> ## Documentation Index
> Fetch the complete documentation index at: https://docs.usefloat.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> One balance. Every agent. Zero paywalls.

## What is Float?

Your AI agents keep hitting paywalls. You keep stopping to intervene. Float fixes that.

Load USDC once. Float gives each of your agents a wallet, a budget, and the ability to pay for any API automatically — without stopping, without asking, without you.

No API key juggling. No paywalls mid-task. No manual wallet management.

```
you → load USDC → Float treasury
                     ↓
              agent gets a wallet + budget
                     ↓
    agent calls paid API → x402 payment → done
```

## Who is it for?

Float is built for **vibe coders** — people running Claude Code, Codex, or Cursor all day, building with AI agents that need to call real APIs, generate images, and access live data.

Without Float: your agents hit a paywall, stop, and wait for you to intervene.\
With Float: they keep going.

## How it works

<Steps>
  <Step title="Install the Float MCP">
    Add Float to Claude Code in one command. Your agent can now call Float tools natively.

    ```bash theme={null}
    claude mcp add float -- npx -y @usefloat/mcp@latest
    ```
  </Step>

  <Step title="Link your machine">
    Run `npx @usefloat/cli@latest init` to sign in and link your agent. Float provisions a Solana wallet automatically.
  </Step>

  <Step title="Load USDC">
    Open the [Float dashboard](https://app.usefloat.xyz/fund) and deposit USDC. Fiat on-ramp (card → USDC) is built in.
  </Step>

  <Step title="Let agents run">
    Your agents can now pay for any x402-compatible API automatically, within the spending limits you set.
  </Step>
</Steps>

## Key concepts

<CardGroup cols={2}>
  <Card title="x402 Protocol" icon="bolt" href="/concepts/x402">
    The HTTP payment standard Float uses. Agents probe, pay, and resubmit — all automatically.
  </Card>

  <Card title="Treasury model" icon="wallet" href="/concepts/treasury">
    One USDC balance, many agents. Each agent has its own wallet and daily budget drawn from your treasury.
  </Card>

  <Card title="Float MCP" icon="plug" href="/mcp/overview">
    Native tools for Claude Code, Cursor, and Codex. Agents call Float without leaving the terminal.
  </Card>

  <Card title="Agent wallets" icon="key" href="/concepts/agent-wallets">
    Server-managed Solana wallets. No key management required — Float handles signing.
  </Card>
</CardGroup>