# token on /api/v1/* stops working

Calls to /api/v1/*, query parameter token on sevdesk API stopped working on April 29, 2025.

On April 29, 2025, sevdesk API will disable authentication using the query parameter token across all /api/v1/* endpoints. The provider announced it will remove the mechanism to pass this credential in the URL. Requests that rely on this parameter after this date will fail.

## What to use instead

Send the API token in the Authorization header instead of the token query parameter.

- API: sevdesk API (my.sevdesk.de)
- Kind: Behaviour change
- Announced: February 6, 2025
- Takes effect: April 29, 2025
- Calls after that day: fail
- Calls it hits: `/api/v1/*`, `query parameter token`
- Source: [Announcement](https://tech.sevdesk.com/api_news/posts/2025_02_06-authentication-method-removed/)
- Verified: October 26, 2026, against sevdesk API's own pages
- Page: https://www.okapi.bot/providers/sevdesk-api/breaking-changes/token-on-api-v1-stops-working/

## sevdesk API's words

> we will remove the mechanism to pass the API token as a URL request parameter to authenticate at any sevDesk API endpoint.

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent