awesome-copilot/skills/github-issues/references/labels.md

Labels

Labels are repository-scoped objects with a name, a color, and an optional description. Applying a label to an issue and creating a label are separate operations, so list a repository's labels before using them rather than assuming a name exists.

The gh label and gh issue commands act on the current repository; add --repo {owner}/{repo} to target another one. gh api has no --repo flag: it fills the {owner} and {repo} placeholders from the current repository, so set GH_REPO={owner}/{repo} or write the values into the path when working elsewhere.

The GitHub MCP server's label tools require the non-default labels toolset and cannot add or remove an individual label on an issue, so this reference uses the gh CLI throughout.

List Labels

gh label list returns only the first 30 labels. Always pass --limit when the result decides whether a label exists, or the answer will be wrong on any repository with a larger label set.

gh label list --limit 1000

Search names and descriptions, and return structured output:

gh label list --limit 1000 --search "triage"
gh label list --limit 1000 --json name,color,description --jq '.[] | "\(.name) (#\(.color))"'

Sort by name instead of creation order:

gh label list --limit 1000 --sort name --order asc

Create Label

Only the name is required. Color is six hex characters without a leading #; a random color is assigned when it is omitted. Description must be 100 characters or fewer.

gh label create "needs-triage" \
  --color FBCA04 \
  --description "Awaiting maintainer review"

Creating a label that already exists fails. Use --force to create it or update its color and description if it is already there, which makes seeding a label set repeatable:

gh label create "needs-triage" --color FBCA04 --force

Rename or Recolor Label

Send only what changes. --name sets the new name.

gh label edit "needs-triage" --name "triage"
gh label edit "triage" --color D93F0B --description "Awaiting maintainer review"

Delete Label

Deleting a label removes it from every issue and pull request that carries it. --yes is required when running without a prompt. Delete a label only when explicitly requested.

gh label delete "triage" --yes

Copy Labels Between Repositories

Clones the source repository's labels into the current one, skipping names that already exist. --force overwrites them instead.

gh label clone {owner}/{source-repo}

View an Issue's Labels

gh issue view {issue_number} --json labels --jq '.labels[].name'

Add Labels to an Issue

Adds to the labels already on the issue. Repeat the flag for several labels.

gh issue edit {issue_number} --add-label "bug" --add-label "needs-triage"

Remove Labels from an Issue

gh issue edit {issue_number} --remove-label "needs-triage"

Replace All Labels on an Issue

gh issue edit adds and removes but cannot replace the whole set. Use the API endpoint for that: PUT drops the existing labels and sets the ones supplied.

gh api repos/{owner}/{repo}/issues/{issue_number}/labels \
  -X PUT \
  -f 'labels[]=bug'

Remove All Labels from an Issue

gh api repos/{owner}/{repo}/issues/{issue_number}/labels -X DELETE

Default Labels

GitHub creates these labels in a new repository: accessibility, bug, documentation, duplicate, enhancement, good first issue, help wanted, invalid, question, wontfix.

Maintainers can rename or delete any of them, so check rather than assume. The isDefault field separates them from labels the repository added:

gh label list --limit 1000 --json name,isDefault --jq '.[] | select(.isDefault | not) | .name'

Usage Rules

• List the repository's labels before applying them, so the names used match the repository's existing taxonomy. Pass --limit when doing so; the default of 30 silently hides the rest.
• Create a label explicitly, with a color and description, rather than relying on a name appearing as a side effect of labelling an issue.
• Color is six hexadecimal characters with no leading #.
• Description must be 100 characters or fewer.
• Use --add-label and --remove-label to change part of an issue's labels. They leave the other labels intact.
• Replace an issue's whole label set only when replacement is explicitly requested. Read the current labels first, and prefer add and remove otherwise: PUT discards every label not named in the call.
• Label names are matched case-insensitively and stored with the case given.
• Quote label names that contain spaces.
• Pass --yes to gh label delete when running without a prompt, and ask before deleting: the label disappears from every issue that carries it.
• Prefer issue types over labels for categorization when the organization has issue types configured.