Offline IBAN/BIC/EU VAT/card/ISBN/GTIN validators + live USD stablecoin peg-health verdict.
Streamable HTTP
https://identifier-validator-api.yuechenxi-importexport.workers.dev/mcpclaude mcp add --transport http identifier-validator https://identifier-validator-api.yuechenxi-importexport.workers.dev/mcpThis server publishes no installable package.