fix(labels): add DestructiveHint to label_write tool#2763
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The label_write delete method removes labels repository-wide but the tool only advertised ReadOnlyHint:false. Set DestructiveHint:true so MCP clients can warn before destructive label deletions, matching projects_write. Fixes github#2723 Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
Add
DestructiveHint: trueto thelabel_writetool annotations so MCP clients can surface appropriate warnings before repository-wide label deletions.Motivation
The
label_writetool supportscreate,update, anddeletemethods. Thedeletemethod permanently removes a label and all of its associations from every issue and PR in the repository. The tool currently only setsReadOnlyHint: false, giving clients no destructive-operation signal.Deleting a label removes it repository-wide from all issues and pull requests (GitHub API permanent delete).
Fixes #2723
Rationale
label_writeis a multi-method tool (create/update/delete). MCP tool annotations are tool-scoped (no per-method hints), so we mark the entire tooldestructiveHint: truewhen any method is destructive—matchingprojects_writeanddiscussion_comment_write.Changes
DestructiveHint: jsonschema.Ptr(true)onlabel_writeinpkg/github/labels.gopkg/github/labels_test.golabel_writetoolsnapTests
go test ./pkg/github -run 'TestWriteLabel' -count=1 -v— PASSImpact
Hosts/clients may show destructive-operation warnings for all
label_writecalls, including create/update. This is intentional conservative labeling.