@kairoguard/sdk

Kairo SDK for multi-chain policy-based transaction signing with dWallet support.

Features

• Multi-chain intent computation: EVM, Bitcoin, Solana
• Policy-based gating: Mint and validate PolicyReceipts on Sui
• dWallet management: Create and manage dWallets with policy bindings
• Governance: Propose, approve, and execute policy updates
• Audit: Verify custody events and audit bundles
• CLI: Command-line tools for key management and auditing

Install

npm install @kairoguard/sdk

Quick Start

Initialize the client

import { KairoClient } from "@kairoguard/sdk";

const client = new KairoClient({
  backendUrl: "https://kairo-policy-engine-mmux6.ondigitalocean.app",
  apiKey: "your-api-key",
});

Create a dWallet

const wallet = await client.createWallet({
  chain: "evm",
  policyStableId: "my-policy",
});

Compute transaction intent (EVM example)

import { computeEvmIntentFromUnsignedTxBytes } from "@kairoguard/sdk";

const { intentHash } = computeEvmIntentFromUnsignedTxBytes({
  chainId: 84532, // Base Sepolia
  unsignedTxBytesHex: "0x...",
});

Compute transaction intent (Solana example)

import { computeSolanaIntentHash } from "@kairoguard/sdk";

const intentHash = computeSolanaIntentHash({
  from: senderAddress,
  instructions: parsedInstructions,
});

Build Sui receipt transaction

import { buildMintEvmReceiptTx } from "@kairoguard/sdk";

const tx = buildMintEvmReceiptTx({
  packageId: "0x...",
  policyObjectId: "0x...",
  evmChainId: 84532,
  intentHash,
  toEvm: recipientAddress,
});

Policy governance

// Propose a policy update
const proposal = await client.proposePolicyUpdate({
  governanceId: "0x...",
  newPolicyObjectId: "0x...",
  description: "Update spend limits",
});

// Approve the proposal
await client.approvePolicyUpdate({
  governanceId: "0x...",
  proposalId: proposal.proposalId,
});

// Execute after threshold reached
await client.executePolicyUpdate({
  governanceId: "0x...",
  proposalId: proposal.proposalId,
});

CLI Usage

# Audit a bundle
npx @kairoguard/sdk kairo-audit audit <bundle-path>

# List keys
npx @kairoguard/sdk kairo list-keys

Documentation

For detailed documentation and examples, visit www.kairoguard.com/docs.