Veridex Protocol

One passkey. Any chain. Fully self-custodial.

Veridex is a cross-chain passkey authentication protocol that lets users control assets on any blockchain with FaceID/TouchID — no seed phrases, no wallet apps, no chain switching. It also provides an Agent SDK for autonomous AI agent payments, on-chain identity (ERC-8004), and reputation-gated commerce.

Two Packages, One Protocol

Package	Purpose	Install
`@veridex/sdk`	Core SDK — passkey wallets, vaults, sessions, cross-chain transfers, ERC-8004 utilities	`npm install @veridex/sdk`
`@veridex/agentic-payments`	Agent SDK — autonomous payments, on-chain identity, reputation, trust gates, discovery, MCP tools	`npm install @veridex/agentic-payments`

Why Veridex?

Feature	Traditional Wallets	MPC/Custodial	Veridex
Login	Seed phrase	Social/email	FaceID only
Custody	Self-custody	Custodial	Fully self-custodial
Cross-chain	Manual bridging	Limited	Native multi-chain
Recovery	Seed phrase	Via provider	On-chain social recovery
AI Agents	Not supported	Custodial keys	Session keys + spending limits
Agent Identity	None	None	ERC-8004 on-chain identity + reputation

Quick Links

Quick Start

Integrate Veridex in 5 minutes

SDK Reference

Core SDK API documentation

Agent SDK Reference

Agent SDK for autonomous payments

Agent Identity

ERC-8004 identity, reputation, and discovery

Supported Chains

Chain	Type	Status
Base	Hub (EVM)	✅ Live
Optimism	Spoke (EVM)	✅ Live
Arbitrum	Spoke (EVM)	✅ Live
Solana	Spoke	✅ Live
Aptos	Spoke	✅ Live
Sui	Spoke	✅ Live
Starknet	Spoke	✅ Live
Stacks	Spoke	✅ Live
Monad	Spoke (EVM)	✅ Live

How It Works

Users get the same deterministic vault address across all EVM chains, derived from their passkey.

Core SDK — Quick Example

import { createSDK } from '@veridex/sdk';
 
// Initialize with testnet (default)
const sdk = createSDK('base', {
  network: 'testnet',
  relayerUrl: 'https://relayer.veridex.network',
});
 
// Register a passkey (prompts biometric)
const credential = await sdk.passkey.register('alice', 'My Wallet');
 
// Get your deterministic vault address (same on all EVM chains)
const vaultAddress = sdk.getVaultAddress();
console.log('Vault:', vaultAddress);
 
// Check spending limits
const limits = await sdk.getSpendingLimits();
console.log('Daily remaining:', limits.dailyRemaining);
 
// Prepare and execute a transfer
const prepared = await sdk.prepareTransfer({
  targetChain: 10004,  // Base Sepolia
  token: '0x036CbD53842c5426634e7929541eC2318f3dCF7e', // USDC
  recipient: '0x742d35Cc6634C0532925a3b844Bc9e7595f5A234',
  amount: 1000000n,    // 1 USDC
});
 
// Get human-readable summary before signing
const summary = await sdk.getTransactionSummary(prepared);
console.log(summary.title, summary.description);

Agent SDK — Quick Example

import { createAgentWallet } from '@veridex/agentic-payments';
 
// Create an autonomous agent wallet with on-chain identity
const agent = await createAgentWallet({
  masterCredential: {
    credentialId: 'passkey-credential-id',
    publicKeyX: 0n,
    publicKeyY: 0n,
    keyHash: '0x...',
  },
  session: {
    dailyLimitUSD: 50,
    perTransactionLimitUSD: 10,
    expiryHours: 24,
    allowedChains: [10004], // Base Sepolia
  },
  erc8004: {
    enabled: true,
    testnet: true,
    minReputationScore: 30, // only pay merchants with 30+ reputation
  },
});
 
// Register on-chain identity (ERC-721 NFT)
const { agentId } = await agent.register({
  name: 'My Data Agent',
  description: 'Autonomous data analyst',
  services: [{ name: 'analysis', endpoint: 'https://my-agent.com/api' }],
});
 
// Fetch with auto-payment + reputation check + auto-feedback
const response = await agent.fetch('https://paid-api.example.com/data');
const data = await response.json();
 
// Discover other agents by capability
const agents = await agent.discover({ category: 'sentiment' });
 
// Check a merchant's reputation before subscribing
const trust = await agent.checkMerchantTrust('https://data-provider.com');
console.log(`Reputation: ${trust.score}/100`);