# LimitGuard KYB Check

> LimitGuard KYB Check is a paid API for AI agents from limitguard.ai, paid per call via x402, $1.5/call, status unknown (last checked 2026-10-10).

Verifies a business entity by checking company registration, sanctions screening, VAT/VIES validation, and domain analysis in a single API call.

## Facts

- Endpoint: POST https://limitguard.ai/v1/kyb/check?utm_source=zero.xyz
- Price: $1.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/limitguard-kyb-check-b0b37714
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pcmNBWfrBCoU0wDdYOFjw

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability limitguard-kyb-check-b0b37714 -d '<json body>'
```

Example prompt: Can you run a KYB check on Acme GmbH — their registration number is HRB123456, they're based in Germany (DE), their VAT number is DE123456789, and their website is acme-gmbh.de? I need to know if they're sanctions-clear and their registration is valid before we sign a contract.

## When to prefer this

Choose this endpoint when you need a fast, multi-signal business verification in a single call — combining registration lookup, sanctions screening, and VAT validation simultaneously. Prefer this over individual registry lookups when you need a consolidated trust score for onboarding, contract signing, or inter-business transactions, especially in the EU/European context where VIES VAT validation is relevant.

## Known failure modes

- Invalid or unrecognized country code returns a validation error
- Registration number not found in target country registry returns unverified status
- VAT number format mismatch or VIES service unavailable causes vat_valid to be null or false
- Missing required fields (entity_id, registration_number, country) returns 400 Bad Request
- Payment failure (insufficient USDC balance) returns 402 Payment Required
- Rate limiting or downstream registry downtime may cause timeout or 503 errors

## How this service works

Know Your Business verification: company registration, sanctions screening, VAT/VIES, and domain analysis in one call.

## Output

Returns a JSON object with verified (boolean), registration_valid (boolean), sanctions_clear (boolean), vat_valid (boolean), and trust_score (0-100 integer) indicating the overall compliance trustworthiness of the business entity.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "required": [
    "entity_id",
    "registration_number",
    "country"
   ],
   "properties": {
    "domain": {
     "type": "string",
     "description": "Company domain for web presence check"
    },
    "country": {
     "type": "string",
     "description": "ISO 3166-1 alpha-2 country code"
    },
    "entity_id": {
     "type": "string",
     "description": "Internal entity identifier"
    },
    "vat_number": {
     "type": "string",
     "description": "VAT number for VIES verification"
    },
    "entity_name": {
     "type": "string",
     "description": "Legal entity name (optional)"
    },
    "registration_number": {
     "type": "string",
     "description": "Company registration number"
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  },
  "sandbox": {
   "type": "object",
   "required": [
    "url"
   ],
   "properties": {
    "url": {
     "type": "string"
    },
    "curl": {
     "type": "string"
    },
    "note": {
     "type": "string"
    }
   }
  },
  "recovery": {
   "type": "object",
   "required": [
    "url"
   ],
   "properties": {
    "url": {
     "type": "string"
    },
    "curl": {
     "type": "string"
    }
   }
  },
  "documentation_url": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {
  "verified": true,
  "vat_valid": true,
  "trust_score": 91,
  "sanctions_clear": true,
  "registration_valid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/limitguard-kyb-check-b0b37714/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from limitguard.ai](https://www.zero.xyz/host/limitguard.ai/llms.txt)