Deletes a specified code scanning analysis from a repository. For private repositories, you must use an access token with the repo scope. For public repositories, you must use an access token with public_repo scope. GitHub Apps must have the security_events write permission to use this endpoint.

You can delete one analysis at a time. To delete a series of analyses, start with the most recent analysis and work backwards. Conceptually, the process is similar to the undo function in a text editor.

When you list the analyses for a repository, one or more will be identified as deletable in the response:

"deletable": true

An analysis is deletable when it's the most recent in a set of analyses. Typically, a repository will have multiple sets of analyses for each enabled code scanning tool, where a set is determined by a unique combination of analysis values:

ref
tool
category

If you attempt to delete an analysis that is not the most recent in a set, you'll get a 400 response with the message:

Analysis specified is not deletable.

The response from a successful DELETE operation provides you with two alternative URLs for deleting the next analysis in the set: next_analysis_url and confirm_delete_url. Use the next_analysis_url URL if you want to avoid accidentally deleting the final analysis in a set. This is a useful option if you want to preserve at least one analysis for the specified tool in your repository. Use the confirm_delete_url URL if you are content to remove all analyses for a tool. When you delete the last analysis in a set, the value of next_analysis_url and confirm_delete_url in the 200 response is null.

As an example of the deletion process, let's imagine that you added a workflow that configured a particular code scanning tool to analyze the code in a repository. This tool has added 15 analyses: 10 on the default branch, and another 5 on a topic branch. You therefore have two separate sets of analyses for this tool. You've now decided that you want to remove all of the analyses for the tool. To do this you must make 15 separate deletion requests. To start, you must find an analysis that's identified as deletable. Each set of analyses always has one that's identified as deletable. Having found the deletable analysis for one of the two sets, delete this analysis and then continue deleting the next analysis in the set until they're all deleted. Then repeat the process for the second set. The procedure therefore consists of a nested loop:

Outer loop:

List the analyses for the repository, filtered by tool.
Parse this list to find a deletable analysis. If found:

Inner loop:
- Delete the identified analysis.
- Parse the response for the value of confirm_delete_url and, if found, use this in the next iteration.

The above process assumes that you want to remove all trace of the tool's analyses from the GitHub user interface, for the specified repository, and it therefore uses the confirm_delete_url value. Alternatively, you could use the next_analysis_url value, which would leave the last analysis in each set undeleted to avoid removing a tool's analysis entirely.

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