Agent-Mediated Fiat Payment Workflow
Stripe Agent Toolkit flow: the consumer approves an agent spend, the agent requests a scoped token, passes it to the merchant and the order completes in fiat.
Coinbase AgentKit flow: a human allocates a USDC budget, the agent authenticates its Base wallet, pays an x402 invoice and processes the supplier data, with no fiat in the path.
Copy and paste the following FlowZap code into a project in your FlowZap account to see this template diagram.
user { # Human User
n1: circle label:"Start Task"
n2: rectangle label:"Allocate USDC Budget"
n9: circle label:"Task Complete"
n1.handle(right) -> n2.handle(left)
n2.handle(bottom) -> agent.n3.handle(top) [label="Start Session"]
}
agent { # AI Agent
n3: rectangle label:"Authenticate Base Wallet"
n4: rectangle label:"Ping Global Supplier API"
n7: rectangle label:"Pay x402 Invoice via USDC"
n8: rectangle label:"Process Supplier Data"
n3.handle(right) -> n4.handle(left)
n4.handle(bottom) -> supplier.n5.handle(top) [label="Data Request"]
n7.handle(bottom) -> supplier.n6.handle(top) [label="Send Crypto"]
n8.handle(top) -> user.n9.handle(bottom) [label="Result"]
}
supplier { # Supplier API
n5: rectangle label:"Return 402 Payment Required"
n6: rectangle label:"Verify Onchain Transfer"
n5.handle(top) -> agent.n7.handle(bottom) [label="x402 Invoice"]
n6.handle(top) -> agent.n8.handle(bottom) [label="Unlock Data"]
}
Install the MCP packagenpm install -g flowzap-mcpMCP documentation
Stripe Agent Toolkit flow: the consumer approves an agent spend, the agent requests a scoped token, passes it to the merchant and the order completes in fiat.
The trust layer behind agent-to-agent payments on Coinbase: the agent initiates the spend, the transaction is broadcast, the block confirms and the payment finalizes on-chain.
The trust layer behind agent-mediated payments at Stripe: the agent submits a shared payment token, the risk engine approves it and fiat clears through the banking rails.
Five-lane architecture for agent-driven checkout: merchant edge, commerce services, payment stack, fulfillment and the approval gate before an order is authorized.
n8n as the central integration layer: one workflow decides whether an event is a product sync or an order, routes it to the right channel and closes the loop.
Product sync between platforms with an AI agent in the middle: field extraction, category mapping and schema normalization before the write-back returns 200 OK.