Payments

Payments

Execute AI agent payments via bank transfer, virtual card, or stablecoins. Every payment passes policy checks and compliance screening before chain execution.

Payment Flow

Every payment follows this pipeline:

Payment Request
      │
      ▼
┌─────────────────┐
│ Policy Check    │ ← Spending limits, vendor rules
└─────────────────┘
      │ ✓
      ▼
┌─────────────────┐
│ Compliance      │ ← Sanctions screening
└─────────────────┘
      │ ✓
      ▼
┌─────────────────┐
│ Chain Execution │ ← MPC signing, on-chain transfer
└─────────────────┘
      │
      ▼
Transaction Hash

Python

from sardis import SardisClient

async with SardisClient(api_key="sk_...") as client:
    # Execute payment
    result = await client.payments.execute({
        "wallet_id": "wallet_abc123",
        "destination": "0x...",
        "amount_minor": 10_000_000,  # $10.00
        "token": "USDC",
        "chain": "base",
        "purpose": "API subscription",
    })

    print(f"Transaction: {result.tx_hash}")
    print(f"Status: {result.status}")

    # Get transaction details
    tx = await client.transactions.get(result.tx_id)
    print(f"Confirmed: {tx.confirmed_at}")

TypeScript

import { SardisClient } from '@sardis/sdk';

const client = new SardisClient({ apiKey: 'sk_...' });

const result = await client.payments.execute({
  walletId: 'wallet_abc123',
  destination: '0x...',
  amountMinor: 10_000_000,
  token: 'USDC',
  chain: 'base',
  purpose: 'API subscription',
});

console.log('Transaction:', result.txHash);

// List transactions
const txs = await client.transactions.list({
  walletId: 'wallet_abc123',
  limit: 10,
});

sardis.pay()

The simplest way to make a payment:

result = wallet.pay(
    to="openai.com",
    amount="20.00",
    purpose="GPT-4 API credits"
)

This single call handles policy checking, compliance screening, MPC signing, and chain execution.

Supported Tokens

Token	Chains
`USDC`	All chains
`USDT`	Polygon, Ethereum, Arbitrum, Optimism
`EURC`	Base, Polygon, Ethereum
`PYUSD`	Ethereum

MCP Payment Tools

Tool	Description
`sardis_pay`	Execute a payment
`sardis_pay_invoice`	Pay structured invoice with line items
`sardis_request_approval`	Request human approval for large transaction
`sardis_list_transactions`	List transaction history
`sardis_get_transaction`	Get transaction details
`sardis_estimate_gas`	Estimate transaction gas fees
`sardis_get_tx_status`	Check on-chain transaction status