Nava — Verification Infrastructure for AI Agent Transactions

Autonomous AI agents are increasingly executing DeFi strategies — swapping tokens, managing lending positions, and composing multi-step on-chain actions. But there is no verification layer between what an agent is told to do and what it actually executes. An agent instructed to “swap 100 USDC for ETH at 2% slippage” may route through an unverified contract, accept excessive slippage, or interact with a sanctioned address — with no mechanism to catch the error before funds move irreversibly.

Nava is a middleware layer that sits between agent intent and on-chain execution. Every transaction proposed by an agent is intercepted and verified before any funds are released.

How it works

At the center of Nava is the Execution Escrow — an MPC wallet that holds user funds and enforces a simple rule: no transaction executes until verification passes. Agents submit a proposal (transaction calldata + natural-language intent) to escrow via the Nava SDK or MCP Server. Funds remain locked until the Arbiter returns an approval.

The Arbiter is Nava’s hybrid verification engine. It runs deterministic checks first — OFAC screening, balance sufficiency, spending limits, gas validation — and rejects immediately on any failure. For transactions that pass, it invokes Graph-of-Thought (GoT) LLM reasoning to evaluate intent-execution alignment, detect adversarial manipulation, and validate jurisdiction compliance. Every verdict is fully explainable and recorded as an immutable audit trail on NavaChain, Nava’s dedicated EVM-compatible settlement layer.

Integration

Developers integrate via the TypeScript SDK or MCP Server — no need to deploy contracts or run verification infrastructure. The flow is:

`Agent → Nava SDK/MCP Server → NavaChain + Arbiter → Verified Execution`

Nava is designed to make autonomous on-chain execution reliable and institution-ready.