The Git Signing APIs are now part of the official GitHub REST API v3. Signature verification metadata will now be included in commit and tag payloads, and user GPG keys can be created, destroyed, and fetched.
Preview media type no longer required
If you used the Git Signing API during the preview period, you needed to provide this custom media type in the Accept header:
As of today, you no longer need to pass this custom media type. Instead, we recommend that you specify v3 as the version in the Accept header:
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If you have any questions or feedback, please let us know.