Pay-per-call AI. No compromises.
We built Sats4AI because every other AI service wants your identity, your card, and a monthly commitment for tools you use once a week. That trade is a choice — not a requirement.
Why we built this
The identity tax on AI is optional.
Every major AI product sits behind the same wall: email, phone number, card on file, terms of service that change overnight, and a $20/month minimum to keep the lights on. For a journalist in Lagos, a builder in Buenos Aires, or an autonomous agent running on someone's laptop, that wall is the product — not the AI behind it.
Bitcoin Lightning made it possible to charge a tenth of a cent for a single API call, route it across the world in under a second, and settle it without a bank in the middle. The L402 protocol made it possible to turn HTTP 402 — the “Payment Required” status code that sat unused for twenty years — into a real authentication scheme.
Put those two together and the subscription model stops being inevitable. You don't need an account to pay. You don't need an account to be paid. The transaction is the relationship.
The sovereign AI stack
Six layers. We are one of them, and we say which.
You're on a VPN. You pay in sats. Your identity is a Nostr key. You run inference locally. You orchestrate from your own machine. Your stack is sovereign — until your agent needs a layer it does not have. There are things no LLM can do by itself: call the airline to claim a refund, send a Bengali SMS to confirm a shipment, make an audiobook from your latest EPUB, write a birthday song for your daughter, or generate a video for your blog post.
We are the row your stack is missing. No account. No API key. There isn't even a login endpoint — your payment is the only key.
We do not run your model or host your agent loop. We do not build a persistent output library; temporary delivery and service-specific retention windows still apply. Those layers are yours to assemble. We make the tools layer hold its end of the chain — we tell you so you don't mistake one row for the whole stack.
One leak in the chain leaks the chain
Why the weakest row decides the whole stack.
A card and provider account can attach requests to a billing identity and a persistent activity history.
The key ties every call back to your account. Same outcome, different door.
The account undoes everything the VPN protected. One row collapses the rest.
USDC and USDT are issued by KYC companies that have frozen wallets and can reverse you. Crypto rails, fiat surveillance.
Once your data lands in someone's pile, here is where it goes:
The web made aggregation cheap — cookies, email, phone, login all pointed at the same person. AI will do it again with deeper data. The play has two parts: obfuscate at every layer, and spread across providers so no one owns the whole picture.
What we believe
Privacy, sovereignty, and micropayments are the same idea in three forms.
Privacy is a default, not a feature
No account means no identity anchor: no registration email or phone number that owns a customer history. An ordinary request belongs to a payment and a job, not to a registered customer. We keep the operational records needed to deliver and protect the service, and we do not sell usage data.
You should own your wallet
Not a reusable balance inside our service. Not credits. Not a stored card. You pay each invoice from your wallet. A failed-job refund can remain claimable until you collect it or its claim window expires.
Agents are first-class users
An AI agent cannot fill out a credit card form, click a CAPTCHA, or sign up for Stripe. L402 and MCP let them pay and work the same way humans do. We designed for agents first.
Micropayments make new things possible
When a phone call costs 40 sats, a translation starts at 1 sat per 1000 characters, and a TTS job costs less than a rounded penny, whole categories of software become economically viable for the first time.
How we're built
Self-funded. No investors. Our only obligation is to the person paying the invoice.
Sats4AI is self-funded and independently operated. We have no venture capital, no board, and no growth targets imposed by outside capital. That independence means we don't have a roadmap to monetize user data, bolt on KYC to satisfy an acquirer, or chase vanity metrics.
If we ever have to choose between serving our users and serving someone else, there is no one else to serve. Revenue comes from sats paid by people and agents who find our tools useful. If that stops, we stop.
What this means in practice
- We will never add a signup wall to existing tools.
- We will never require KYC to use a paid endpoint.
- We will never sell or rent personal or usage data.
- We will never lock paid results behind a monthly subscription.
- If we shut down, everything you've already paid for you already have. No account state to lose.
How we make money
A small markup on each call. That's the entire business model.
We pay upstream providers for compute, bandwidth, and network services. We add a margin. You pay the total in sats. When a call costs us 3 sats, we charge 5. When a call costs us 1,000 sats, we charge 1,200. No subscription floor, no volume lock-in, no “enterprise” tier that locks features behind a sales call.
Prices in sats generally go down over time. Bitcoin's purchasing power tends upward and models get cheaper — we pass both savings on rather than re-pegging to fiat. See Bitcoin-Native Pricing in the Terms for the full explanation.
What we don't do
Name what you refuse to do, so you can be held to it.
No signup
There is no account to create. There is no login page.
No KYC
We do not verify your identity or create a registered customer profile.
No card on file
We do not hold your card. We do not auto-charge.
Limited retention
Transaction records and disclosed delivery, safety, and abuse records remain only for their operational purpose.
No tracking
We do not build user profiles across requests.
No account-country gate
We do not ask for an account country. Provider and destination restrictions can still apply.
Bounded safety limits
Paid communication tools use destination and abuse limits to protect recipients.
No lock-in
The L402 protocol is open. The MCP server is public. Walk away any time.
No model hosting
We do not run your LLM. Bring your own — local or paid without an account.
No agent hosting
Your loop runs on your machine. We are a tool your agent calls, not a platform it lives on.
Who we are
Bitcoiners who build infrastructure.
A small team of founders, engineers, and bitcoiners operating Sats4AI full-time. We run our own Lightning nodes, write our own payment code, and rely as little as possible on intermediaries we can't replace. If an upstream provider fails or changes terms, we have a fallback ready. Reliability is a feature you pay for — so we treat it that way.
We're reachable via our contact page, on Nostr, and at events across the Bitcoin circuit. Feedback shapes the roadmap — you can see what's next and vote with sats on the roadmap page.
Get started
The only thing between you and the tools is a Lightning invoice.