Why this category exists
Traditional payment stacks assume a human operator initiates payment, handles approvals, and sorts out reconciliation later. AI workflows break that assumption. Once software starts triggering checkout, payouts, collections, or billing actions, engineering teams suddenly inherit new surface area: delegated credentials, payment controls, operations, and auditability.
Core building blocks
Delegation model: The assistant or workflow gets bounded payment authority, not unrestricted access to company credentials.
Intent model: Before payment, the workflow declares purpose, expected amount, merchant, and context.
Policy engine: Rules evaluate the request and decide allow, deny, or escalate.
Payment layer: Scoped cards, accounts, wallets, and transfer flows execute the transaction without pushing everything into app code.
Evidence records: Every transaction is linked back to the workflow or assistant action that caused it.
Why traditional payment APIs break for agents
Credential possession is treated as authority, without enough context around purpose, merchant, or workflow.
Controls often live in application logic instead of in the payment path itself.
Per-workflow isolation is bolted on rather than designed in from the start.
Finance and operations teams cannot easily answer which AI action caused a charge or transfer.
The product team ends up inheriting too much payment operations complexity just to enable one workflow.
Reference architecture
Platform Workflow Trigger
-> Agent Planner
-> Intent API (merchant, amount, purpose)
-> Policy Engine (limits, merchant, velocity, approval)
-> Payment Instrument (card / wallet / transfer)
-> Merchant or Network Authorization
-> Webhook Event Stream
-> Reconciliation + Evidence StorageExample integration pattern
const intent = await signets.intents.create({
agentId: "ops-agent-88",
purpose: "Purchase monthly API credits",
expectedMerchant: "api.vendor.com",
expectedAmount: 7500
});
const decision = await signets.policies.simulate({
expectedMerchant: "api.vendor.com",
expectedAmount: 7500
});
if (decision.result === "allow") {
await signets.cards.create({
agentId: "ops-agent-88",
type: "single_use",
limits: { perAuth: 7500, perDay: 10000, perMonth: 50000 }
});
}Use case clusters
AI assistants that need to complete checkout without a shared company card
Workflow products adding payouts, collections, or billing actions
Vendor and procurement agents that need bounded payment authority
Subscription and recurring spend flows with merchant-specific controls
Products mixing card, account, and wallet-based payment actions in one system
What to evaluate when choosing infrastructure
Can the system enforce policy before authorization, not just after?
Can authority be delegated safely by assistant, workflow, and time window?
Can your team keep payment controls and operations outside the core agent app?
Can you support cards, accounts, and wallet flows without stitching together separate stacks?
Can finance reconcile every charge or transfer to a machine-generated action?
Can your team launch the workflow without taking on a disproportionate compliance and ops burden?
FAQ
Are agent payments just virtual cards?
No. Cards are one instrument. Agent payments also include delegation logic, approval controls, account or wallet flows, and the records needed for operations and finance.
Do I need to take on PCI and money movement complexity myself?
Most teams do not want to. They want a provider or partner layer that keeps delegated instruments, controls, and reconciliation outside the agent application itself.
What is the first integration milestone?
Get one AI workflow to declare intent and complete one policy-controlled payment end to end with reconciliation attached.