# Strale KYB Complete UK

> Strale KYB Complete UK is a paid API for AI agents from api.strale.io, paid per call via x402, $2.7/call, status unknown (last checked 2026-09-15).

Performs a comprehensive Know Your Business (KYB) verification for UK companies, including Companies House registry lookup, VAT validation, and PEP screening for contact persons.

## Facts

- Endpoint: POST https://api.strale.io/x402/v2/solutions/kyb-complete-uk
- Price: $2.7/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-kyb-complete-uk-46d0332b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B4E8Ei9UkqjQldljk3rBs

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 strale-kyb-complete-uk-46d0332b -d '<json body>'
```

Example prompt: Can you run a full KYB check on the UK company with Companies House number 12345678, their domain is acmeltd.co.uk, contact is Jane Smith at jane@acmeltd.co.uk, and their VAT number is GB123456789?

## When to prefer this

Use this endpoint when you need a comprehensive, auditable KYB check specifically for UK-registered companies, covering registry data, VAT validation, and PEP screening in a single call with a cryptographic audit trail — particularly valuable for regulated industries requiring documented compliance records.

## Known failure modes

- Invalid or non-existent UK Companies House number returns a not-found error
- Malformed VAT number format causes validation failure
- Contact name not found in PEP databases returns a clean result rather than an error
- Domain not resolvable may reduce enrichment confidence
- Rate limiting or payment failure via x402 causes HTTP 402 response

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns a structured KYB report including Companies House registry data, VAT number validation status, PEP screening outcome for the named contact, and a cryptographically signed audit record with chain hashing for compliance traceability.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ]
    },
    "bodyType": {
     "type": "string",
     "enum": [
      "json",
      "form-data",
      "text"
     ]
    },
    "body": {
     "type": "object",
     "required": [
      "company_number"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Company website domain (e.g., example.com)"
      },
      "vat_number": {
       "type": "string",
       "description": "EU VAT number with country prefix (e.g. DE811128135). Auto-derived from registry data when possible."
      },
      "contact_name": {
       "type": "string",
       "description": "Name of contact person for PEP screening"
      },
      "contact_email": {
       "type": "string",
       "description": "Contact email for validation"
      },
      "company_number": {
       "type": "string",
       "description": "UK Companies House number"
      }
     }
    }
   },
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "additionalProperties": false
  }
 },
 "required": [
  "input"
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-kyb-complete-uk-46d0332b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)