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Bitly API v4

REST discovered

Details
URL
https://api-ssl.bitly.com/v4
Docs
https://dev.bitly.com/api-reference/
Authentication
Bitly API access token bearer discovered Get token ↗

Log in to Bitly, open API settings, enter your Bitly account password, and click Generate token. Copy the token and send it as Authorization: Bearer {token}. Bitly's support article with step-by-step instructions is here.