USEInferra is an open exchange for AI inference. Hold one OpenAI-compatible key and every request you send is shopped across sellers — the cheapest one that's actually healthy takes the call. You settle in USDG, straight from a wallet you control.
Worked example only — real sellers and live rates sit on the Market page. No outside seller has listed yet.
USEInferra lines up the offers, drops any seller failing its health checks, and retries on the next seller when a call breaks.
# one key, every model — the request curl https://api.useinferra.xyz/v1/chat/completions \ -H "Authorization: Bearer $USEINFERRA_API_KEY" \ -d '{"model": "openai/gpt-6-luna", "messages": [{"role": "user", "content": "Say hello in one line."}]}'
# the response — cheapest healthy seller answered HTTP/1.1 200 OK x-useinferra-seller: seller-b x-useinferra-route-ms: 18 { "model": "openai/gpt-6-luna", "choices": [{ "message": { "content": "Hello — routed at the market's best price." } }], "usage": { "prompt_tokens": 14, "completion_tokens": 11 } }
Try it yourself, no install needed. Paste your Heura API key to chat for real with the model you pick. A key is required — no message is sent until you add one.
About the key: it lives only in your browser while this page is open — it is sent nowhere except api.useheura.com when you press Send, and no key of any kind is embedded in this page. To get a key, create one in the Heura app under API keys and top up USDG from your wallet.
This chat calls the endpoint POST https://api.useheura.com/v1/chat/completions with your own key. Paid calls draw down your USDG balance at market prices.
Your SDK talks to a single base URL. Behind it, USEInferra weighs every seller's offer, cuts the ones that aren't responding well, and hands the request to whoever discounts deepest. The bill is list price minus that winning discount — and a dead seller never takes your call down with it, because routing falls through to the next in line.
No procurement process, no card on file. Connect on Robinhood Chain, load a balance, fire a request.
Sign in with any Ethereum-style wallet on Robinhood Chain. No email, no password — and a sign-in signature can't move a single token.
Transfer USDG out of your own wallet. Each USDG becomes exactly one dollar of spend, credited the moment its receipt lands on-chain.
Mint a spend-capped key, swap the base URL, and you're live. Every call lands on the cheapest healthy seller, with a fallback queued behind it.
USEInferra answers the OpenAI API your stack already speaks. Point it at https://api.useinferra.xyz/v1 and generate keys inside the app.
Five hops, each one readable on the Robinhood Chain explorer. No human sits in the middle approving payments.
Pick an amount and you get back who gets paid, which token, and a reference that works exactly once.
A single transfer carrying that reference, signed by you. Your keys never leave your wallet — we couldn't hold them if we wanted to.
The server pulls the transaction from the chain itself and checks payee, token, amount, and reference against the quote.
One USDG, one dollar of credit — and that payment is burned as a credential. It can never credit anyone again.
Every request is charged at list price minus whatever discount the winning seller put on the table.
One-way by design: balance can't be transferred or withdrawn — it only buys inference. If a paid call fails, the refund is logged and settled by the operator.
Ship on one key, let software pay for itself request by request, or put spare capacity up for sale. Every side trades in the same pool.
Inference at whatever the market's best price is today
One request, one payment, no account at all
Turn idle provider or GPU capacity into revenue
Toggle on means built and tested. Toggle off means it isn't available yet — no asterisks.
USEInferra is in beta, so there are no customer volumes to parade around — the only transfers so far are USEInferra's own test payments. What you can inspect is the mechanism: every payment is a plain USDG transfer on Robinhood Chain, visible to anyone with the explorer open.
Both links open public records on the Robinhood Chain explorer — the token contract behind every payment, and the chain those payments settle on.
The USDG token contract Robinhood Chain explorerEverything below ran locally and in automated tests, never against customer money. Treat it as evidence of work, not a promise — the unfinished list sits right next to it.
Nothing has been audited. When a report exists, it gets published.
Gone, deliberately. It only returns once a Solidity version exists and passes audit.
One seller so far, and it's USEInferra's. Real-world model quality is unmeasured.
The token trades; the product is still beta. No outside customer's funds have passed through it.
The order is deliberate: prove the money path first, build the product around it second. Nothing in the later rows is being sold as live.