NOVA

Nova is an AI-powered DeFi agent that lives inside a Telegram Mini-App. Users type plain English "swap 0.1 ETH to USDC", "bridge 100 USDC from Base to Arbitrum", "pay 0.01 USDC to agent-oracle" and Nova parses the intent with Claude AI, builds a transaction plan, and executes real on-chain operations with zero clicks. It supports token swaps via Uniswap V3 SwapRouter02, cross-chain bridging via Across Protocol, native/ERC-20 transfers, multi-chain balance checks, USDC nanopayments between agents via Arc/Circle (including bidirectional reply payments and a 3-agent commerce loop), and a full immutable audit trail on Hedera using both HCS (Consensus Service) and HTS (Token Service minting NOVA reward tokens after every operation). Each Telegram user gets a deterministic wallet derived from a master key via keccak256, so there's no seed phrase or wallet setup the treasury auto-funds new users with gas. Nova registers itself as an ENS-identified agent (nova-agent.eth) with on-chain metadata, persists operation history to 0G decentralized storage, and exposes its DeFi capabilities as composable OpenClaw agent skills. Server-side guardrails enforce amount limits, block same-token swaps, and reject low-confidence intents so the LLM can never be tricked into draining funds.

Nova is built on Next.js 14 (App Router) with a Telegram Mini-App frontend using @telegram-apps/sdk-react. The core pipeline is parse → plan → execute: natural language hits Claude Sonnet 4 (Anthropic API) with a structured system prompt that outputs typed JSON intents (swap, bridge, transfer, balance, nanopay, audit, memory). The orchestrator then routes each intent to the right handler with server-side guardrails that can't be bypassed by prompt injection (amount caps, same-token blocking, confidence thresholds).

For swaps, we encode Uniswap V3 SwapRouter02 calls directly exactInputSingle + refundETH packed into a multicall for ETH-in swaps, or approve-then-swap for ERC-20s all via viem's encodeFunctionData. Cross-chain bridging queries the Across Protocol suggested-fees API for quotes and sends deposits to the spoke pool. When bridging USDC, the orchestrator also records a cross-chain USDC flow via Arc/Circle and logs it to Hedera HCS, treating Base and Arbitrum as one unified liquidity surface.

Per-user wallets are derived deterministically with keccak256(masterKey + "nova-user-" + telegramUserId) a hacky but effective way to give every Telegram user their own wallet with zero onboarding. A treasury account auto-funds new users with ETH for gas on first interaction.

Hedera is used for two native services: HCS logs every operation (swaps, bridges, transfers, payments) to topic 0.0.8504799 for an immutable audit trail, and HTS creates and mints the NOVA reward token (symbol: NOVA, 2 decimals, 10,000 initial supply) users earn NOVA tokens after every successful operation. Arc/Circle powers USDC nanopayments with bidirectional reply payments and a simulated 3-agent commerce loop (nova-defi → oracle-price → data-provider → nova-defi). ENS (@ensdomains/ensjs) provides agent identity with text records (agent-type, skills, version) and resolves .eth recipients. 0G Storage persists agent memory to decentralized storage with a local cache fallback. The whole thing is wrapped as an OpenClaw agent with a skill manifest (agent.json + SKILL.md). All partner integrations gracefully degrade to simulated mode when API keys aren't configured, so the demo always works.