
Security & Audit Framework
All smart contracts (Account Factory, Paymaster) undergo rigorous audits using industry-standard tools (Slither, MythX) and are built with OpenZeppelin libraries. Includes monitoring for anomalous sponsorship patterns.
OpenZeppelin
Libraries
24/7
Threat Monitoring
05
Analytics & Usage Dashboard
Real-time dashboard to monitor transaction volume, gas sponsorship costs, user adoption metrics, and wallet activity. Enables data-driven decisions for your growth strategy.
Real-time
Data
Cost Analytics
Feature
06
Multi-Chain Deployment Kit
Pre-configured deployment scripts and configurations for Ethereum L2s (Arbitrum, Optimism, Base) and other EVM-compatible chains. Ensures consistent gasless experience across your ecosystem.
1-Click
Deployment
EVM
Compatibility
benefits
MEASURABLE RESULTS
Business Outcomes for Your dApp
Our Gasless Transaction API & SDK are engineered to deliver concrete improvements to your core business metrics, from user acquisition to operational efficiency.
01
Eliminate Onboarding Friction
Remove the need for users to hold native tokens or understand gas fees. Our SDK enables one-click interactions, dramatically increasing conversion rates and lowering the barrier to entry for mainstream users.
40-70%
Higher Conversion
0
Gas Knowledge Required
02
Predictable Operational Costs
Shift from variable, user-paid gas fees to a fixed, predictable cost model. Our flexible sponsorship policies (pay-per-user, subscription, or hybrid) give you complete control over your transaction budget.
Fixed
Cost Per TX
100%
Budget Control
03
Enterprise-Grade Reliability
Deploy with confidence on infrastructure built for scale. Our multi-chain relay network and automated failover ensure your users' transactions are processed without interruption, backed by robust SLAs.
99.9%
Uptime SLA
< 500ms
Relay Latency
04
Accelerated Time-to-Market
Integrate a production-ready gasless experience in days, not months. Our comprehensive SDKs for React, React Native, and Flutter, coupled with detailed documentation, get your feature live faster.
< 1 week
Integration Time
5+
Supported Chains
05
Enhanced Security & Compliance
Leverage battle-tested smart account infrastructure (ERC-4337) and session keys. Every sponsored transaction is validated by our secure relayer network, mitigating front-running and ensuring policy adherence.
ERC-4337
Standard
Audited
Relayer Logic
06
Actionable User Insights
Gain deep visibility into user behavior and transaction performance. Our dashboard provides real-time analytics on sponsored volume, user cohorts, and cost efficiency, enabling data-driven product decisions.
Real-time
Analytics
Cohort Analysis
User Insights
Structured for Growth
Gasless API & SDK Development Tiers
Choose the development and support package that matches your project's scale and security requirements.
| Feature / Support | Starter | Professional | Enterprise |
|---|---|---|---|
Custom Gasless SDK Integration | |||
Paymaster Smart Contract Development | |||
Smart Contract Security Audit | |||
Multi-Chain Deployment (EVM) | 1 Chain | Up to 3 Chains | Unlimited |
Developer Support SLA | Email (72h) | Priority Slack (24h) | Dedicated Engineer (4h) |
Uptime & Performance Monitoring | Basic Alerts | Advanced Dashboards | Custom SLA (99.9%) |
Relayer Infrastructure Scaling | Up to 100 TPS | Up to 1,000 TPS | Custom High-Availability |
User Session Management Module | |||
Compliance & Fraud Detection Tools | |||
Estimated Delivery | 3-4 Weeks | 6-8 Weeks | Custom Timeline |
Starting Price | $25K | $75K | Custom Quote |
how-we-deliver
PREDICTABLE DELIVERY
Our Development Process
A structured, transparent approach to delivering production-ready gasless infrastructure. We focus on security, speed, and seamless integration from day one.
01
Architecture & Design Review
We analyze your dApp's transaction flows and user journey to architect the optimal gasless strategy—sponsoring, meta-transactions, or paymasters—ensuring cost-efficiency and scalability.
1-3 days
Strategy Finalization
Multi-chain
Architecture Scope
02
Smart Contract Development & Auditing
Our engineers build and harden the core relay and paymaster contracts using OpenZeppelin libraries. Every contract undergoes internal review and is prepared for third-party audit.
OpenZeppelin
Security Standard
100%
Test Coverage
03
SDK & API Integration
We deliver a lightweight, type-safe SDK (React/Node.js) and a robust REST API for managing gas policies, sponsoring rules, and real-time transaction status, with full documentation.
< 2 weeks
Integration Ready
TypeScript
Primary SDK
04
Testing & Staging Deployment
Comprehensive testing on testnets (Sepolia, Amoy) simulating mainnet conditions. We validate user experience, sponsor wallet management, and failure edge cases before go-live.
Testnet
Full Simulation
SLA Defined
Performance Baseline
05
Production Launch & Monitoring
We manage the mainnet deployment of your gasless system and provide a dashboard for monitoring usage, costs, and success rates, with alerts for abnormal activity.
24/7
Initial Monitoring
99.9%
Reliability SLA
06
Ongoing Support & Optimization
Post-launch, we offer support packages for maintenance, gas strategy optimization based on usage data, and updates for new EIPs or chain integrations.
Enterprise
Support Tiers
Continuous
Cost Optimization
security
SECURE FOUNDATIONS
Custom Smart Contract Development
Production-ready smart contracts built with enterprise-grade security and gas optimization.
We architect and deploy secure, auditable smart contracts that form the core logic of your dApp. Our development process integrates formal verification and comprehensive testing to mitigate risks before deployment.
- Protocol Development: Custom
ERC-20,ERC-721, andERC-1155tokens, DeFi primitives (AMMs, lending/borrowing), and governance systems. - Security First: Built on
Solidity 0.8+with OpenZeppelin libraries, following industry best practices for access control and upgradeability. - Gas Optimization: Expert-level code to minimize transaction costs, critical for user adoption and protocol efficiency.
- Full Audit Support: Code is structured for seamless review by leading security firms, with remediation guidance included.
Deliver a secure, audited, and gas-efficient smart contract suite in 4-6 weeks, providing a battle-tested foundation for your product.
Gasless API & SDK
Frequently Asked Questions
Get clear answers on our development process, security, and support for your gasless transaction infrastructure.
A standard, production-ready gasless SDK with core features (sponsorship, relay, multi-chain support) typically takes 3-5 weeks from kickoff to deployment. Complex integrations with custom paymasters or advanced user session management can extend to 6-8 weeks. We provide a detailed sprint-by-sprint breakdown in our initial proposal.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall