Metadata Plus REST API not validating API keys

Incident Report for Crossref

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.
Posted Oct 05, 2026 - 16:25 UTC

Monitoring

A fix has been implemented and we are continuing to monitor the performance of the Metadata Plus pool.
Posted Oct 05, 2026 - 13:01 UTC

Update

We are continuing the investigate the outage. The Plus pool was down between 12:00 and 12:36 on 5 Oct, 2026.
Posted Oct 05, 2026 - 12:49 UTC

Update

The API is back up but we are still investigating and monitoring.
Posted Oct 05, 2026 - 12:41 UTC

Investigating

Request to the Metadata Plus pool of the REST API are receiving 401 responses (access denied). We are investigating the cause.
Posted Oct 05, 2026 - 12:21 UTC
This incident affected: Metadata Plus (Plus REST API).
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