Assign or unassign a milestone with assign_milestone

Goal: attach an issue to a milestone, or remove its milestone.

Prerequisites

• Both the issue and (if assigning) the milestone already exist.

Steps

1. To assign:

   {
     "owner": "your-org",
     "repo": "your-repo",
     "issueNumber": 101,
     "milestoneNumber": 3
   }

2. To unassign, pass null for milestoneNumber:

   {
     "owner": "your-org",
     "repo": "your-repo",
     "issueNumber": 101,
     "milestoneNumber": null
   }

3. Read the response: { issueNumber, milestoneNumber } (echoing what you set, including null on unassign).

Verify it worked

• Reload the issue and confirm the milestone shown in the sidebar matches (or is cleared, for an unassign).

See also: tool reference.