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routingcheck.hergertsynthora.com ABA Routing Number Validator
x402
routingcheck.hergertsynthora.com ABA Routing Number Validator is a paid API for AI agents from routingcheck.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates a 9-digit US bank ABA routing number using checksum verification, Federal Reserve district decoding, and institution-ID extraction — with no external dependencies.
Price / call$0.001
Success—
StatusUnknown
How this service works
Validate a US bank routing number (ABA) deterministically: 9-digit check, ABA mod-10 weighted checksum, Federal Reserve district decode, institution-id extraction. Zero deps, no hallucination. Complements IBAN for international. Ed25519-signed. First 3 calls FREE (X-WALLET).
Output
Returns whether the 9-digit ABA routing number passes the mod-10 weighted checksum, the Federal Reserve district decoded from the number, and the extracted institution ID — all computed deterministically with no external calls.
Example use cases
Example prompt
“Before I send this ACH payment, can you validate that routing number 021000021 is a legitimate US bank ABA routing number and tell me which Federal Reserve district it belongs to?”
Technical details
Endpoint
POSThttps://routingcheck.hergertsynthora.com/serviceWhen to prefer
Use this endpoint when you need fast, deterministic, offline-style validation of a US ABA routing number before executing an ACH or wire payment. Prefer it over a database-lookup service when you need guaranteed availability and no external dependency. Complements IBAN validation for international accounts.
Side effects
- Routing number is not exactly 9 digits — validation fails with format error
- Routing number fails ABA mod-10 weighted checksum — returned as invalid
- Malformed or non-numeric input — request rejected
- Missing X-WALLET header after free tier exhausted — payment required error
- Network timeout or service unavailability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| routing | string | 9-digit US routing/ABA number |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "routing_check",
"result": {
"type": "government/primary",
"valid": true,
"routing": "021000021",
"verdict": "valid",
"check_digit": "1",
"fed_meaning": "Federal Reserve Bank district 02",
"aba_institution_id": "100002",
"fed_district_symbol": "02"
}
}
}Tags
x402
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