in cursor input ``` { "base": "main", "head": "my-branch", "owner": "owner", "repo": "my-repo", "title": "Fix AttributeError", "body": "..." } ``` output ``` {"error":"MCP error -32603: failed to create pull request: POST https://api.github.com/repos/my-repo/pulls: 422 Validation Failed [{Resource:PullRequest Field:base Code:invalid Message:}]"} ```