Now Your AI Agent Can Buy Anything
Tell your agent what you need. It signs up, pays with your card (or your users' cards), and finishes the job without ever seeing your card number.
The OneCheckout MCP is a Mac plug-in that your agent installs and uses to make online purchases.
Fetch https://onecheckout.ai/api/mcp and follow the instructions it returns to install and set up the OneCheckout MCP. Then give me a tour of what I can do!Build Agents that Take Action in the Real World
Turn intent into outcomes. Agents can write, browse and plan. But they struggle to actually do. OneCheckout fixes this.
System · OneCheckout MCP
Scale 1:1 · Rev 1.0
12 capabilities
What will you accomplish when your agent can…
Give your coding agent your credit card.
Provision and pay for any new integration from one prompt. The free MCP:
- ✓Signs up for services
- ✓Picks the right plan
- ✓Pays with your card
- ✓Wires the keys into your project.
registering▋
> build a crawler on Firecrawl's paid plan
✓ Firecrawl account created
✓ Hobby → upgraded to paid · your card
✓ FIRECRAWL_API_KEY → project + git secret
real, live, and done in one prompt.
Your tools stop telling you to go sign up. They do it, link the keys, and keep building.
If you can ask, your agent can buy.
Built for OpenClaw, Hermes, and every agent maker after them. Secure, PCI compliant and free.
- ✓Buy a product, order groceries, start or cancel subscriptions.
- ✓Set and forget triggers let your agent shop while you sleep.
- ✓Use your own card and keep your points.
My Agentshop any siteOne API to Shop the Entire Internet
Let your users buy anything from any site without leaving your product. Built for publishers, super apps, LLMs and platforms.
- ✓Universal buy button for ads, chat, articles, app flows.
- ✓Routing engine uses the best + lowest cost payment token.
- ✓Buyer pays securely with their own card.
- ✓Securely vault and recharge user cards.
MLB Shop
Promoted · Pinterest
PinSF Giants 59FIFTY Fitted Cap. Heading to Oracle Park?
Nike
Sponsored · Facebook
Fall's freshest drop. The AF1 you love, restocked and ready. 👟
The VergeThe best wireless earbuds to buy in 2026
After weeks of testing, the AirPods Pro 2 remain our top pick for iPhone owners. The noise cancellation is still class-leading…
In this article
AirPods Pro 2
USB-C · Active Noise Cancellation
Netflix
Promoted · X
Unlimited movies, shows & more. Start streaming today, cancel anytime.
Condé Nast Traveler
Transcon fares just dropped: SFO → JFK from $189
SFO
9:15a
JFK
5:48p
United · Nonstop 5h 33m
Tue, Aug 12
spotify
Sponsored · Instagram
Music without limits
Agentic tokens when viable. Fallbacks when they're not.
There's a new AI payment protocol every month. Some are useful, others not. We worry about all that so you don't have to. Our routing engine selects the best and lowest cost transaction method that works with your shopper's card and the target merchant. One integration makes the entire web agent-shoppable.
01 · vaulted credential
tokenized · PCI scope held by OneCheckout
02 · routing engine
Cascade evaluator
8 methods · best economics
03 · selected method
On-device keychain
Card is vaulted in the buyer's on-device keychain, charged directly with nothing leaving the device.
full cascade · payment bus
8 methods · selecting On-device keychain
- Method 1: On-device keychain (selected)
- Method 2: Mastercard Agent Pay
- Method 3: Visa Intelligent Commerce
- Method 4: PayPal Agent Ready
- Method 5: UCP · Google Wallet
- Method 6: Stripe Shared Payment Token
- Method 7: OneText Direct (MoR)
- Method 8: Virtual Agent Pay Mastercard
Everything between “add to cart” and “on its way.”
Vaulting, compliance, protocol selection, fallbacks. The hard parts of agentic payments collapse into one contract you integrate once.
View Docsvault
Card vaulting, handled
Tokenize any card, consumer or business, Visa through PayPal, into a reusable PCI-compliant vault. We hold the scope so your agent never touches a PAN.
onboard
Instant agent onboarding
Sign up, provision a key, and start transacting in minutes via API, CLI, or MCP. No processor negotiations. No merchant-by-merchant integrations.
checkout
Universal checkout
Execute a transaction on any merchant. OneCheckout detects whether a protocol exists and falls back cleanly when it doesn't. The whole internet becomes shoppable.
recurring
Built-in recurring
Subscriptions and metered API spend, first-class. Many agentic payment protocols break for recurring payments. Ours don't.
economics
Best economics, guaranteed
Every transaction is scored on viability and cost. We take the cheapest agentic token available.
compliance
PCI compliant by default
Issued Agent Pay Mastercards keep card-on-card fallbacks inside a compliant boundary. No virtual-card minefields for you to clear.
