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

# Overview

> Portable trust infrastructure for apps, agents, and ecosystems.

NEUS makes trust portable across the internet. We issue **reusable trust receipts** that apps, agents, and payment layers check before access, payment, or action — so trusted actors do not restart from zero at every gate.

Verify once, get a **trust receipt**, then reuse it everywhere — at the next gate, app, or agent check.

Your trust context — identity, permission, and ownership — lives on your **NEUS profile** and travels with you across apps and agents. You control what is shared.

<Card title="How it fits together" icon="layer-group" href="./platform/trust-stack">
  Profiles, hosted sign-in, checks, gates, and agents — one stack.
</Card>

## Start in seconds

Two drop-in paths cover most products. Pick the one that matches what you are building.

<CardGroup cols={2}>
  <Card title="Add trust to an app" icon="puzzle-piece" href="./quickstart">
    Drop **`<VerifyGate>`** in front of any content and show status with **`<ProofBadge>`**. No verifier logic in your app.
  </Card>

  <Card title="Give an agent trust" icon="robot" href="./install">
    One command — `neus setup` — wires NEUS MCP into Cursor, Claude Code, Codex, or VS Code.
  </Card>
</CardGroup>

## What you can build

<CardGroup cols={2}>
  <Card title="Gate access or rewards" icon="door-open" href="./platform/hosted-gate-checkout">
    Verified-only content, drops, and member areas — with optional USDC or card checkout.
  </Card>

  <Card title="Portable trust profile" icon="shield-halved" href="./agents/overview">
    One URL that proves who you are, what you own, and what your agents may do — with receipts any gate can check.
  </Card>

  <Card title="Stop bots and sybils" icon="user-check" href="./cookbook/sybil-resistance">
    Proof of human and wallet-risk checks reused across your whole product.
  </Card>
</CardGroup>

## How every integration works

The same loop everywhere: **check → verify → save receipt → reuse**. See [Integration](./integration).

Advanced: [metered API billing (x402)](./platform/x402) · [Plans and credits](./platform/pricing)

## Build with

<CardGroup cols={3}>
  <Card title="Widgets" icon="square-check" href="./widgets/overview">
    `VerifyGate` and `ProofBadge` for React.
  </Card>

  <Card title="SDK" icon="code" href="./sdks/overview">
    Hosted links, polling, and server checks.
  </Card>

  <Card title="Hosted Verify" icon="key" href="./cookbook/auth-hosted-verify">
    Passkey, wallet, and OAuth on NEUS.
  </Card>

  <Card title="API" icon="terminal" href="./api/overview">
    Server reads and verification.
  </Card>

  <Card title="MCP" icon="plug" href="./mcp/overview">
    Live trust for assistants and agents.
  </Card>

  <Card title="Examples" icon="cube" href="./examples">
    Reference apps and samples.
  </Card>
</CardGroup>