> For the complete documentation index, see [llms.txt](https://size.club/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://size.club/docs/wallet-and-store/getting-usdc-for-the-first-time.md).

# Getting USDC for the first time

Never touched crypto? This page gets you from zero to a funded wallet.

You only need USDC for one thing: buying Keys in the Store. Everything else on Size, from Practice Trials to receiving Payouts, needs no deposit at all.

## What USDC is

USDC is a digital dollar. One USDC is designed to hold the value of one US dollar. Size uses it for Store purchases and pays all Payouts in it.

## How to get some

1. Buy USDC anywhere that sells it: a crypto exchange or an on-ramp app.
2. In Size, open Wallet and choose Receive. You will see your deposit address and the supported network.
3. Withdraw the USDC from where you bought it to that address, **on the network shown on your Receive screen**.
4. Wait a few minutes for confirmation. Your balance updates.

{% hint style="warning" %}
Always match the network shown on your Receive screen. Sending tokens on the wrong network can lose them permanently. If your exchange does not offer that network, use a bridge or a different provider rather than guessing.
{% endhint %}

A $2 to $5 top-up is plenty to start. Keys are $1.

## Card payments

Fiat deposits (paying by card, no crypto needed) are coming soon.

## Related

* [Add funds](/docs/wallet-and-store/add-funds.md)
* [The Store](/docs/wallet-and-store/the-store.md)
* [Withdrawals](/docs/wallet-and-store/withdrawals.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://size.club/docs/wallet-and-store/getting-usdc-for-the-first-time.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
