Crossref Event Data API removal
Stopped workingSubscribe to Crossref Event Data APIShare
The Event Data API stopped working on April 23, 2026. Calls to api.eventdata.crossref.org fail since that date. The public service was sunset, leaving the endpoint permanently inactive.
What to use instead of these calls
Remove calls to the Event Data API. There is no replacement API, so tracking new events requires another source or removing the feature. Past events collected by Crossref remain available through a static repository linked from the deprecation notice.
No replacement API: new events need another source, or the feature goes.
In Crossref Event Data API's words
The Event Data public API was sunset on 23 April 2026.
Facts
- API
- Crossref Event Data API
api.eventdata.crossref.org - Kind
- Removal
- Takes effect
- April 23, 2026
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
- Verified
- , against Crossref Event Data API's own pages
Questions
When does this change take effect?
Calls to the Event Data API on Crossref Event Data API stopped working on April 23, 2026.
What happens to calls after April 23, 2026?
They have failed since April 23, 2026.
How do I find the calls this hits in my code?
Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.
You fixed this one by hand.
Okapi opens the pull request with the fix before the next breaking change reaches your code.