Financial infrastructure for AI agents.
Give AI agents wallets, payments, and spending controls through a single API.
Trusted by teams shipping autonomous systems
The gap
AI agents can work. But they can’t transact.
Today’s payment stack was built for humans clicking buttons. Agents need infrastructure built for machines.
No financial accounts
Agents have no native way to hold funds, manage balances, or operate as their own economic entity.
No spending controls
There's no shared layer for limits, allowlists, or human approvals when an agent moves money.
No autonomous payments
Modern payment rails assume a person at the keyboard. Agents need APIs designed for machine commerce.
Products
Three primitives. One platform.
A composable stack for any team putting AI agents into production.
Wallets
Programmable wallets for AI agents. Issue, fund, and reconcile balances per agent or per task.
Pay
Move money autonomously through APIs. ACH, cards, wires, and stablecoin rails — one interface.
Guard
Define spending rules, approvals, and controls. Stop bad behavior before money leaves the wallet.
How it works
From integration to autonomous payments in four steps.
Create an agent wallet
Provision a programmable wallet scoped to a single agent or task.
Apply spending policies
Set limits, merchant allowlists, approval thresholds, and time windows.
Connect payment rails
Plug in cards, ACH, wires, or stablecoins through a unified interface.
Let agents transact safely
Every action is policy-checked, logged, and fully auditable.
Developers
A clean API your agents can actually use.
Type-safe SDKs for TypeScript, Python, and Go. Idempotent endpoints, structured errors, and webhooks for every state change.
const wallet = await jstack.wallets.create({
agent: "procurement-agent",
limit: 5000
})
await jstack.pay.transfer({
wallet: wallet.id,
amount: 299
})Use cases
Built for any team putting agents into production.
AI Procurement
Agents source, negotiate, and purchase within budget.
Enterprise Automation
Replace manual approvals with policy-driven workflows.
Multi-Agent Systems
Coordinate spending across teams of cooperating agents.
AI Assistants
Let consumer assistants pay vendors on a user’s behalf.
Security
Built for secure autonomous transactions.
Defense-in-depth across the entire path from agent prompt to settled payment.
Audit trails
Immutable logs for every wallet, policy, and transfer event.
Policy engine
Declarative rules, versioned and testable like code.
HMAC auth
Per-agent keys with strict signature verification on every call.
Tenant isolation
Strong logical isolation between organizations and environments.
Approvals
Inline human-in-the-loop approval for high-risk actions.
Encrypted infrastructure
Encryption at rest and in transit, with hardware-backed keys.
Vision
The financial layer for the agentic economy.
Software is becoming an active participant in the economy. The next generation of agents will negotiate, purchase, and settle on behalf of businesses and people. jStack is the trusted substrate they transact on — predictable, auditable, and designed for autonomy from the first call.