VM Pay
Add VM Pay checkout to a supported website integration. VM Pay fee: 2-3% + card processing. One script tag. Stateless relay. Cryptographic receipts.
Bring your own agent: open HTTP API + MCP, any compatible runtime. Compatibility and vendor independence.
Embed
Add VM Pay to your site. One script tag. Works alongside your existing checkout.
Transact
Buyers click “Pay with VM.” The transaction flows through the relay. See payload and transaction-record retention. Receipt generated.
Settle
Payments use Stripe Connect; seller fund availability depends on release conditions and processor timing. VM Pay fee: 2-3% ($0.50 minimum) plus applicable card-processing charges, shown before payment and itemized on the Ed25519-signed receipt.
Quick Start
<!-- Add VM Pay to your site -->
<script src="https://verticalmarketplace.ai/vm-pay.js"></script>
<button onclick="VMPay.checkout({
amount: 49.99,
currency: 'USD',
description: 'Premium AI Assessment',
publishableKey: 'vmpk_...', // from POST /api/vmpay/merchants
success_url: 'https://yoursite.com/thank-you'
})">
Pay with Vertical Marketplace
</button># Register your site (keys returned once)
curl -X POST https://verticalmarketplace.ai/api/vmpay/merchants \
-H "Content-Type: application/json" \
-d '{"name": "Your Store", "siteOrigin": "https://yoursite.com"}'Sandbox runs the full rail — forensic chain, fee split, Ed25519 receipt — with zero real money. Live card settlement (Stripe Connect) activates per merchant.
Questions or partnership inquiries: contact us.
Powered by VM Badge
Specialty portals that settle through Vertical Marketplace — like buymydata.ai and sellmydata.ai — display this trust badge:
<!-- Powered by VM trust badge --> <div class="vm-powered"> <span>Transactions powered by</span> <a href="https://verticalmarketplace.ai">Vertical Marketplace</a> </div>
Why VM Pay
Stripe processes payment. VM Pay records the transaction fields covered by its signed receipt. Six places that proof pays for itself:
Agent-to-agent commerce
Your AI buys a dataset from another company's AI at 3 AM. No human saw it happen. The flight recorder did — offer, authorization, remittance, receipt, in order, tamper-evident.
Chargeback defense
A buyer tells their bank “never received it.” You print the one-page receipt: what was promised, what was paid, when — cryptographically signed, independently verifiable.
Freelance & contractor milestones
A client disputes scope three weeks later. The signed receipt records the exact description both sides transacted on, at the moment of payment.
Digital goods
There is no tracking number for a download. The transaction record includes the delivery events the system captured — a replayable, signed sequence a marketplace or bank can inspect.
White-label marketplaces
Launch your own vertical marketplace on VM Pay rails. Your brand, your merchants — our settlement, our black box. Every one of your transactions ships with a signed receipt and a printable dispute record.
Audits & bookkeeping
Every fee is itemized — VM Pay margin, card processing, merchant net — and signed. Itemized receipts for reconciliation, verifiable against a public key.
Supported checkout paths include a printable, plain-English receipt — signed, verifiable, ready to hand to a bank or a lawyer.
Check a receipt on your own machine: download verify-receipt.mjs (one file, no dependencies, Node 18+) and run node verify-receipt.mjs receipt.json. It fetches the published key at GET /api/vmpay/signing-key and prints VALID or INVALID with the fields it checked. This checks a signature. It does not prove a sale was arm's-length or that any party is independent.
2-3% + card processing
VM Pay fee is 2-3% per transaction with a $0.50 minimum. Card processing (2.9% + $0.30) passes through at cost and is itemized on every signed receipt. No monthly fees. $1 minimum order. Stateless relay included.
Vertical Marketplace LLC is a member of the NVIDIA Inception program (accepted 2026). Membership is not an endorsement, partnership or investment.
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