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

# Introduction

> Trust Intelligence API for the Agent Economy

<img className="block dark:hidden" src="https://mintcdn.com/limitguard/Efjuc6j7dH_BcSrj/logo/light.svg?fit=max&auto=format&n=Efjuc6j7dH_BcSrj&q=85&s=2d92f02916bbaa076bb4bd0c47b54667" alt="LimitGuard" width="60" data-path="logo/light.svg" />

<img className="hidden dark:block" src="https://mintcdn.com/limitguard/Efjuc6j7dH_BcSrj/logo/dark.svg?fit=max&auto=format&n=Efjuc6j7dH_BcSrj&q=85&s=f27c3ee2736ce3f934a56a9b8d8c6f77" alt="LimitGuard" width="60" data-path="logo/dark.svg" />

# LimitGuard

**Real-time trust scoring for AI agents, businesses, and transactions.**
8 data sources. One API call. Verified on-chain.

LimitGuard is a Trust Intelligence API that lets AI agents and developers verify the trustworthiness of any business entity before transacting. We aggregate 8 independent data sources — business registries, sanctions lists, jurisdiction risk, domain intelligence, IBAN validation, VAT verification, wallet screening, and on-chain payment history — into a single trust score.

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Get your first trust score in under 3 minutes
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/introduction">
    Explore all 64 endpoints with interactive playground
  </Card>

  <Card title="Sandbox" icon="flask" href="/sandbox">
    Test for free — no wallet or API key required
  </Card>

  <Card title="x402 Protocol" icon="credit-card" href="/x402-protocol">
    Pay per call with USDC — no subscription needed
  </Card>
</CardGroup>

## Why LimitGuard?

AI agents transact billions daily without trust verification. There's no standard way for an agent to know if a counterparty is legitimate, sanctioned, or fraudulent before sending funds.

LimitGuard solves this with a single API call:

```bash theme={null}
curl -X POST https://api.limitguard.ai/v1/entity/check \
  -H "X-API-Key: lg_live_..." \
  -H "Content-Type: application/json" \
  -d '{"entity_name": "Acme Corp BV", "country": "NL", "kvk_number": "12345678"}'
```

```json Response theme={null}
{
  "trust_score": 87,
  "trust_level": "high",
  "cluster": "established_eu_sme",
  "recommendation": "proceed",
  "sources_checked": 8,
  "processing_time_ms": 247
}
```

## 8 Verification Layers

<CardGroup cols={4}>
  <Card title="KVK / CBE" icon="building">
    Dutch & Belgian business registry
  </Card>

  <Card title="Sanctions" icon="shield">
    OpenSanctions — 80+ global lists
  </Card>

  <Card title="Jurisdiction" icon="globe">
    CPI + FATF grey/blacklist
  </Card>

  <Card title="Domain" icon="link">
    WHOIS, DNS, SSL analysis
  </Card>

  <Card title="IBAN" icon="credit-card">
    Bank account validation
  </Card>

  <Card title="VAT / VIES" icon="file-invoice">
    EU VAT registration check
  </Card>

  <Card title="Wallet Risk" icon="wallet">
    ETH, BTC, SOL screening
  </Card>

  <Card title="x402 History" icon="clock-rotate-left">
    On-chain payment trust
  </Card>
</CardGroup>

## How It Works

<Steps>
  <Step title="Send entity data">
    POST the entity name, country, and any identifiers you have — KVK number, domain, IBAN, VAT, or wallet address.
  </Step>

  <Step title="8 parallel checks">
    LimitGuard queries all available data sources in parallel. Business registry, sanctions, jurisdiction, domain, financial, and on-chain — all in under 500ms.
  </Step>

  <Step title="Get trust score">
    Receive a trust score (0-100), risk level, entity cluster, and recommendation: **proceed**, **review**, **enhanced due diligence**, or **block**.
  </Step>
</Steps>

## Key Features

| Feature                 | Description                                                                |
| ----------------------- | -------------------------------------------------------------------------- |
| **Pay-per-use**         | No subscription required. Pay with USDC via x402 protocol.                 |
| **Sandbox mode**        | Test free with realistic mock data. No wallet needed.                      |
| **Three quality tiers** | Choose cached ($0.01), fresh ($0.05), or enhanced (\$0.15).                |
| **AI agent native**     | MCP, A2A, and x402 discovery. Agents find and use LimitGuard autonomously. |
| **GDPR compliant**      | Belgian entity, EU data residency, no PII stored beyond verification.      |
| **Self-verifying**      | LimitGuard verifies itself with its own API. Our score is public.          |

## Who Uses LimitGuard

* **AI agent developers** — Verify counterparties before autonomous transactions
* **Fintech platforms** — KYB and compliance checks via API
* **Crypto protocols** — Wallet screening and entity trust scoring
* **B2B marketplaces** — Supplier and buyer trust verification

<Card title="Ready to start?" icon="arrow-right" href="/quickstart">
  Get your first trust score in under 3 minutes
</Card>