# Etherwave Labs

> Etherwave Labs is a blockchain and AI development agency. We design, build, and ship full-stack Web3 products: smart contracts, dApps, DeFi protocols, Telegram mini apps, NFT platforms, and the backends and AI agents around them. We work with startups and established brands across EVM chains, Solana, and Hedera.

Ten years building software, five focused on blockchain and DeFi, and a track record of products used by more than 100,000 people. The primary way to start a project is the short intake form, which leads to a 30 minute strategy call and a scope, timeline, and quote.

## Company

- Legal entity: Etherwave Labs OÜ, registered in Tallinn, Estonia.
- Team: Esteban Pattin--Bas (full-stack blockchain developer), Thomas Cosialls (full-stack blockchain and AI developer), Justin Olivier (blockchain and AI developer).
- Recognition: 2nd place in the Coinbase Integration track at the WalletConnect Hackathon; winner of the Funding the Commons RealFi Hackathon 2025 (human.tech integration).
- Languages: English and French. Every page has a French version under https://www.etherwavelabs.com/fr

## Services

- [Telegram Mini App Development](https://www.etherwavelabs.com/services/telegram-mini-apps): real-time multiplayer games, token and reward economies, TON Connect and EVM wallet onboarding, referral loops, and the websocket backends that keep them up.
- [Vibe Code Audit](https://www.etherwavelabs.com/services/vibe-code-audit): independent code audit for apps built with Lovable, Bolt, v0, Replit, Cursor, or Claude Code. Eight graded dimensions, from secrets and access control to tests and cost exposure, with a written report in 48 hours.
- [x402 Payment Integration](https://www.etherwavelabs.com/services/x402): pay-per-request USDC monetization for APIs and AI agents with the open x402 protocol, with no accounts, no API keys, and no protocol fees.
- [Liquidity Management Automation](https://www.etherwavelabs.com/services/liquidity-management-automation): automated rebalancing, fee compounding, reward claiming, and monitoring for concentrated-liquidity positions on Uniswap v3/v4, Slipstream, Algebra V1, Raydium, and Orca, running 24/7 and non-custodial.

We also take on custom work beyond these packaged services:

- Smart contract development: tested, audit-ready Solidity (ERC20, ERC721, ERC1155, custom protocols) deployable on any EVM chain, with Foundry and Hardhat.
- dApp and Web3 frontend development: Next.js, React, and Expo front ends wired to wallets and on-chain data, with onboarding that hides crypto complexity.
- DeFi protocol development: lending and borrowing protocols, non-custodial liquidity managers, liquidity-pool simulators, subgraph indexing, and on-chain analytics.
- Web3 backend and infrastructure: databases, indexers, bots, real-time servers, and CI/CD built to stay up under load.
- AI agents for blockchain: autonomous agents for automated trading, liquidity management, and predictive analytics.

## Case studies

- [SpyClub](https://www.etherwavelabs.com/projects/spyclub): real-time multiplayer Telegram Mini App game that onboarded 100,000+ players, with the SpyCoin ERC20 token live on Hedera Mainnet.
- [Ethereum Credit Guild](https://www.etherwavelabs.com/projects/ethereum-credit-guild): full frontend for an oracle-free lending and borrowing protocol with leverage, on-chain DAO governance, and an analytics dashboard.
- [The Smurfs Society](https://www.etherwavelabs.com/projects/the-smurfs-society): Web3 gaming and NFT platform for the Smurfs IP, 80,000+ wallets connected and 3M+ Polygon transactions, with ERC721 and ERC1155 contracts on Ethereum and Polygon.
- [Kleek](https://www.etherwavelabs.com/projects/kleek): blockchain event platform that uses on-chain incentives to cut no-shows. 2nd place in the Coinbase Integration track at the WalletConnect Hackathon.
- [YieldBase](https://www.etherwavelabs.com/projects/yieldbase): non-custodial active liquidity manager that routes capital to the best-performing pools.
- [Metrix Finance](https://www.etherwavelabs.com/projects/metrix-finance): all-in-one simulator that helps liquidity providers model pool outcomes before committing capital.
- [proof2work](https://www.etherwavelabs.com/projects/proof2work): open tool to search all smart contracts deployed by any address across Ethereum, Polygon, Arbitrum, and Optimism.

## Guides

Hands-on technical tutorials written by the team. Code samples are in TypeScript unless noted.

