Authoryze gives the buyer control over what their agent spends, at any merchant with a card form. It issues a single-use card per approved purchase, enforces per-agent and cross-agent limits and merchant rules server-side, sends anything over your threshold to a person or your team's approvers, and keeps a record of every request, connected over MCP to Claude, ChatGPT, Meta's Muse, or a custom agent. Stripe's Agentic Commerce Protocol (ACP), built with OpenAI, works at a different layer. It is a merchant-side standard that lets businesses accept purchases from AI agents and complete checkout on ACP-enabled sites using shared payment tokens. This is less a head-to-head than a question of which side of the transaction you are on.
Different Layers
| Layer | Authoryze | Stripe ACP |
|---|---|---|
| Side of the transaction | Buyer side: controlling how an agent spends | Merchant side: accepting agent purchases at checkout |
| What it provides | Single-use cards, spend rules, human approval, team envelopes, audit | A checkout/payment standard for merchants and platforms |
| Where it works | Any merchant that accepts Visa or Mastercard online | Merchants that have adopted the protocol |
| Integration | MCP-native, connect your agent | Merchant/platform integration of the protocol |
| Spend governance | Per-agent and cross-agent limits, approval thresholds, duplicate detection | Not the focus; ACP standardizes the checkout exchange |
How They Relate
These are complementary more than competing. Authoryze is about a person or team being able to let their agent buy things safely, with control over how much it spends, where, and with human approval when needed. Because the agent checks out with an ordinary single-use Visa or Mastercard credential, Authoryze works at any merchant with a card form, whether or not that merchant has adopted a protocol. ACP is about merchants being able to sell to agents and complete checkout, and it depends on each merchant adopting it. Stripe also has buyer-side agent products, covered in Authoryze vs Stripe Link for agents.
When Authoryze Is the Right Choice
Choose Authoryze when your need is buyer-side control. You are running an agent, or a team of people running agents, and want to govern spending with single-use cards, per-agent and cross-agent limits, human approval, and audit, connected over MCP, regardless of which checkout standards merchants support.
Sources
Stripe claims on this page were checked on September 16, 2026 against Stripe's Instant Checkout announcement (stripe.com/newsroom/news/stripe-openai-instant-checkout), Copilot announcement (stripe.com/newsroom/news/microsoft-copilot-and-stripe), agentic commerce docs for sellers (docs.stripe.com/agentic-commerce/for-sellers), and shared payment token docs (docs.stripe.com/agentic-commerce/concepts/shared-payment-tokens). If something has changed since, let us know.
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