# OneCheckout vs. Nekuda: A Vault Is Not a Checkout > Nekuda sells your agent a wallet and a permission slip. OneCheckout completes the errand. - Published: July 7, 2026 (2026-07-07) - Reading time: 6 min - Canonical: https://onecheckout.ai/blog/onecheckout-vs-nekuda - HTML version: https://onecheckout.ai/blog/onecheckout-vs-nekuda --- **TL;DR: Nekuda sells your agent a wallet and a permission slip. OneCheckout completes the errand.** Nekuda builds a credential vault and an authorization layer (Mandates) that developers wire into agents they're still building themselves. OneCheckout takes the intent and returns a confirmed order. If you're assembling your own checkout automation and need the payment component done right, Nekuda is a credible pick with serious backers. If you want the purchase itself, that's us. --- ## We agree on more than most rivals do Among players in agentic payments, Nekuda and OneCheckout largely see eye to eye. They believe agents should transact on real payment credentials inside the existing card ecosystem, and so do we. They're a launch partner for Visa Intelligent Commerce, one of the native token rails at the top of our own cascade. Their Mandates concept, a signed, verifiable record of what the user authorized the agent to buy and under what conditions, is genuinely good thinking, and their public writing on why "card not present, human not present" breaks the old rules is some of the clearest in the category. Amex Ventures and Visa Ventures wrote checks; the networks clearly agree. So this comparison isn't about philosophy. It's about what you're actually buying. **Nekuda sells a component. OneCheckout sells an outcome.** ## Two products, one word apart **Nekuda is a payments SDK for agents you build.** Their two pillars: a Secure Agent Wallet that collects and stores payment credentials and injects them at checkout, and Agentic Mandates that record user authorization with spending limits and conditions. Drop in the SDK, offload the PCI burden, retrieve cards just-in-time. What remains yours: the agent that finds the product, resolves variants, reaches the payment page, survives the merchant's bot defenses, and retries when the flow breaks. Nekuda hands your agent the card at the moment it's standing at the register. Getting to the register is your engineering roadmap. **OneCheckout is the register, the card and the trip.** Intent in, confirmed order out. The eight-method cascade routes each purchase to the best viable rail, preferring native agentic tokens (Mastercard Agent Pay, Visa Intelligent Commerce, PayPal Agent Ready) and falling back until the order clears. Vaulting is in there, on-device in your Keychain or server-side through OneText, but it's one layer of the machine rather than the product. Nobody integrates OneCheckout and then goes off to build checkout automation. The automation is what they integrated. ## A vault is not a checkout Storing a card is real work, and we won't pretend otherwise; PCI scope is why most teams shouldn't touch raw credentials. But the distance between a stored credential and a completed purchase is the entire hard part of agentic commerce. Checkout flows differ per merchant. Shipping and tax resolve late. Bot walls exist specifically to stop your agent. Failures need retries, and retries need alternate rails. A vault contributes exactly one step to that pipeline: producing the card at the right moment. That's why the build-vs-buy math matters here. Integrate Nekuda and you've acquired a wallet; you're still hiring the team that builds the driver. Integrate OneCheckout and the purchase is the deliverable. There's a second structural difference emerging. Nekuda's newest products face the merchant: WebMCP endpoints, remote checkout management across ChatGPT and Gemini, tooling that channels agent traffic into lanes the merchant has sanctioned, including controls to block unsanctioned remote-browser traffic outright. It's a coherent strategy, and it means their coverage grows one merchant integration at a time. OneCheckout's coverage doesn't wait for the merchant to do anything. The checkout page that exists today is the integration. ## What only OneCheckout does **Deliver the confirmed order.** The unit of value is the completed purchase, on the buyer's own card, with the buyer's own rewards, through whichever rail clears. No assembly required. **Agentic tokens in production, not on the roadmap.** Both companies bet on the network rails. Ours are wired into a live cascade today, with universal fallbacks behind them for the merchants the tokens don't reach yet. **Everything that isn't shopping.** The same MCP that buys a flight can incorporate a business, register domains, provision phone numbers and stand up a SaaS stack, twelve capability areas in all. A payments SDK has no opinion about any of that. **A consumer product you can install today.** The OneCheckout MCP is free and works with any MCP-capable runtime. Nekuda's SDK is for developers building agents; there's nothing for the person who just wants their agent to buy things this afternoon. ## What Nekuda gets right **Mandates.** The authorization problem is real, their framing of it is the best in the category, and the industry would be better off if a mandate standard existed. Our confirmation-before-irreversible-action model solves the same problem for our users, but their push toward a network-verifiable standard is work we're glad someone is doing. **The credential layer as a product.** If you're a platform determined to build your own checkout automation, whether for control, for latency or for a use case we don't serve, a drop-in vault with network token support and no PCI burden is exactly what you should buy instead of building. That's a real customer, and Nekuda serves them well. **Network relationships.** Visa Ventures and Amex Ventures as investors, and a launch-partner seat for Visa Intelligent Commerce, are signals that the rails themselves trust the team. In payments, that's not a vanity metric. **The merchant wedge.** Their visibility product, showing merchants what AI assistants actually say about their sites, is a clever door-opener, and merchant-sanctioned agent lanes may well be part of the end state. We just don't think buyers should wait for it. ## Head to head | | **OneCheckout** | **Nekuda** | |---|---|---| | What it is | Universal checkout: intent in, confirmed order out | Payments SDK: credential vault + authorization mandates | | Unit of value | The completed purchase | The payment component | | Who builds the checkout automation | We already did | You do | | Merchant coverage model | Works on existing checkout pages, no merchant action needed | SDK rides your agent's reach; merchant products require per-merchant adoption | | Agentic token rails | Live in an eight-method cascade | VIC launch partner; token support in SDK | | Authorization model | Confirmation before irreversible actions; pre-authorized triggers | Signed Mandates with limits and conditions | | Vault | On-device Keychain or OneText server-side, one layer of the stack | The core product | | Beyond commerce (incorporation, phone numbers, SaaS, API keys) | Yes, 12 capability areas | No | | Consumer product today | Free Mac MCP | None; developer SDK | | Buyer's own card and rewards | Yes | Yes, credentials are the user's own | | Backing | OneText (YC W23) | $5M seed: Madrona, Amex Ventures, Visa Ventures | ## Which one is for you **Pick Nekuda if** you're building your own agent checkout automation and want the credential and authorization layer handled by a team the card networks themselves have backed. Component buyers exist for good reasons, and this is the best-credentialed component in the market. **Pick OneCheckout if** you want purchases, not parts. Your agent, running in your environment, buying on your card, across any merchant, today, with the token rails Nekuda is betting on already live in the cascade. We suspect Nekuda would agree with almost every sentence on this page except the conclusion. That's what makes this the interesting comparison: same thesis, same rails, same respect for the buyer's own card. The difference is that they'll sell you the vault, and we'll sell you the purchase. Your agent. Your card. The whole errand. **[Try the free MCP →](https://onecheckout.ai/connect)**