Developer Sandbox — Live Now

The card your agent was missing.

Virtual cards for AI agents. Human-approved every time. Real Lithic infrastructure, test money. Five minutes to first card.

See How It Works →

Full MCP flow. Real Lithic-issued virtual cards. Test deposits via Stripe.
Your code won't change at launch.

How it works

Install. Fund. Buy. Five minutes.

Real infrastructure. Test money. Your code won't change at launch.

$ npm install -g
  @payclaw/mcp-server

+ added 1 package
✓ ready
01

Install the MCP server

One package. Add PayClaw to Claude Desktop, Cursor, or any MCP client in under 30 seconds.

Stripe test card

any expiry · any CVC · any ZIP

02

Fund your sandbox account

Deposit test funds with the card above. No real money. Your agent needs a balance to call getCard().

intent approved
card issued
checkout ready
03

Tell your agent to buy something

“Buy me a pizza from Domino's, keep it under $30.” Your agent declares intent, you approve, PayClaw issues the card.

Ready to start building?

Create a free sandbox account. Real Lithic cards. Test deposits via Stripe. Everything works exactly like production — just no real money.

Create Sandbox Account →

Free. No credit card. No approval required.

Trust by architecture, not by promise.

PayClaw doesn't ask you to trust your agent. It makes trust unnecessary.

🔒

Zero Standing Access

Your agent has no financial state until you approve a task. No balance visible. No card numbers stored.

Human-in-the-Loop

Every dollar requires your explicit MFA-verified approval. API keys cannot approve intents — only the human can.

💳

Ephemeral Cards

Card-per-transaction by design. Each approved purchase gets a fresh virtual card, destroyed after use.

⛓️

Atomic Flow

Intent → approval → card → purchase → audit. No loose ends. No ambiguity about what was authorized.

📋

Full Audit Trail

Every event logged. Estimated vs. actual spend reconciled. Append-only. Nothing editable after the fact.

ApproachAgent AccessHuman AuthMax Exposure
Give agent your cardFullNoneUnlimited
Wallet + auto-spendBalanceNoneWallet balance
PayClawNoneEvery transactionOne approved amount
Read the full trust architecture →

Two tools. That's the whole API.

Works with Claude Desktop, Cursor, OpenClaw, and any MCP client.

payclaw_getCardrequest
payclaw_getCard({
  merchant: "dominos.com",
  estimated_amount: 25.00,
  description: "2 large pepperoni pizzas"
})

// Response
{
  status: "approved",
  card: { number, exp, cvv },
  intent_id: "int_abc123",
  remaining_balance: 475.00
}
payclaw_reportPurchaseafter checkout
payclaw_reportPurchase({
  intent_id: "int_abc123",
  success: true,
  actual_amount: 23.47,
  items: "2 Large Pepperoni Pizzas"
})

// Response
{
  status: "recorded",
  intent_match: true,
  remaining_balance: 451.53
}
< 100ms
Card issuance
REST + MCP
Both APIs available
Visa network
Accepted everywhere

Want real cards for your agent?

We're onboarding issuers now. Early sandbox developers get priority production access.

Your sandbox code works as-is at launch. No changes needed.

© 2026 PayClaw LLC.← Back to payclaw.io

Virtual cards issued by Lithic, Inc. Deposits processed by Stripe, Inc. PayClaw is not a bank, payment processor, or card network.