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OCLC Support

Why am I receiving an 'Unauthorized' error when I try and access the WorldCat Search API v2 using our V1 key?

Applies to
  • WorldCat Discovery
  • WorldCat Search API

In v1, you put your key into the end of a URL:

In v2, you will need to use an access token. You can obtain one by following the directions on the OCLC Developer Network Access Tokens page.

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