OneCheckout vs. Skyfire: The Passport and the Purchase

TL;DR: this one isn't a rivalry. Skyfire is building the identity layer that lets the internet recognize AI agents as legitimate customers instead of bots to block. OneCheckout is building the checkout layer that lets an agent complete real purchases on its owner's own card. One works the supply side of agentic commerce, one works the demand side, and a world where both succeed is better for anyone who owns an agent. Consider this less a battle card and more a field guide to a neighbor we respect.

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The problem Skyfire picked

The internet has spent twenty years building an immune system against automated traffic. Bot managers, fraud engines, rate limiters, CAPTCHA walls: an entire industry exists to detect non-human visitors and shut them out. That immune system doesn't distinguish between a scraper farm and your personal agent trying to book you a flight. To the perimeter, both are bots.

Skyfire's bet is that the fix has to happen at the perimeter itself. Their KYA protocol (Know Your Agent) gives an agent a verified identity: a signed token that tells a website who the agent is, who the human behind it is, and what it's authorized to do. The framing borrows deliberately from KYC in banking, and it's the right borrow. The web's defenses don't need agents to disappear. They need agents to be legible.

What makes the strategy credible is who's standing next to them. The partner roster on Skyfire's homepage reads like the internet's security perimeter: Akamai, DataDome, Cequence, F5, Imperva, Forter, Okta and Auth0, alongside names like Mastercard and Experian. Those are the companies that decide, billions of times a day, whether a request looks human. If they honor KYA tokens, "verified agent" stops being a metaphor and becomes a routing decision.

On top of identity sits KYAPay, their open protocol for agent payments: signed JWTs that carry either an authorized USDC amount or a tokenized card, with OAuth compatibility so services don't rebuild their auth stacks, plus native support for microtransactions and agent-to-agent payments that card rails can't economically serve. They've published the spec, open-sourced a reference implementation, and submitted it to the IETF as an Internet-Draft co-authored with Michael Jones, one of the authors of the JWT and OAuth specifications. That's a team trying to build a standard, and behaving like it.

In December they demonstrated the loop closing: an agent completing a consumer purchase end to end using KYAPay together with Visa Intelligent Commerce and Visa's Trusted Agent Protocol. A prototype in a controlled environment, as they were careful to say, but the direction is unmistakable, and it happens to be the direction we're betting on too.

The problem we picked

OneCheckout starts from the other end of the transaction: a person with an agent, a credit card and something they need done.

Our product is the purchase itself. The free OneCheckout MCP lets an agent buy on the open internet today, paying with its owner's own card through an eight-method cascade that prefers native agentic tokens (Mastercard Agent Pay, Visa Intelligent Commerce, PayPal Agent Ready) and falls back until the order clears. The card never enters the agent's context; it's captured to the Mac's Keychain and tokenized on-device. The buyer keeps their rewards, their purchase protections and their dispute rights, because the purchase is genuinely theirs. And because the agent runs in its owner's environment, it shops logged in, with the member pricing and loyalty accounts the owner already earned.

The same machinery goes past shopping. An agent with OneCheckout can incorporate a business, register domains, provision phone numbers and stand up a SaaS stack, twelve capability areas in all. Skyfire makes agents welcome guests on the internet. We make them productive residents.

Where the two roads meet

The overlap isn't competitive. It's convergent, in three places.

The token rails. Both companies are building for the same future: agent transactions carried on network-native credentials with verified identity attached. Skyfire demoed it with Visa Intelligent Commerce; we route live purchases through it. When the networks finish rolling these rails out, Skyfire's identity layer and our checkout layer are describing the same transaction from opposite ends.

The perimeter. Part of our cascade completes purchases on ordinary checkout pages, and our answer to bot defenses has always been honesty: the agent operates in its owner's environment, with its owner's logins and identity, which is the opposite of datacenter bot traffic. A widely adopted KYA standard would make that honesty machine-readable. If the perimeter vendors Skyfire has assembled start honoring agent passports, we'd be glad to carry one. Their success makes our fallback rails more reliable, and costs us nothing.

MCP, both directions. Skyfire built KYAPay partly as a monetization layer so MCP servers can charge for access. OneCheckout is an MCP that spends. An agent economy needs both halves: services that can get paid by agents, and agents that can pay for anything.

Where we genuinely differ

Different problems produce different shapes, and the differences are worth naming plainly rather than papering over.

Skyfire's center of gravity is the service side: businesses, API providers and the security stack, with agents as a new customer class to verify and monetize. Their beachhead economics are the transactions card rails can't serve at all, sub-dollar metered calls and agent-to-agent payments, where USDC settlement isn't ideology but arithmetic. Mainstream consumer checkout isn't where their adoption lives today, and by most readings that's a choice rather than a shortfall.

Our center of gravity is the buyer: the agent owner and the developer, with the merchant's existing checkout page as the integration surface. We route to the buyer's own credit card because rewards, protections and statement clarity matter to people, and our coverage works unilaterally, on merchants who have never heard of an agent protocol and never will. Adoption curves are the deepest difference: Skyfire's value compounds as the ecosystem adopts the standard; OneCheckout's value is available in full the afternoon you install it.

Neither shape is wrong. They're answers to different questions, which is why this page has no head-to-head table. The honest comparison is a handshake.

If you're choosing

You mostly won't have to. If you run paid APIs or MCP servers and want to charge verified agents, or you need sub-dollar and agent-to-agent payments, Skyfire is building your infrastructure, in the open, with the right partners. If you own an agent or build one and want it buying real things on your card across the existing internet, starting today, that's OneCheckout.

And if the future both companies are building arrives on schedule, your agent will one day walk up to a checkout carrying a Skyfire passport and pay with a OneCheckout-routed token, and nobody involved will find that strange.

Your agent deserves to be recognized. It also deserves to buy things. Different problems. Same future.

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