Crossref Status
Metadata Plus REST API not validating API keys

Started

Resolved

Duration

4 hrs 3 min

Resolvedcritical impactVendor link
Affected:Plus REST API

Update timeline

Resolved

We have identified the problem due to a bug in a deployment. The deployment was reversed and the Plus pool of the API is working normally again.

Monitoring

A fix has been implemented and we are continuing to monitor the performance of the Metadata Plus pool.

Investigating

We are continuing the investigate the outage. The Plus pool was down between 12:00 and 12:36 on 5 Oct, 2026.

Investigating

The API is back up but we are still investigating and monitoring.

Investigating

Request to the Metadata Plus pool of the REST API are receiving 401 responses (access denied). We are investigating the cause.

Metadata Plus REST API not validating API keys — Crossref Incident Timeline & Status — DevHelm