Safe DeFi for AI Agents | OnlyFence

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OnlyFence is a high-performance, open-source CLI guardrail layer designed to protect autonomous AI agents and the users who deploy them. As agents move from simply chatting to executing on-chain transactions, they become increasingly vulnerable to hallucinations, prompt injections, and unintended trades that can result in catastrophic losses.OnlyFence acts as the "Technical Guardian" sitting natively between your AI agent and the blockchain. It provides a composable policy pipeline that runs 100% locally, requiring zero infrastructure, no accounts, and no tracking. Developers can set granular, machine-readable rules - such as token allowlists, USD spending limits, and 24-hour volume caps - which are evaluated in milliseconds before any transaction is ever signed.Key Features:* Local-First Safety: Your security policies and private keys never leave your machine; all evaluation happens entirely on the edge.* Agent-Native Design: Built for direct integration into AI prompt sequences (Claude, Cursor, etc.) with machine-readable JSON outputs.* Zero Infrastructure: No complex backends or hosted services - just `npm install` and go.* Powered by 7K: Seamlessly leverages the 7K Aggregator for the best swap routing across the Sui ecosystem while maintaining strict security guardrails.Whether you are building autonomous trading bots or programmatic safety nets for DeFi, OnlyFence provides the "missing brakes" needed for a secure agentic future.