Onchain Development
Build onchain. Ship with confidence.
Smart contracts, stablecoin settlement, agent wallets, and DeFi infrastructure. We build the onchain layer for your business.
Capabilities
End-to-end expertise across the onchain stack.
- Smart Contract EngineeringCode that holds value
Production-grade Solidity contracts with full test coverage, gas optimization, and formal verification. Deployed across EVM-compatible chains.
- Stablecoin IntegrationPayments that settle
USDC and USDT payment flows, treasury operations, and settlement infrastructure. Fiat on/off ramps with compliance-ready architecture.
- x402 Protocol ImplementationHTTP-native payments
HTTP-native payment infrastructure. Servers that accept stablecoin payments at the protocol layer. Pay-per-request APIs and micropayment architecture.
- Agent Wallet InfrastructureAutonomous economic agents
Autonomous wallets for AI agents with programmable spending policies, per-task budgets, and full audit trails. The economic layer for agentic systems.
- DeFi Protocol DevelopmentComposable primitives
Liquidity pools, yield strategies, lending protocols, and automated market makers. Built for security, composability, and real economic utility.
- Token & Asset ArchitectureAssets designed to last
Token design, smart contract deployment, and asset management systems. From fungible tokens to NFTs to IP rights tokenization.
What we build
From protocol prototypes to production infrastructure, built with the discipline of fourteen shipping years. Every project gets the same attention to detail, the same commitment to quality.
- Stablecoin Payment Systems
End-to-end USDC/USDT payment flows with treasury management and compliance tooling.
- Agent Wallet Infrastructure
Programmable wallets for AI agents with spending policies, budgets, and audit trails.
- x402 Paywall Servers
HTTP-native payment middleware that lets servers accept stablecoin payments at the protocol layer.
- DeFi Protocols
Liquidity pools, lending markets, and yield strategies built for security and composability.
- Token Launch Platforms
Token creation, distribution, and governance systems with full smart contract infrastructure.
- Onchain Business Logic
Smart contracts that encode your business rules, automate operations, and settle value onchain.
Why Fortissimo
- New practice, old discipline
Onchain since 2025, shipping software since 2012. The same production standard applies: tested, audited, nothing unproven holding value.
- Tested before trusted
Full test coverage and gas optimization before anything touches mainnet.
- Zero handoffs
One builder, full ownership, start to finish.
The stack
Solidity · Hardhat · Foundry · Ethereum · Base · Solana · USDC · Coinbase AgentKit · Viem · Wagmi · The Graph · IPFS · Alchemy · TypeScript · Node.js · PostgreSQL
Ready to build onchain?
Bring the protocol idea. The discipline is already here.