Operational Checked 2d ago

Check Digit Validator

com.gumballtools/check-digit

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

Latest observation

Status overview

Current statusOperationalNetwork, MCP handshake, and supported capability checks succeeded.

Latency865 msEnd-to-end protocol check

Protocol2026-07-28Modern flow

Tools discovered1Safe tools/list discovery only

Reliability

Auth-required and unknown checks are excluded.

Last 24 hours—Collecting comparable data

Last 7 days100%1 comparable checks · 865 ms average

Last 30 days100%1 comparable checks · 865 ms average

OperationalDegradedDownExcludedNewest on the left

Transparent checks

Network reachability

HTTPS endpoint and response timing.

Passed

MCP handshake

Modern discovery or legacy initialization.

Passed

Tools/list

Capability discovery without invoking any tool.

Passed

Events

No incidents recorded

An incident opens only after consecutive confirmed failures.

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