Service overview
Stack Billing is an x402 service on Agentic Market. Agents can call it directly, pay per request through x402, and avoid long-lived API keys or provider account setup.
Level up your agent by giving it access to thousands of services. All payable per-request via x402. No API keys, no accounts.
Paste into your agentic chat and let your agent guide you.
npx awal x402 pay "https://stackbill.app/routes/x402/invoice-from-data" \
--method POST \
--data '{
"currency": "{currency}",
"dueDate": "{dueDate}",
"invoiceNumber": "{invoiceNumber}",
"lineItems": "{lineItems}",
"notes": "{notes}",
"recipient": "{recipient}",
"sender": "{sender}",
"taxRate": "{taxRate}"
}'{
"endpoint": "POST /routes/x402/invoice-from-data",
"paid": true,
"query": "integrate x^2",
"result": "x^3 / 3 + C"
}API surface
1 crawlable route
| Parameter | Type | Default | Example |
|---|---|---|---|
currency | string | null | USD |
dueDate | string | null | 2026-08-01 |
invoiceNumber | string | null | INV-2026-042 |
lineItems | array | null | [] |
notes | string | null | Payment due within 30 days. |
recipient | object | null | null |
sender | object | null | null |
taxRate | number | null | 7.5 |
FAQ
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