Investigation Report: Zyfai Rebalancer Agent (8453:2100)
Summary
Verdict: 🟡 Yellow (64/100)
Zyfai Rebalancer Agent is a wallet-specific DeFi agent registration by the Ondefy/Zyfai team on Base. The underlying project is legitimate with real ZK technology, a functioning MCP server, open-source code, and professional documentation. However, this specific agent registration has minimal on-chain activity (owner wallet with 1 transaction and zero balance), and appears to be one of many per-wallet agent instances rather than a unique service.
Registration Data
- Name: Zyfai Rebalancer Agent for 0xa4bd...1538
- Chain: Base (8453), Token ID: 2100
- Owner: 0xa4bd1fB9C81c929c9D6Ad120569eF383F4a71538
- URI: IPFS-hosted, valid JSON with complete metadata
- Status: Active
- Technology: Circom 2.2.2+ ZK circuits, Groth16 proofs via SnarkJS
- Supported Chains: Base, Arbitrum, Plasma
On-Chain Analysis
- Owner wallet has 1 transaction and 0 ETH balance on Base
- No agent wallet configured (call reverted)
- Minimal on-chain footprint for the owner address
- 1 existing ERC-8004 feedback entry
Service Verification
- Website (zyf.ai): ✅ Live, loads correctly
- MCP Server (mcp.zyf.ai): ✅ Live, returns JSON with 15 DeFi tools across 5 categories (Protocol, Opportunities, Analytics, User Data, Earnings). Streamable HTTP transport.
- Documentation (docs.zyf.ai): ✅ Live, covers SDK, smart wallets, multi-chain support
- GitHub (ondefy): ✅ Active org with multiple repos — paymaster, MCP server, SDK, ERC-8004 implementation with real ZK circuits
- NPM (@zyfai/sdk): Referenced but blocked by Cloudflare (unable to verify directly)
Social & Web Presence
- GitHub org "ondefy" has history in zkSync paymaster infrastructure (3 stars, real project)
- MCP server repo and SDK are open source
- No direct X/Twitter profile found for this specific agent
- Project appears to have evolved from Zyfi (zkSync paymaster) to Zyfai (DeFi agent platform)
Scoring Breakdown
| Factor | Score | Notes |
|---|---|---|
| Registration quality | 12/15 | Complete metadata, valid IPFS, endpoints listed |
| On-chain activity | 8/20 | Only 1 tx, zero balance, no agent wallet |
| Social presence | 8/15 | GitHub org active, no dedicated social accounts |
| Service verification | 18/20 | MCP, website, docs all live and functional |
| Reputation signals | 5/15 | 1 prior feedback, limited community trust data |
| Red flag absence | 13/15 | Clean — no scams, real code, legitimate team |
| Total | 64/100 |
Key Findings
Green Flags:
- Real ZK cryptography implementation (not vaporware)
- Functioning MCP server with actual DeFi tooling
- Open-source codebase on GitHub
- Professional documentation
- Legitimate team with prior zkSync infrastructure work
Concerns:
- Wallet-specific agent name suggests batch registration pattern
- Owner wallet is essentially empty with minimal activity
- No agent wallet configured
- Limited community/social presence for this specific registration
Verdict
The Zyfai project behind this agent is genuine and technically competent. However, this particular registration (one of potentially many wallet-specific instances) has minimal on-chain presence. Users should verify they're interacting with the official Zyfai services rather than relying solely on this registration. Yellow — proceed with awareness.