Settlement Relayer

The Settlement Relayer (SR) serves as YODL’s coordination layer between Operators and on-chain infrastructure. It standardizes RFQs, enforces protocol policy, and issues the witnessed Permit2 signature bundle (sigBlob) that each Operator’s Orchestrator verifies through isValidSignature.

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What YODL Manages

• RFQ Construction & Policy: Builds quotes and enforces fee bands, taker whitelists, exposure limits, cooldowns, and rate caps.

• Witnessed Signing: Generates the Permit2 + RFQ witness package used by orderflow venues and verified by the Operator’s Orchestrator.

• Sequencing & Capacity Control: Queues or rejects RFQs when allocation or cooldown thresholds are hit, ensuring no reuse of allocated vault liquidity.

• Finalize & Repay Coordination: Tracks fills, manages finalize windows, and pauses execution if vault solvency or policy checks fail.

• Aggregator Integration: Hosts /rfq and /order endpoints — Operators interact via authenticated APIs, with no manual setup required.

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What Operators Manage

• Binary Connectivity: Configure and maintain the Operator Binary’s connection to the Settlement Relayer’s authenticated API endpoint.

• Quote Transmission: Sign and relay accounting transactions and quotes to the SR within the specified latency window (≤ 500 ms).

• Transaction Lifecycle: Trigger accounting → finalization → repayment flows through the SR to ensure vaults are restored on schedule.

• System Uptime: Maintain 99.5%+ runtime for the Operator Binary; downtime impacts Operator Reputation and may trigger Operator slashing.