# x402-farm French KYB Verification

> x402-farm French KYB Verification is a paid API for AI agents from x402-farm.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Validates a French company's SIREN number and checks VAT compliance status via VIES, returning a CONFORME/non-CONFORME verdict.

## Facts

- Endpoint: GET https://x402-farm.vercel.app/v1/fr/kyb
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-farm-french-kyb-verification-0857d39a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NEBaV2THWKDNPnldMClqb

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 x402-farm-french-kyb-verification-0857d39a
```

Example prompt: Can you run a KYB check on French company with SIREN 306138900 and tell me if they're VAT-compliant and fiscally in order?

## When to prefer this

Use this endpoint when you need a lightweight, no-account pay-per-call KYB check specifically for French companies, particularly when you need VIES VAT validation combined with SIREN verification in a single call. Prefer this over building custom registry integrations when cost-per-query economics work at $0.10 USDC and you want a ready-made compliance verdict.

## Known failure modes

- Invalid or non-existent SIREN number returns an error or non-CONFORME verdict
- VIES service temporarily unavailable causes validation failure
- Malformed query parameters result in 400 Bad Request
- Payment failure (insufficient USDC) results in 402 Payment Required before any data is returned
- Rate limiting or network timeouts on external registry lookups

## How this service works

Pay-per-call APIs for AI agents — x402 protocol, USDC on Base, no account needed.

## Output

Returns a JSON object with the company SIREN, fiscal compliance details including whether TVA is validated via VIES, and an overall verdict string — either CONFORME (compliant) or a non-compliant status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "siren": "306138900",
  "fiscal": {
   "tva_validee_vies": true
  },
  "verdict": "CONFORME"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-farm-french-kyb-verification-0857d39a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-farm.vercel.app](https://www.zero.xyz/host/x402-farm.vercel.app/llms.txt)