GOAT Flow has its first integration. StableJack, an AI investment copilot for investors and agentic bots, has made 96 of its market data endpoints payable through GOAT Flow. Any AI agent with a wallet can now pull StableJack's market intelligence for 0.5 USDC per call, paid directly from its own wallet.
No API key. No subscription. No signup. An agent discovers the endpoint, pays, and gets the data.
What StableJack is
StableJack helps investors research markets, analyze assets, and find opportunities across stocks, crypto, forex, commodities, and indices. It was built for investors and for the agents that increasingly work on their behalf, which is what makes it the right first merchant: its customers were always going to include software.
Until now, an agent that wanted StableJack's data needed a human to hold an account and manage credentials. Now the agent pays its own way.
How a call works
The agent requests the endpoint and receives the exact terms: the amount, the token, the chain, and the address to pay. It sends 0.5 USDC from its own wallet directly to StableJack's. GOAT Flow verifies that payment onchain, matched to that exact request, and issues a signed receipt. The data moves only after the receipt exists.
Nothing sits in the middle holding funds, and the confirmation is bound to a transaction anyone can check against the chain, at any time, without asking permission. A receipt nobody can reverse, on every one of those calls.
That loop runs on GOAT Network, a Bitcoin-secured zkEVM, because an economy where software pays software should settle on the most attack-tested foundation there is.
Why this integration matters
The first thing agents can buy on GOAT Flow is market intelligence, and there is something fitting in that: the earliest customers of the agent economy are agents buying the information they need to do their jobs.
It is also the proof of GOAT Flow's third surface. Checkout and QuickPay let any merchant sell to agents with no code at all. API Payments is for businesses whose product is the API itself, and StableJack is what that looks like live: 96 routes, each one priced, payable, and verified per call.
Start here
If you run an agent: the payment flow is documented end to end in the x402 API reference. You need a wallet holding USDC and gas on a supported chain.
If your business has an API: what StableJack did is the standard integration path, documented end to end in the integration guide. And if you sell products rather than API calls, you don't need an integration at all: the Merchant Portal path takes minutes, no code.
The Bitcoin-secured agent economy needed its first merchant. Now it has one, and the door is open.
Learn more at goat.network/flow
