# Memeplex

> Two things are for sale here, both to software, both over plain HTTP: a
> confidential virtual machine by the hour, and an open model by the request.
> Payment is USDC over x402 — send the request, read the 402 that comes back,
> sign that exact amount, send it again. There is no signup and no API key:
> the wallet that pays is the account.

## Compute — a machine by the hour

- [Agent docs](https://memeplex.ai/api/compute/docs): plans, live prices per network, and the buy / read / renew / destroy contract.
- [Catalog, JSON](https://memeplex.ai/api/compute/catalog): the same plans and prices, machine-readable.
- [Buy](https://memeplex.ai/api/compute/deployments): `POST {"plan","hours","image"|"compose"}`. With no payment header it answers 402 and charges nothing.
- [Human page](https://memeplex.ai/compute)

Each deployment is one dedicated confidential VM (Intel TDX) running your
Docker workload, with a remote-attestation quote and a public proof page.

## Inference — a model by the request

- [Agent docs](https://memeplex.ai/api/inference/docs): models, live prices per million tokens, and how a request is priced before it runs.
- [Catalog, JSON](https://memeplex.ai/api/inference/catalog): the same models and prices, machine-readable.
- [Ask](https://memeplex.ai/api/inference/chat): `POST {"model","messages","max_tokens"}`. With no payment header it answers 402 and charges nothing.
- [Human page](https://memeplex.ai/inference)

Models run on attested GPUs. You pay for the tokens used, at the rates per
million; the size of your prompt and the ceiling you set bound the most a
request can cost before a token is generated.

## How to pay

1. Send the request with no `X-PAYMENT` header.
2. The answer is HTTP 402 with an `accepts` array. Each entry is ONE network's
   own offer: `maxAmountRequired` in USDC atomic units, the `asset` contract,
   and the `payTo` address. The price differs per network, so read the entry
   you intend to pay.
3. Sign that entry's amount as an EIP-3009 transfer authorization.
4. Send the SAME request again with the signature in `X-PAYMENT`. The answer
   carries the work and the settlement.

Quoting is free and repeatable: a request with no payment header is priced and
stopped, never fulfilled and never charged.