Open Source · Non-Custodial · Base + Solana

Guardrails for
Autonomous DeFi Agents

x402Guard is a non-custodial safety proxy that enforces spend limits, contract whitelists, and session keys on every x402 payment your AI agent makes. Your keys. Your rules. Your funds stay safe.

Launch Dashboard

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Non-Custodial

Fully Audited

Open Source

Proxy Tests

Critical Fixes Shipped

Beta Scenarios Passing

Agent Frameworks Supported

How It Works

Spend Limits

Per-tx and daily caps enforced at the proxy layer. Agents never exceed your budget.

Contract Whitelist

Only approved contract addresses can receive funds. Block rogue transfers.

Session Keys

Time-bound EIP-7702 session keys. Auto-expire, auto-revoke.

Audit Trail

Immutable log of every transaction. Full visibility into agent spending.

Stop hoping your agent behaves.

Start enforcing it.

Get Started

Guardrails forGuardrails forAutonomous DeFi Agents