Meme Sentinel

Multi-agent DeFi platform with fast Envio indexing, memecoin trading using Hedera Agentkit and A2A

Meme Sentinel

Created At

ETHOnline 2025

Project Description

Meme Sentinels is an AI-powered DeFi intelligence platform designed to make memecoin investing safer, faster, and data-driven. In today’s memecoin ecosystem, thousands of new ERC-20 tokens appear daily, making it nearly impossible for new investors to analyze and identify promising projects. Meme Sentinels solves this problem by automatically discovering, analyzing, and ranking tokens using advanced multi-agent AI architecture and real-time on-chain data.

Using Envio Hypersync, the platform fetches and analyzes data from over 2,300 ERC-20 tokens at high speed. Each token is evaluated through an aggregate script that measures liquidity, market cap, yield, pairs, and transaction history. This creates an on-chain score that reflects each token’s overall performance and stability. Alongside this, the platform analyzes social sentiment from Twitter (X) and Reddit for the top 50 memecoins, processing posts and mentions to produce a social aggregate score. These two components are then combined to form a final Meme Sentinel Score, which updates dynamically — every 5 minutes for the top 20 tokens, every 20 minutes for the top 100, and every 30 minutes for the rest — ensuring users always have access to fresh, accurate insights.

Beyond token metrics, Meme Sentinels performs wallet analysis to identify high-performing traders and researchers in the memecoin space. By tracking wallets that consistently gain profits from top tokens, the system learns from their patterns and monitors their latest investments. This allows regular users to discover potentially profitable opportunities early, following smart money movements in real time.

The platform also integrates an AI trading agent directly with a smart contract, allowing users to deposit funds securely. The AI agent has permission only to buy and sell tokens via Uniswap v2 routes, never to withdraw user funds — ensuring complete fund safety. All trades and contract data are continuously fetched and verified through Envio Hypersync, enabling automated, transparent, and hands-free DeFi trading.

At its core, Meme Sentinels runs on a network of six AI agents working in harmony:

  1. The Scout Agent discovers newly launched tokens using DEX data.
  2. The Yield Agent calculates liquidity, yield, and market cap from DeFi sources like CoinGecko and DeFiLlama.
  3. The Risk Agent detects vulnerabilities such as honeypots, rugpulls, and volatility risks.
  4. The Alert Agent aggregates all data and generates Buy, Watch, or Avoid signals.
  5. The Settlement Agent stores immutable records of alerts and AI decisions on the Hedera network using the Hedera Consensus Service (HCS).
  6. Finally, the Orchestrator Agent manages communication between all agents using Google A2A for seamless coordination.

The platform concludes with a Personal Assistant Agent, powered by Groq, that allows users to chat with the system to get personalized insights, risk breakdowns, and market analytics in plain language.

In essence, Meme Sentinels combines AI, blockchain data infrastructure, and decentralized execution to create a complete DeFi intelligence layer for memecoins — giving users transparency, automation, and security while protecting their investments and helping them make informed decisions in a volatile market.

How it's Made

Meme Sentinels is built as a multi-layered platform combining blockchain data aggregation, AI agent orchestration, and a DeFi trading interface to provide a seamless intelligence and trading experience for memecoin investors. At its core, the platform leverages Envio Hypersync for high-speed, multi-chain blockchain data streaming across Ethereum, Polygon, Arbitrum, Base, and Optimism. The backend, built in Node.js and TypeScript with Express.js APIs, handles token discovery, metadata enrichment, and transaction analysis in real time. Performance is optimized using caching strategies, batch processing, and strict TypeScript enforcement to manage thousands of tokens simultaneously.

The frontend, developed with Next.js 16, integrates wallet connectivity via RainbowKit and Wagmi v2, allowing users to securely interact with smart contracts. The trading interface incorporates a custom Uniswap V2 router with approval workflows, slippage protection, and real-time balance tracking. UI and responsiveness are handled via Tailwind CSS and Radix UI components, with React Query and hooks managing server and local state efficiently.

At the heart of Meme Sentinels is a six-agent AI network coordinated via Google’s A2A Protocol. Each agent—Scout, Yield, Risk, Alert, Settlement, and Orchestrator—runs on a separate port with automated message passing, using a pub/sub pattern for real-time communication. These agents are modular, inheriting from a BaseAgent class, making it easy to add new intelligence capabilities. They integrate data from CoinGecko, DeFiLlama, and DEX APIs to calculate token liquidity, market cap, yield, social sentiment, and risk scores. Natural language insights and personalized analytics are powered by Groq integration.

For blockchain execution and audit, the platform interacts directly with smart contracts using Viem for type-safe Ethereum operations and logs all AI-generated decisions immutably on Hedera Consensus Service (HCS) via Hedera Agentkit. This ensures full transparency and regulatory compliance while enabling secure automated trading without the AI having withdrawal access to user funds.

Notable technical innovations include cross-chain token routing, which dynamically determines the correct Hypersync endpoint for a token and caches successful matches, and concurrent agent processing, enabling simultaneous evaluation of 1000+ tokens. By integrating A2A protocols with live DEX trading, the project demonstrates a potentially unique hackathon-first approach to autonomous agent-powered trading.

Partner technologies significantly boosted efficiency: Envio Hypersync reduced blockchain query times from minutes to seconds; Hedera offered low-cost, high-frequency audit logging; RainbowKit simplified wallet integration; and the A2A Protocol enabled standardized, modular AI agent communication.

Tech Stack Summary:

Frontend: Next.js 16, React 19, TypeScript, Tailwind CSS, Radix UI Wallet / Blockchain: Envio Hypersync, Hedera Agentkit, RainbowKit, Wagmi v2, Viem, Uniswap V2 Router, Hedera HCS Backend: Node.js, Express.js AI / Automation: Google A2A Protocol, Groq integration External APIs: CoinGecko, DeFiLlama,

Through this architecture, Meme Sentinels achieves high-speed token discovery, real-time AI-driven analytics, and automated, secure DeFi trading, offering a unique combination of transparency, speed, and actionable intelligence for memecoin investors.

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