aba-routing-validate

Installation
SKILL.md

ABA routing number validation

aba.routing-validate on https://fittings.sh. One endpoint, finance and markets.

Validate a US ABA routing number by its 3-7-1 check digit and decode its Federal Reserve district and institution class.

The call

GET https://fittings.sh/v1/aba/routing-validate
Field Type Required Notes
routingNumber string yes 9-digit ABA routing transit number

Example input:

Installs
3
First Seen
Aug 18, 2026