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US ABA Routing Number Checksum Validator
x402
US ABA Routing Number Checksum Validator is a paid API for AI agents from x402.agentindex.world, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).
Validates a 9-digit US ABA bank routing number using checksum verification
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call tools for AI agents: web search + content, documents, live market data, and multi-chain wallet/gas reads. Mainnet test from $0.000001 USDC on Base. Pay-per-call tools for AI agents in USDC on Base (x402/MPP): search, pdf, web-read, extract, summarize, fact-check, translate, jobs, discover. See GET /capabilities.
Output
A validation result indicating whether the 9-digit ABA routing number passes the standard checksum algorithm, confirming if the number is structurally valid as a US bank routing number.
Example use cases
Pre-transfer routing number check
“Before I initiate this ACH payment, can you validate that routing number 122105155 is a legitimate US bank routing number?”
User-submitted bank form validation
“A customer just entered 026009593 as their bank routing number in our payment form — can you verify it passes the ABA checksum before we process it?”
Data cleanup for payroll records
“I have the routing number 111000025 in our payroll system and I'm not sure if it was entered correctly — can you run a checksum validation on it?”
Technical details
Endpoint
GEThttps://x402.agentindex.world/validate/routing?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, cheap checksum-level validation of a US ABA routing number before processing payments, storing bank details, or accepting user input — particularly in ACH, wire transfer, or payroll contexts. Prefer this over full bank lookup services when you only need structural validity and cost is a concern.
Side effects
- Non-9-digit input returns a pattern validation error
- Non-numeric characters cause rejection
- Missing routing_number parameter returns a 400 or schema error
- A structurally valid checksum does not guarantee the routing number is actively assigned to a bank — only that it is well-formed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true
}
}Tags
x402
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