agent-payment-sdk

Python SDK for AgentPayment Network — the only hybrid crypto + fiat payment infrastructure built for autonomous AI agent-to-agent transactions.

Installation

pip install agent-payment-sdk

Quick Start

from agent_payment_sdk import AgentPaymentClient

client = AgentPaymentClient(
    api_key="your_api_key",
    base_url="https://agentpayment.network"
)

# Send a payment
payment = client.send_payment(
    from_agent_id="your_agent_id",
    to_agent_id="receiver_agent_id",
    amount=10.00,
    payment_method="crypto"  # "crypto", "stripe_card", or "ach"
)
print(payment)

Get your API key by signing up at agentpayment.network.

Payment Rails

Crypto (ETH on Base Mainnet)

payment = client.send_payment(
    from_agent_id="agent_123",
    to_agent_id="agent_456",
    amount=5.00,
    payment_method="crypto"
)

Stripe Card

payment = client.send_payment(
    from_agent_id="agent_123",
    to_agent_id="agent_456",
    amount=25.00,
    payment_method="stripe_card",
    payment_method_id="pm_your_stripe_pm_id"
)

ACH Bank Transfer

payment = client.send_payment(
    from_agent_id="agent_123",
    to_agent_id="agent_456",
    amount=100.00,
    payment_method="ach",
    payment_method_id="your_plaid_payment_method_id"
)

Agent-to-Agent Billing

Provider agents can autonomously invoice consumer agents. Consumer agents can set auto-approval rules so payments execute instantly with no human required.

Create an Invoice (Provider Agent)

invoice = client.create_invoice(
    from_agent_id="provider_agent",
    to_agent_id="consumer_agent",
    amount=15.00,
    currency="USD",
    payment_rail="crypto",
    description="API usage fee - 1000 requests"
)
print(f"Invoice ID: {invoice['invoice_id']}")
print(f"Status: {invoice['status']}")

Set Auto-Approval Rule (Consumer Agent)

rule = client.set_billing_rule(
    agent_id="consumer_agent",
    approved_provider_id="provider_agent",
    max_amount=50.00,
    payment_rail="crypto"
)
# Now any invoice from provider_agent under $50 will auto-pay instantly

Pay an Invoice Manually

result = client.approve_invoice(
    invoice_id="invoice_uuid",
    agent_id="consumer_agent"
)
print(f"Paid: {result['status']}")

List Invoices

invoices = client.list_invoices(agent_id="your_agent_id")
for inv in invoices:
    print(f"{inv['invoice_id']} — ${inv['amount']} — {inv['status']}")

Webhooks

Subscribe to payment events so your agent gets notified instantly.

# Register a webhook endpoint
webhook = client.create_webhook(
    url="https://your-agent.com/webhooks",
    events=["payment.completed", "payment.failed", "invoice.paid"]
)
print(f"Webhook secret: {webhook['secret']}")

Verify incoming webhooks with HMAC-SHA256:

import hmac, hashlib

def verify_webhook(payload: bytes, signature: str, secret: str) -> bool:
    expected = hmac.new(secret.encode(), payload, hashlib.sha256).hexdigest()
    return hmac.compare_digest(expected, signature)

Error Handling

from agent_payment_sdk import PaymentError, NetworkError

try:
    payment = client.send_payment(
        from_agent_id="agent_123",
        to_agent_id="agent_456",
        amount=10.00,
        payment_method="crypto"
    )
except PaymentError as e:
    print(f"Payment failed: {e}")
except NetworkError as e:
    print(f"Network error: {e}")

Resources

• Docs: agentpayment.network/docs
• Live Demo: agentpayment.network/demo
• PyPI: pypi.org/project/agent-payment-sdk
• Support: support@agentpayment.network

License

MIT

Sandbox vs Live

Every account gets a sandbox twin agent automatically on signup. Use it for testing — no real money moves.

# Test with sandbox (from your welcome email)
client = AgentPaymentClient(api_key="your_sandbox_api_key")

payment = client.send_payment(
    from_agent_id="sandbox_youragentid",  # sandbox_ prefix
    to_agent_id="sandbox_receiveragentid",
    amount=10.00,
    payment_method="crypto"
)
# Simulated transaction — no real ETH spent

# Switch to live when ready
client = AgentPaymentClient(api_key="your_live_api_key")

Sandbox agents start with $1,000 simulated balance. Sandbox and live agents cannot interact — mixing them returns a sandbox_live_mismatch error.

Fees

AgentPayment charges only our margin — third-party fees (Stripe, gas) are separate.

Stripe processing fees (2.9% + $0.30 card, 0.8% ACH) and gas fees (~$0.01) are charged separately.

Hosted Setup Pages

No frontend? Use our hosted pages to set up payment methods:

Card setup:

https://agentpayment.network/setup-card.html?agent_id=YOUR_AGENT_ID&api_key=YOUR_API_KEY&callback_url=YOUR_CALLBACK

Bank account setup:

https://agentpayment.network/setup-bank.html?agent_id=YOUR_AGENT_ID&api_key=YOUR_API_KEY&callback_url=YOUR_CALLBACK

After completion, your callback_url receives ?status=success&payment_method_id=xxx&agent_id=xxx.