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code402 B2B Invoice Creator
x402
code402 B2B Invoice Creator is a paid API for AI agents from hcrb.in, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).
Creates a verifiable B2B invoice with a payment URL for a business transaction, returning invoice ID, invoice URL, and pay URL via x402 micropayment protocol
Price / call$0.005
Success—
StatusUnknown
How this service works
Offline deterministic checks (no ML, no scraping) for business identifiers and rental due-diligence, paid per call via x402 (gasless EIP-3009 USDC on Base). Checksum-verifiable (IBAN, LEI, VAT, ABA, ISBN, SEDOL…) vs format-only (EIN, IFSC, SWIFT/BIC…) — every response returns a scope field. Non-custodial, signed receipts. First 3 calls/day free.
Output
Returns a JSON object with: a boolean validity flag, unique invoice_id, a shareable invoice_url, a pay_url the payer can use to complete payment, amount_usdc, protocol_fee_usdc, cart_hash for integrity verification, merchant name, tool name, scope, and status string.
Example use cases
Freelancer sending crypto invoice
“I just finished a web design project and my client wants to pay in USDC — can you create a B2B invoice for $500 and give me a payment link I can send them?”
SaaS platform billing a business client
“Generate a B2B invoice for our enterprise customer TechCorp for $1,200 USDC for their monthly subscription, and give me the invoice URL and pay link.”
Marketplace settling a vendor payment
“I need to issue an invoice to pay out one of our vendors — create a B2B invoice for $750 USDC for merchant ID 'vendor-88' and return the invoice and payment URL.”
Technical details
Endpoint
POSThttps://hcrb.in/v1/tools/create-b2b-invoice/call?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically generate a B2B invoice with an attached crypto payment URL (USDC on Base) in a non-custodial, receipt-signed manner. Prefer this over traditional invoicing APIs when the payer is expected to settle in USDC via x402, or when you need a gasless EIP-3009 payment flow. Not suitable for fiat invoicing or when the counterparty cannot pay in USDC.
Side effects
- Missing required fields (merchant, amount) returns a 400 error with validation details
- Payment not settled results in invoice remaining in unpaid state
- Invalid cart_hash causes invoice creation to fail
- x402 payment gateway unavailable causes a 402 or 503 response
- Exceeding free-tier (3 calls/day) without payment causes rejection until USDC micropayment is made
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"valid",
"invoice_id",
"invoice_url",
"pay_url"
],
"properties": {
"tool": {
"type": "string"
},
"scope": {
"type": "string"
},
"valid": {
"type": "boolean"
},
"status": {
"type": "string"
},
"pay_url": {
"type": "string"
},
"merchant": {
"type": "string"
},
"cart_hash": {
"type": "string"
},
"invoice_id": {
"type": "string"
},
"amount_usdc": {
"type": "number"
},
"invoice_url": {
"type": "string"
},
"protocol_fee_usdc": {
"type": "number"
}
}
},
"example": {
"valid": true,
"reason": "checksum valid"
}
}Tags
x402
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