RelAI

We are building the first decentralized reputation registry for AI agents, enabling trust to be portable, auditable, and censorship-resistant across chains. Today, AI agents are increasingly autonomous — making financial decisions, executing trades, negotiating contracts, and performing tasks in decentralized ecosystems. However, their reputation is fragmented, siloed off-chain, and easy to spoof. Malicious actors can clone an agent, inflate reputation metrics, or propagate false trust signals across ecosystems. Our solution is a DAO-governed reputation layer anchored on-chain, powered by Chainlink Functions, cross-chain messaging (CCIP), and Hedera smart contracts. Reputation scores are sourced from APIs such as artificialanalysis.ai via Chainlink Functions, then brought on-chain and stored in our ReputationManager.sol registry deployed on Hedera. Governance is managed by a DAO on Sepolia, where stakers propose and vote on agent onboarding, reputation updates, and slashing misbehaving agents. To prevent malicious reputations from diverging across ecosystems, we use Chainlink CCIP (future integration) to synchronize reputation state across chains. Most importantly, we extend beyond just “reputation storage.” AI agents can now directly leverage their on-chain trust profile to transact via autonomous microtransactions powered by x402, integrated with Coinbase Wallet. This makes our registry not only a trust layer, but also a payments layer for agent-to-agent and agent-to-human interactions, unlocking new economies around verified agents. By building on Hedera (using the Hedera Agent Kit SDK), we ensure low-cost, high-throughput reputation anchoring. On Zircuit, our project leverages sequencer-level guarantees to ensure censorship-resistant, properly ordered reputation updates, and Account Abstraction for gasless participation. Together, this creates a robust foundation for the AI-native Web3 economy. Our vision: to make Coinbase Wallet the default trust anchor for AI agents, Zircuit the infrastructure backbone, and Hedera the first live deployment site for a global, decentralized agent reputation registry.

We built the project across multiple components, tying together several bleeding-edge technologies in a hackathon timeframe:

-> Smart Contracts (Hedera, Solidity)

• Deployed ReputationManager.sol on Hedera using the Hedera Agent Kit SDK.
• Stores canonical agent reputation entries on-chain.
• Provides APIs for dApps, marketplaces, and wallets to query agent trust data.

-> Governance DAO (Sepolia, Solidity)

• The DAO is being built on Sepolia testnet.
• Designed to govern onboarding, reputation updates, and slashing of agents.
• Future integration with CCIP will let DAO proposals update Hedera and other chains.

-> Chainlink Functions (planned)

• Calls artificialanalysis.ai to retrieve and extrapolate agent reputation scores.
• Returns signed results for secure, verifiable on-chain updates.

-> Cross-Chain Messaging (planned with Chainlink CCIP)

• Will synchronize reputation across Ethereum, Hedera, Zircuit, and beyond.
• Prevents cloned/malicious reputations from propagating to other ecosystems.

-> x402 Payments + Coinbase Wallet (implemented)

• Autonomous agent-to-agent microtransactions enabled via x402.
• Integrated with Coinbase Wallet to handle custody, security, and seamless onboarding.

This hack is especially notable: we got agents to pay each other directly using Coinbase Wallet rails in a trust-minimized way — proving AI agents can transact natively in Web3.

-> Hackie Bits Worth Highlighting

• Cross-protocol deployment: smart contracts on Hedera, DAO on Sepolia, payment rails via x402.
• Hybrid architecture: decentralized registry + centralized reputation signals (API) bridged securely via Chainlink.
• Agent-first design: every piece is built for agents as the end-users (wallets, payments, governance).
• Coinbase Wallet integration: not just an afterthought — fully functional, proving a real-world agent-wallet economy.