cccd_vn_validate $0.001 per call

Offline structural validator for a Vietnamese CCCD (Citizen Identity Card number, 12 digits). Parses the 3-digit province/overseas code, 1-digit century+gender indicator, 2-digit birth year, and 6-digit sequence, deriving full birth year and gender, and flags implausible province codes or birth years. No checksum digit exists in this scheme, so validation is structural only.

For AI agents: call cccd_vn_validate
POST https://toll402.dev/v1/t/cccd_vn_validate
{
 "id": "001204012345"
}
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": {
  "id": {
   "type": "string",
   "description": "12-digit Vietnamese CCCD number, spaces/dashes allowed"
  }
 },
 "required": [
  "id"
 ],
 "additionalProperties": false
}

MCP

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

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