- [Circle CCTP Explained: Moving Native USDC Across Chains, and In and Out of Hyperliquid](https://www.etherwavelabs.com/blog/circle-cctp-usdc-bridge-hyperliquid-deposit-withdraw): how CCTP burns and mints native USDC across chains (attestations, Fast vs Standard transfers, hooks), then depositing USDC into Hyperliquid's HyperCore and withdrawing it back.
- [Circle Nanopayments Explained: Gas-Free USDC Payments Down to $0.000001](https://www.etherwavelabs.com/blog/circle-nanopayments-gasless-usdc-micropayments-tutorial): how Gateway's batched settlement makes sub-cent USDC payments economical, with a Node.js integration that an AI agent pays gas-free.
- [Gate an API Endpoint with x402: Accept USDC Payments on Your Node.js Server](https://www.etherwavelabs.com/blog/gate-api-endpoint-x402-usdc-node-js): gate an Express endpoint behind a USDC price on Base, then pay it programmatically from JavaScript and Python clients.
- [Uniswap v4 Explained: What Changed From v3, How Hooks Work, and a Complete Liquidity Management Tutorial](https://www.etherwavelabs.com/blog/uniswap-v4-vs-v3-liquidity-management-hooks): the singleton PoolManager, flash accounting, and hooks compared to v3, then every position operation (mint, increase, decrease, collect fees, burn).
- [The Guide for Collecting Fees and Rewards from Orca Whirlpool Positions](https://www.etherwavelabs.com/blog/the-guide-for-collecting-fees-and-rewards-from-orca-whirlpool-positions): collecting trading fees and rewards from Orca Whirlpool positions with Anchor and the whirlpool_cpi crate (Rust).
- [Building Autonomous Crypto Trading Bots with ElizaOS](https://www.etherwavelabs.com/blog/building-autonomous-crypto-trading-bots-with-elizaos-a-complete-technical-guide): market analysis, decision logic, and TEE deployment for AI trading agents.
- [Building Your Custom AI Agent with ElizaOS](https://www.etherwavelabs.com/blog/building-your-custom-ai-agent-with-elizaos-from-setup-to-deployment): from environment setup to deploying an agent on social platforms.
- [Building SpyClub: A Complete Guide to Modern Telegram Mini App Development](https://www.etherwavelabs.com/blog/building-spyclub-a-complete-guide-to-modern-telegram-mini-app-development): how the SpyClub Telegram Mini App was built: real-time multiplayer, on-chain rewards, and Web3 integration.
- [Central Limit Order Books (CLOBs) vs AMMs](https://www.etherwavelabs.com/blog/central-limit-order-books-clobs-vs-amms-a-comprehensive-guide-for-defi-trading): how CLOB DEXs such as Hyperliquid address AMM limitations.
- [Secure Ethereum Sign-In with Next.js Using WalletConnect's AppKit](https://www.etherwavelabs.com/blog/secure-ethereum-sign-in-with-next-js-using-walletconnect-appkit): Sign In With Ethereum (SIWE) in Next.js, with API routes secured by next-auth.
- [The Power of Subgraphs to Access Blockchain Data and How to Build One with Alchemy](https://www.etherwavelabs.com/blog/the-power-of-subgraphs-to-access-blockchain-data-and-how-to-build-one-with-alchemy): why subgraphs beat raw RPC calls for dApp data, and a step-by-step build.

## Optional

- [From Chats to Chains: TON Blockchain and the Rise of Telegram Mini Apps](https://www.etherwavelabs.com/blog/from-chats-to-chains-ton-blockchain-and-the-rise-of-telegram-mini-apps)
- [The Rise of AI Agents: Transforming Business Operations Through Intelligent Automation](https://www.etherwavelabs.com/blog/the-rise-of-ai-agents-transforming-business-operations-through-intelligent-automation)
- [Become Your Own Bank by Leveraging Blockchain](https://www.etherwavelabs.com/blog/become-your-own-bank-by-leveraging-blockchain)

## Contact

- Start a project: https://form.typeform.com/to/HbwSKEbY
- Blog and guides: https://www.etherwavelabs.com/blog
- All case studies: https://www.etherwavelabs.com/projects
- GitHub: https://github.com/etherwave-labs
- LinkedIn: https://www.linkedin.com/company/etherwave-labs