bsn_nl_validate $0.001 per call

Offline validator for a Dutch BSN (Burgerservicenummer, citizen service number). Strips non-digit characters, pads 8-digit values with a leading zero to 9 digits, then applies the elfproef (eleven test): weights 9,8,7,6,5,4,3,2,-1 applied to the digits must sum to a multiple of 11, and the value must not be all zeros.

For AI agents: call bsn_nl_validate
POST https://toll402.dev/v1/t/bsn_nl_validate
{
 "bsn": "111222333"
}
Answers 402 with x402 payment requirements; pay with any x402 client (@x402/fetch, x402 for Python, toll402-client, toll402-mcp) or send a prepaid-credits key as x-toll402-key (https://toll402.dev/credits). Paid per call via x402 (USDC on Base) or with a prepaid-credits key (x-toll402-key, card at /credits); charged only on success. Start at /llms.txt or connect the MCP server: npx -y toll402-mcp · remote https://toll402.dev/mcp.

Input schema

{
 "type": "object",
 "properties": {
  "bsn": {
   "type": "string",
   "description": "BSN number, 8 or 9 digits, spaces/dots ignored"
  }
 },
 "required": [
  "bsn"
 ],
 "additionalProperties": false
}

MCP

{"mcpServers":{"toll402":{"command":"npx","args":["-y","toll402-mcp"],"env":{"TOLL402_WALLET_KEY":"0x..."}}}}

All tools · OpenAPI