rfc_validate $0.001 per call
Offline validator for a Mexican RFC (Registro Federal de Contribuyentes). Checks the format for persona física (4 letters + 6-digit date + 3-char homoclave) or persona moral (3 letters + 6-digit date + 3-char homoclave), verifies the embedded date is a real calendar date, and returns the parsed birth/incorporation date. Pure string/date logic, no network calls.
For AI agents: call rfc_validate
POST https://toll402.dev/v1/t/rfc_validate
{}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": {}
}
MCP
{"mcpServers":{"toll402":{"command":"npx","args":["-y","toll402-mcp"],"env":{"TOLL402_WALLET_KEY":"0x..."}}}}