Skip to main content

​
PolicyKit

PolicyKit is a decentralized policies-as-code SDK that enables composable, enforceable policies for smart account transactions. It supports both on-chain and off-chain evaluation, giving developers a powerful framework to define and enforce transaction rules.

​
Why PolicyKit?

Smart accounts and AI agents need guardrails. Whether you’re building a DeFi application, a DAO treasury, or an AI-powered wallet, you need a way to enforce rules on transactions before they execute. PolicyKit provides:

Policies as Code

Define policies programmatically using a fluent TypeScript API. Version control, test, and deploy policies like any other code.

Three-Tier Evaluation

On-chain stateless rules, on-chain stateful rules, and off-chain rules via Lit Protocol for maximum flexibility.

Non-Custodial

Account owners maintain full control. Policies are enforced without requiring custody of private keys.

ERC-7579 Compatible

Integrates seamlessly with the smart account module standard for broad wallet compatibility.

​
How It Works

  1. Define policies using the PolicyBuilder fluent API
  2. Store policies on IPFS for decentralized, tamper-proof storage
  3. Deploy on-chain rules to the PolicyEngine smart contract
  4. Evaluate transactions against your policy — on-chain and off-chain
  5. Enforce rules automatically before transactions execute

​
Quick Example

import { PolicyBuilder } from "@policykit/sdk";
import { parseEther } from "viem";

const policy = new PolicyBuilder("my-treasury-policy")
  .allowTargets(["0xUniswapRouter", "0xAavePool"])
  .maxValue(parseEther("10"))
  .spendLimit("0xUSDC", parseEther("50000"), 86400) // 50k USDC per day
  .cooldown(300) // 5 min between transactions
  .maxSlippageBps(50) // 0.5% max slippage
  .requireSimulation(true)
  .setFailMode("closed")
  .build();

​
Packages

PackageDescription
@policykit/sdkCore TypeScript SDK with PolicyBuilder, clients, and utilities
@policykit/cliCommand-line tool for policy management
@policykit/contractsSolidity smart contracts for on-chain enforcement
@policykit/lit-actionsLit Protocol actions for off-chain evaluation

​
Get Started

Overview

Learn about PolicyKit’s architecture and concepts.

Quickstart

Build and deploy your first policy in minutes.