Yield Engine

Verification

Multi-stage verification gate for DeFi positions: automated filters (10%+ APY, $1M+ TVL), 523+ exploit database cross-reference, contract verification, APY consistency checks, and exact-amount approvals.

Position lifecycle Default filters Risk checks Exploit database

SDK adapters discover raw positions. Before any position reaches your board, it passes through this multi-stage verification gate.

Position lifecycle

Positions enter as PROVISIONAL and graduate to LOCKED only after passing evidence review. No shortcut path.

Positions are never auto-blocked. The system always asks the user before changing status to BLOCKED. Only hacks, scams, or missing contracts trigger a BLOCK recommendation.

Default filters

Non-negotiable filters applied to every scan:

Filter	Threshold	Rationale
Minimum APY	>10%	Below this, gas costs and risk don't justify the position
Minimum TVL	>$1M	Low TVL = low liquidity = high slippage risk
Asset types	Stables & delta-neutral only	No directional bets unless explicitly requested
Board check	Required	Position must not duplicate existing board entries

Risk verification

Each position goes through these automated checks:

Contract verification

Checks Etherscan for verified source code and confirms ABI matches the expected interface.

Exploit history

Cross-references each position against 523+ historical DeFi exploits with loss amounts.

TVL stability

No sudden drops indicating a run on the protocol.

APY consistency

Flagged if >3σ deviation from historical baseline.

Approval scope

Only exact-amount approvals. Never infinite uint256.max.

Gas estimation

Real eth_gasPrice query from archive RPC. Never guessed.

Exploit database

523+ documented DeFi hacks with protocol, chain, attack vector, and loss amount. Every position is cross-referenced before reaching your board. The Risk Engine uses this as one of six scoring dimensions.

Protocol	Date	Loss	Vector	Resolved?
Euler Finance	Mar 2023	$197M	Donation attack on eToken collateral	Yes — funds returned, contracts redeployed
Curve Finance	Jul 2023	$73.5M	Vyper compiler reentrancy bug (v0.2.15–0.3.0)	Partial — ~73% recovered via white-hat
Mango Markets	Oct 2022	$114M	Oracle price manipulation via thin liquidity	No — attacker convicted, protocol wound down

Unresolved exploit in last 12 months → FLAG. No post-mortem → BLOCK.

Leverage is market risk, not a security issue. Leveraged positions are never auto-blocked — the system shows the APY split (base + reward) and lets the user decide.

Verified positions are ready for execution. The Calldata Pipeline takes them from intent to broadcast-ready transaction.