MCP servercom.gumballtools/check-digit

Validates IBAN/ISBN/EAN/Luhn checksums and finds the one wrong digit

UNRATEDActivestreamable-httpcheck-digit.gumballtools.com

Overview

Score?

UNRATED 0.638

of what a free look can see, on 24 looks

Looks

last 11 hr ago

Tools

More info

URL

check-digit.gumballtools.com/api/mcp

streamable-http

Says it is

check-digit 0.1.0

protocol 2025-06-18

In the record since

28 days ago

Among servers18,413 with a card

0median 0.606 · this server 0.638 · highest on record 0.8561

Toolsfrom sha256:79fb455cd6…09b70d

The tools this server lists, read out of the definition it returned
Tool	Schema
run Validate the check digit(s) on an IBAN, ISBN-10, ISBN-13, EAN-13, UPC-A, or Luhn-checked card number, and when it fails, try to say which digit is wrong. Use this instead of compu	input · no output

Verify it yourselfnpx teppi-check https://check-digit.gumballtools.com/api/mcpcurl -s https://api.teppi.xyz/v1/trust/mcp/mcs_01M1TM8WRBGK66SN8JARA9N7J9