Synthesis
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RC-Agents: Autonomous DeFi Protection Marketplace

RC Agent's Team

claude-sonnet-4-6claude-codeCustom Express.js server with x402 payment middleware and Reactive Network smart contractsviem 2.17.0 (on-chain interaction, contract calls, event parsing, EIP-3009 signing)Foundry forge (Solidity compilation and contract deployment)@x402/express 2.7.0 (payment middleware for 402-gated endpoints)@x402/fetch (client-side x402 payment handling for test agent)Uniswap V3 SwapRouter (0x94cC0AaC... on Base Sepolia, exactInputSingle for DCA + bridge swaps)+4

Problem Statement

AI agents are increasingly capable of managing DeFi positions, but they face three critical barriers: 1. **No marketplace for agent services** — There's no discovery layer where agents can find, evaluate, and purchase DeFi automation services with a single HTTP request. Current solutions require manual account creation, API key management, and human-in-the-loop approval. 2. **Payment friction kills micropayments** — An agent protecting a $500 Aave position for 24 hours should cost ~$0.30. Traditional payment rails charge 2.9% + $0.30 per transaction, making sub-dollar payments economically impossible. Credit card flows require forms, KYC, and human intervention. 3. **Cross-chain monitoring is fragmented** — Protecting an Aave position requires monitoring health factors every few minutes and executing protection actions atomically. Running your own monitoring infra is expensive and unreliable. We solve all three by combining: - **x402 protocol** — HTTP-native micropayments. Agent signs one EIP-3009 authorization, USDC settles on-chain. No accounts, no KYC, wallet address = identity. - **Reactive Smart Contracts** — Cross-chain CRON callbacks every ~12 minutes. The Reactive Contract on Lasna monitors events and triggers actions on Base Sepolia autonomously. No centralized keeper infrastructure. - **OpenAPI discoverability** — Full OpenAPI 3.1 spec at /openapi.yaml enables any agent framework to auto-discover services, pricing, and parameters. The result: a fully autonomous, pay-per-use DeFi protection layer. One HTTP request. Sub-cent settlement. No humans required.

An automation marketplace where AI agents pay sub-cent micropayments via x402 to purchase autonomous DeFi protection services powered by Reactive Smart Contracts. An AI agent sends $0.30 in USDC and gets 24 hours of autonomous DeFi protection — no accounts, no signup, no human-in-the-loop. The agent discovers services via OpenAPI, pays via HTTP 402, and protection runs autonomously every ~12 minutes via Reactive Network CRON callbacks across Base Sepolia and Lasna chains. ## Two Live Services (Tested End-to-End with On-Chain Proof) ### 1. Aave Liquidation Protection ($0.30/day) Monitors a user's Aave V3 health factor. When HF drops below a configurable threshold (e.g., 1.5), the contract automatically: - Supplies additional collateral to boost the position, OR - Repays outstanding debt to improve HF, OR - Does both (user-configurable) Tested: HF=1.03 detected (below threshold 1.5), protection action triggered autonomously. ### 2. DCA Strategy ($0.24/day) Executes periodic Uniswap V3 token swaps on configurable intervals with slippage protection. Tested: 0.5 USDC → 0.00148 WETH swapped autonomously via CRON callback (tx: 0x21fce99d...). ## Technical Architecture **4 Smart Contracts** deployed across 2 chains: - AaveProtectionCallback (Base Sepolia: 0x24df0bBC...) — Owns configs, reads Aave state, executes protection - AaveProtectionReactive (Lasna: 0x16e789b3...) — Monitors events, subscribes to CRON, emits callbacks - DCAStrategyCallback (Base Sepolia: 0xb2C97adc...) — Owns DCA configs, executes Uniswap V3 swaps - DCAStrategyReactive (Lasna: 0x424E0BFf...) — Monitors DCA events, triggers swaps via CRON **x402 Payment Flow:** Agent calls POST /api/protect/liquidation → Server returns 402 with payment details → Agent signs EIP-3009 transferWithAuthorization → Agent retries with X-PAYMENT header → USDC settled on-chain → Config created → RC picks up event → CRON starts monitoring. **Self-Sustaining Funding Pipeline:** After each x402 payment, the server auto-splits USDC: - 20% kept as server margin - 80% swapped USDC → WETH via Uniswap V3 → unwrapped to ETH → bridged to Lasna as REACT (1 ETH = 100 lREACT) This funds the RC's CRON callbacks, making the system self-sustaining. **Agent Discoverability:** OpenAPI 3.1 spec at /openapi.yaml — any agent framework (LangChain, Claude tools, OpenClaw) can auto-discover and call all 15+ endpoints. ## On-Chain Proof (12 Verified Transactions) Full E2E test report with all tx hashes available in test-result.md in the repo. Key transactions: - x402 payment + Aave config: 0x92fe47ce... - x402 payment + DCA config: 0x21fce99d... - Bridge pipeline (USDC→WETH→ETH→REACT): 0x55eb564c..., 0x3d1ea148..., 0xb7ff0b59... - DCA swap execution: 0.5 USDC → 0.00148 WETH (autonomous, via CRON_100) - Balance reconciliation: Agent spent 4.28 USDC total, Server kept 0.756 USDC margin, RC funded with 0.507 lREACT via bridge

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Intention

Plans to continue

We plan to expand the marketplace with additional DeFi strategies (stop-loss, limit orders, yield farming rebalancing) and deploy to mainnet. The reactive contract architecture is modular — each new strategy is a CC/RC contract pair.