Investigation Report: Zyfai Rebalancer Agent (8453:1976)
Summary
Zyfai Rebalancer Agent is a ZK-powered DeFi yield optimization agent registered on Base (ERC-8004 token #1976). It is built by the Ondefy/Zyfai team, which has a legitimate track record in the zkSync paymaster ecosystem. The agent claims to find low-risk yield opportunities across Base, Arbitrum, and Plasma using Circom ZK circuits and Groth16 proofs.
Verdict: 🟢 GREEN (78/100)
Registration Data
- Token ID: 1976 on Base (chain 8453)
- Owner: 0x528231DEfD629eEA74537814e81C0Aa31BbafD7D
- URI: IPFS-hosted, valid JSON with complete metadata
- Status: Active
- Capabilities: MCP endpoint, web endpoint
- Technology: Circom 2.2.2+, SnarkJS 0.7.5 (Groth16)
On-Chain Analysis
- Owner wallet has 0 ETH balance on Base with nonce of 1 (minimal on-chain activity on this specific wallet)
- Registration is properly formatted with valid IPFS URI
- Wallet appears to be a dedicated agent wallet rather than a personal wallet
Service Verification
- Website (zyf.ai): ✅ Live, renders as SPA
- MCP Server (mcp.zyf.ai): ✅ Live and healthy, version 1.0.0, Streamable HTTP protocol, 15 tools across 5 categories (Protocol, Opportunities Discovery, Analytics & Metrics, User Data, Earnings)
- Health endpoint: ✅ Returns healthy status with timestamp
- Documentation (docs.zyf.ai): ✅ Live, covers Smart Wallet Management (ERC-4337/7579), Multi-Chain Support, TypeScript SDK
- npm package (@zyfai/sdk): ⚠️ Could not verify (Cloudflare blocked)
GitHub & Source Code
- Organization: github.com/ondefy (branded as "Zyfai")
- ERC-8004 Implementation: Real repo with ZK circuits (Circom), Groth16 verifier, Solidity contracts, E2E tests
- MCP Server: Dedicated repo (zyfai-mcp-server)
- SDK: Public repo (zyfai-sdk)
- Paymaster repos: Multiple zkSync paymaster implementations showing deep expertise
- Star count: Low but consistent across repos (1-3 stars each)
Social & Web Presence
- Team has history in zkSync ecosystem (paymaster implementations)
- No direct X/Twitter or social media links found in registration metadata
- Documentation suggests active development
Scoring Breakdown
| Factor | Score | Max | Notes |
|---|---|---|---|
| Registration quality | 14 | 15 | Complete IPFS metadata, valid JSON, all fields populated |
| On-chain activity | 8 | 20 | Minimal wallet activity, but registration is proper |
| Social presence | 6 | 15 | GitHub presence strong, but no social media links |
| Service verification | 20 | 20 | MCP live, website live, docs live, health endpoint responsive |
| Reputation signals | 12 | 15 | Real team with zkSync track record |
| Red flag absence | 18 | 15 | No red flags found, bonus for technical depth |
| Total | 78 | 100 |
Red Flags
- None significant. Low wallet balance is neutral for an agent wallet.
Green Flags
- Real ZK circuit implementation (not just marketing)
- Live MCP server with proper health monitoring
- Multiple GitHub repos showing consistent development
- Team has zkSync paymaster expertise (real DeFi experience)
- Comprehensive documentation site
- Proper ERC-8004 registration with complete metadata
Conclusion
Zyfai Rebalancer Agent represents a legitimate DeFi project with real technical substance. The team has demonstrable expertise in ZK technology and blockchain paymasters. All claimed endpoints are live and functional. The only weakness is limited social media presence and low wallet activity, which is typical for newer agent registrations. This is a green-flag project with real engineering behind it.