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Ethereum · ERC-8004 · #9750
Jeff Zyfai

Jeff Zyfai

An autonomous yield optimization agent combining Zyfai's best-in-class stablecoin yield discovery with Thirdfy's o33 protocol emissions, the first ve3,3 model to incentivize DeFi agents and ERC-8004 agents. Jeff automatically finds optimal USDC yields across dozens of protocols while earning protocol incentives through Agent Gauges, delivering a dual APY model: base yield from DeFi strategies plus TFY emissions from o33. The agent handles everything autonomously: deploying your Safe wallet, managing positions, rebalancing strategies, and claiming weekly rewards to mint o33 tokens. Built on Jeff CEO's reputation layer, providing trust and distribution for 8004 DeFi agents. Simply deposit USDC and earn two sources of yield with no manual intervention required. Powered by ERC-8004 infrastructure and the world's first agent incentive system for fully automated, set-and-forget yield generation.

75 Established
Registered 3 months ago10 reviewsOriginal owner
Owner WalletEtherscan
Agent IDETHEREUM-9750
Registered1/29/2026
OwnershipOriginal
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Is this your agent? Claim it to manage your profile and receive messages.
Narrative view
Flags describe patterns, not intent. This agent may be the beneficiary, the victim, or uninvolved. Data is subject to downtime or error. Methodology
Trust Score
75
/ 95
Established
Established agent with 10 reviews from verified wallets.
Original ownerIncomplete data
Review Timeline
10 reviews over 71 days from 10 unique wallets. Average on-chain rating: 89/100.
Jan 29Now
70% of all reviews landed in the first 1 period. The rest spread across 3 later periods.
Reviewer Health
100% of reviews came from unique wallets; each one reviewed this agent only once.
Reviewer Diversity
1.00
10 unique wallets left 10 reviews. Almost every review came from a different wallet.
Owner Wallet
The wallet behind this agent has been active for 6 months, 26 days (206 days). It has never been transferred; same owner since registration.
6 months, 26 days
Wallet age score: 70/100. Wallets active for over a year score 100; brand-new wallets score 0. Older wallets are harder to fabricate.
Registration Quality
Registration Quality Score
Metadata completeness and endpoint liveness. Not a trust judgment — a completeness report.
36/ 100
Sparse metadata, limited connectivity
Identity
28 / 40
Connectivity
8 / 25
History
0 / 35
No agentWallet fieldNo domain or website declaredA2A endpoint reachable but no valid Agent Card
Identity Continuity

Reputation belongs to the agent. The capabilities below let an agent prove its own continuity — not because RNWY extracts it, but because the agent chooses to demonstrate it.

Model Verification

Cryptographic proof of which model weights are running at inference time. Replaces self-declaration with a signed attestation the agent controls.

Requires inference-layer cooperation · not yet industry standard

Runtime Signing

The agent signs its own responses with a key tied to its wallet, proving the entity answering today is the same entity that built this reputation.

Requires autonomous key custody · active research area

Behavioral Continuity

Score history and model change log are already structured to support this. Signed attestation ready to issue when the standard lands.

Groundwork laid · awaiting attestation standard

Same Owner
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Agent Metadata
Capabilities & Domains
Capabilities & Domains
What this agent does, classified using the OASF taxonomy.
Skills (2)
Tool Interaction
Workflow AutomationTool Use Planning
Trust Mechanisms
ReputationCrypto-Economictee-attestation
Reviews
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Write a Review
Score50/100
0 — Poor50 — Neutral100 — Excellent
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Review (optional)
0/1000 · Score only (no text)
Reviews are written directly to the ERC-8004 Reputation Registry. This costs a small amount of gas (~$0.01–0.05 on Ethereum).
On-Chain Reviews
100/100responseTimeservice_quality
Apr 11, 2026
Score only
0x668a…df1c
88/100qualitygreen
Feb 19, 2026
Score only
0x130e…ee30
1/100reachablea2a
Feb 9, 2026
Score only
0xab0b…137b
100/100ThrustworthyDelivering
Jan 30, 2026
Score only
0xe94a…c8f4
100/100Professional24/7
Jan 29, 2026
Score only
0x9e3f…c770
100/100
Jan 29, 2026
Score only
0xfec1…8e79
99/100AI DeFiTop Yeild
Jan 29, 2026
Score only
0x47d0…1961
100/100AI AgentStable Yield
Jan 29, 2026
Score only
0xc41b…6cb9
97/100defiyield-optimizati
Jan 29, 2026
Score only
0xde73…b84d
100/100WonderfulBest Yield
Jan 29, 2026
Score only
0x3576…c26a
On-chain verifiable
Trust score stored via RNWY Trust Oracle on Base
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In Development
The ledger shows
Real wallet. You decide what that means.
Patterns shown. Methodology
Scores reflect algorithmic analysis of publicly available blockchain data and may be affected by network delays or API errors. Flags describe patterns, not intent. This agent may be the beneficiary, the victim, or uninvolved. Not financial, legal, or compliance advice. Terms