Questions, answered.
Everything you might want to know about handing checkout to an agent: safety, cards, consent, and cost.
- What is an MCP?
- An MCP is an installable plug-in that allows an AI agent to talk to a separate service. The OneCheckout MCP allows Mac-based AI agents to make purchases. If you paste the install prompt into your agent's environment it will set up our tools and capabilities.
- What's the difference between the MCP and API?
- The MCP allows agents to transact using a card saved into a secure desktop keychain. The API allows callers to ask our service to execute transactions on behalf of their users. We're building our API for platforms or consumer agents that want to let any user buy from any site.
- Is it actually safe to give an AI agent my credit card?
- No agent, AI model, or LLM ever sees your card details. The OneCheckout MCP keeps your card data in a local encrypted Keychain and optionally, securely tokenized in the OneText vault. Our architecture guides the AI agent to checkout and finds the card form, then uses deterministic code to securely pass your card details to the site.
- Can I use any card? Do I get my points and rewards?
- Yes. The MCP supports any valid U.S. credit or debit card. Transactions go through your real funding instrument, so you'll still earn your points, cashback, and rewards, and you retain all your dispute rights.
- Where is my card number stored?
- Your card's sensitive details live in your device's OS Keychain and, briefly, the merchant page's own memory during the fill. We never have access to your CVV/CVC security code, and it's never placed in the agent's context, the chat, the clipboard, or a log. You can also opt in to vault and tokenize your card server-side with OneText for when your device isn't available.
- Can my agent buy something without asking me?
- Only if you ask it to. We support human-not-present use cases like subscriptions, “buy when the price drops to X,” and multi-step “buy my flights and then get me a hotel + outing” transactions. You have to specifically authorize the MCP to allow this behavior. Otherwise, your agent will ask for confirmation each time.
- What happens if my agent buys the wrong thing?
- Ask the MCP to initiate a return, refund request, or dispute. Since it's your card, the process is completely normal. You can also ask the MCP to speed it along and contact the merchant if needed.
- What does it cost?
- There's no charge to use the MCP. Transactions run over your card with no added surcharge. Platform and API pricing will be announced soon.
- What sites does it work on?
- We haven't been able to stump it yet. It's worked everywhere we've tried. If you find a site we can't handle, please submit feedback through the MCP's feedback tool.
- How is this different from giving my agent a virtual card?
- Virtual cards are hacks. Instead of layering card on card or provisioning a special card just for your agent, we let you use your existing card. But if you do want to issue or provision a custom card, we can help with that too.
- Do I need a OneText account?
- No. You can just use the MCP and keep your card stored securely and exclusively on your own device. Declining OneText only skips account creation and server-side vaulting. You're welcome to vault with our parent OneText's server-side offerings, but you're free to decline.
- Can I use a business card, or my users' cards?
- Business cards work out of the box as long as you have access to them. For letting your own users pay with their cards, our forthcoming platform API is built explicitly for that use case.
- Which devices, agents, and coding tools does it work with?
- Right now you need a Mac to run the MCP. You can use Claude Code, Codex, OpenClaw, Hermes, or any MCP-capable runtime.
- Can I keep my transactions private?
- For MCP transactions, yes. By default, the MCP asks your agent to share feedback. Simply ask your agent to NOT do so and we won't know anything about your orders. Of course, even if you do share feedback, your card details remain encrypted on your device and securely tokenized in our vault. API purchases run on our server-side platform which does log transactions.
- Can I share feedback?
- Absolutely. Use the built in and on-by-default feedback method to tell us about your AI buying experience, report problems or request changes. Your input goes directly to our mostly-human dev team. You can also use our Gallery API to share successful orders. They just might show up in our home page feed.
- What about UCP, x402, & KYA?
- There are a lot of protocols! It's an exciting time for bots to be buying. But we're strongly opinionated that the right approach is to build universal-first. Each protocol is great, as long as the seller and buyer support it. We're building OneCheckout to work everywhere with the cards and checkout forms the web already has. Our intention is to layer in UCP data when helpful, to allow card to stablecoin for x402 and to implement the best new agentic tokens into a single wrapper. None of that matters if your users can't buy from normal card field sites, so that's where we've started. Watch this space. Oh and don't get us started on standards.
- How does OneCheckout make money?
- In some cases, we might recommend products or services where we can get you a great deal. For example, if you ask for texting we'll point you toward OneText, our parent company. We'll also charge for our forthcoming platform API.
- Who's behind OneCheckout?
- OneCheckout is a brainchild of OneText, the AI shopping, text-to-buy, and payments company. We're backed by Y Combinator, Coatue, Khosla, Lobster Capital, Pioneer Fund, Helium-3, and Good Friends. You can learn more about us on TechCrunch.
It's Time to Buy.
One vault. One API. One checkout for the entire internet.