Bug

Turn a description of something broken into a GitHub issue of type Bug. It drafts the report from what the user gives (plus repo context), shows it for approval, and only then files the issue — typed Bug where the repo supports issue types, otherwise labelled bug.

It never opens an issue without confirmation and never invents reproduction steps or facts the user did not provide; unknowns are marked as such.

Contract

Inputs:

• A description of the bug (free text, an error/stack trace, or a title plus details)
• The target repository (auto-detected from the current directory's remote)
• Optional: labels, assignee, milestone, or severity the user specifies

Outputs:

• A structured bug report (title + body) shown before anything is created
• Whether the issue will be typed Bug or labelled bug (and why)
• The created issue number and URL

Creates/Modifies:

• Creates one GitHub issue of type Bug (or with the bug label) via gh
• Applies only the labels/assignee/milestone the user asked for
• Creates the bug label if it is used as a fallback and does not yet exist
• Does not edit code, close other issues, or modify repository settings

External Side Effects:

• Reads repository, label, and issue-type metadata from GitHub
• Creates a GitHub issue (visible to everyone with repo access)

Confirmation Required:

• Before creating the issue — always print the drafted title + body and require an explicit yes
• Before creating a new bug label (fallback path), if one does not already exist

Delegates To:

• github-fix-ci when the bug is a failing CI check the user wants fixed instead of filed
• debug when the user wants to root-cause before filing (it escalates to systematic-debugging on its own when a fix attempt has already failed)

When to Use

• To file a clean bug report from a rough description or an error message
• To log a bug found mid-session without leaving the terminal
• When the user says "open a bug", "file this", "create a bug issue", or runs /bug

Do not use this skill to fix the bug, to file feature requests or tasks (those are a different issue type), or to triage existing issues.

Phase 1: Repository and Type Detection

gh auth status -h github.com
gh repo view --json nameWithOwner,hasIssuesEnabled --jq '{repo:.nameWithOwner, issues:.hasIssuesEnabled}'

Stop if issues are disabled. Detect whether the repo's owner defines issue types and whether a Bug type exists:

gh issue create --help | grep -q -- '--type' && echo "type-flag: supported"
gh api "repos/{owner}/{repo}" --jq '.owner.type' 2>/dev/null

Decide the path:

• Bug issue type — preferred when the org/repo exposes a Bug type. Use --type Bug.
• bug label — fallback when no issue types exist. Check for the label and plan to create it only if needed:

gh label list --search bug --json name --jq '.[].name'

Phase 2: Draft the Bug Report

Structure the report from what the user gave. Keep it factual — never fabricate steps, versions, or behavior. Mark anything unknown as _not provided_.

Title: a short, specific summary of the symptom (not "bug" or "it's broken").

Body (omit sections that genuinely do not apply):

## Summary
<one or two sentences: what is broken>

## Steps to Reproduce
1. …
2. …

## Expected
<what should happen>

## Actual
<what happens instead — include the error/stack trace verbatim if provided>

## Environment
<app/service, version or commit, OS/browser, anything relevant — or _not provided_>

## Notes
<links, related issues, suspected area — only if the user gave them>

If the user pasted a stack trace or error, quote it verbatim in a fenced block under Actual. Ask one concise follow-up only if the report is unusable without it (e.g. no symptom at all); otherwise draft with what you have and mark gaps.

Phase 3: Preview and Confirm

Print the full drafted issue — title, body, the type/label decision, and any labels/assignee/milestone to apply — then stop and wait for an explicit yes. In a read-only or dry-run request, end here and file nothing.

Phase 4: Create the Issue

Only after confirmation, write the body under the current repo's .tmp/ (to preserve formatting) and create the issue.

Preferred — Bug issue type:

REPO_TMP="$(git rev-parse --show-toplevel)/.tmp"
mkdir -p "$REPO_TMP"
gh issue create --title "<title>" --body-file "$REPO_TMP/bug_body.md" --type Bug

Fallback — bug label (create the label first only if it is missing and the user agreed):

gh label create bug --color d73a4a --description "Something isn't working" 2>/dev/null || true
gh issue create --title "<title>" --body-file "$REPO_TMP/bug_body.md" --label bug

Add --assignee, --label, --milestone, or --project only for values the user specified. If --type Bug fails because the type does not exist, fall back to the label path and say so rather than failing the run.

Modes

• bug / bug <description> — Phases 1-4. Draft, confirm, file the issue. (Default.)
• bug draft — Phases 1-3. Draft and print the report only; create nothing.

If the user names labels, an assignee, a milestone, or a severity, honor them. If they ask for a feature or task instead of a bug, say this skill files bugs and point them to the right issue type.

Final Status

Report:

• The repository and whether the issue was typed Bug or labelled bug
• The created issue number and URL
• Any labels, assignee, or milestone applied
• What to do next — e.g. root-cause with debug, or fix a failing check with github-fix-ci