The Wayback Machine - https://web.archive.org/web/20210516030907/https://docs.github.com/en/sponsors/integrating-with-github-sponsors

Integrating with GitHub Sponsors

As an open source contributor, you can build custom tools to manage your GitHub sponsorships.

Configuring webhooks for events in your sponsored account→

You can configure webhooks to alert you when you receive new sponsorships or existing sponsors make changes to their sponsorships.

Using the GraphQL API, you can build custom integrations to manage or review your sponsorships.

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