hergertsynthora.com

https://routingcheck.hergertsynthora.com

● healthy general

Validate a US bank routing number (ABA) deterministically: 9-digit check, ABA mod-10 weighted checksum, Federal Reserve district decode and institution-id extraction. Zero external dependencies, no hallucination, always available. Use it to validate a US bank account before an ACH/wire payment. Complements IBAN validation for international. Ed25519-signed. 0.001 USDC on Base. First 3 calls FREE per wallet — send header X-WALLET: 0x<your Base address> (no payment); then per call. -- reliability

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -X POST https://routingcheck.hergertsynthora.com

/.well-known/x402.json

https://routingcheck.hergertsynthora.com/.well-known/x402