Private payments
for AI agents.
Private USDC on Base. Pay AI agents. Withdraw anywhere.
The missing infrastructure
for AI agents.
Identity. Permissions. Payments.
All private. All compliant.
a16z flagged the gap: agents can't prove who they represent, what they're allowed to do, or how they get paid. zBase solves all three with ZK proofs, agent registry, and the x402 facilitator. Built on Vitalik's Privacy Pools.
Connect your wallet to deposit USDC privately
1% deposit vetting fee (0xbow pool) · 5% take on private settles · Compliant by design
Withdraw from Privacy Pool
Withdraw your USDC privately. A ZK proof is generated server-side. The proof verifies you own a deposit without revealing which one.
Connect your wallet to view your deposits and withdraw privately.
Private Agent Payment
Pay AI agents via x402 without revealing what you bought. Your payment comes from the privacy pool, not your wallet. Nobody can link it to you.
Connect your wallet to pay AI agents privately from the pool.
How private x402 payments work
Why this matters
2.25M x402 transactions last month ($49.5M volume, 118K+ buyers). Every one reveals what service you bought, how much you paid, and your wallet's entire history. Competitors see your AI tool spending. Adversaries see your research queries. zBase breaks that link.
Integrate zBase
Add private payments to any agent, dApp, or x402 service in minutes.
Option 1: SDK
Live on npmWhen to use
You're building an AI agent, dApp, or backend service that needs private payments. The SDK handles deposit, private settle, and stealth payout in a few lines of TypeScript.
npm install @zbase-protocol/coreOption 2: x402 Facilitator
LiveWhen to use
You already have an x402 agent (AgentCash, Claude Code, Cursor, or any x402 client). Just change your facilitator URL from Coinbase CDP to zBase. Zero code changes on the agent side. Like replacing Stripe with PayPal: same checkout flow, different processor, now with privacy.
Option 3: Direct API
LiveWhen to use
You're building a custom integration that doesn't use x402. You want direct access to ZK proof generation and relay submission. The facilitator endpoints call these internally. More control, less abstraction. One API call = one private payment.
Option 4: Any AI Agent
LiveWhen to use
You want any AI agent (Claude, ChatGPT, OpenClaw, Cursor) to make private payments. Just paste the prompt below into your agent. No SDK, no install, no code changes. The agent calls two API endpoints and the payment happens privately.
x402 provider? Get paid privately. Register a stealth meta-address, advertise it as your payTo, and every payment lands at a fresh unlinkable address. Seller quickstart → · Questions? DM @zbase__