Imported from CodySwannGT/lisa (plugins/lisa/skills/lisa-github-read-issue/SKILL.md). Install upstream with npx skills add CodySwannGT/lisa --skill lisa-github-read-issue. Copyright stays with the author.

Read GitHub Issue: $ARGUMENTS

Fetch the full scope of the issue AND its related graph. Downstream agents must never act on an issue in isolation — always call this skill first so they see blockers, sibling sub-issues, linked PRs, and historical comments.

This skill is the GitHub counterpart of lisa-jira-read-ticket. The output bundle structure mirrors the JIRA bundle so vendor-neutral consumers can parse either with minimal branching.

Repository name for scoped comments and logs: basename $(git rev-parse --show-toplevel).

Phase 1 — Resolve Context

1. Confirm gh auth status succeeds.

2. Parse $ARGUMENTS. Accept either:

   • <org>/<repo>#<number> token, OR
   • https://github.com/<org>/<repo>/issues/<number> URL.

   If $ARGUMENTS is just #<number> or <number>, resolve <org>/<repo> from .lisa.config.json (github.org / github.repo).

3. If the input doesn't parse cleanly, stop and report. Do NOT guess.

Phase 2 — Fetch Primary Issue

gh issue view <number> --repo <org>/<repo> --json number,title,body,state,stateReason,author,assignees,labels,milestone,createdAt,updatedAt,closedAt,url,comments,reactionGroups,projectItems

Extract and preserve:

Metadata

• number, title, state (open/closed), stateReason (completed/not_planned/reopened/null)
• author (immutable original reporter), assignees
• All labels — partition by namespace: type:<...> (issue type), status:<...> (workflow status), priority:<...>, component:<...>, points:<...>, fix-version:<...>, claude-triaged-<repo>, plus any free-form labels
• milestone (name + url)
• createdAt, updatedAt, closedAt
• url (canonical issue URL)

Body — parse markdown sections

Walk the markdown body and capture each top-level ## section by name. Standard sections (per lisa-github-write-issue Phase 3):

• Context / Business Value
• Technical Approach
• Acceptance Criteria (preserve the Gherkin code-fence verbatim)
• Out of Scope
• Target Backend Environment
• Branch Plan (derived output per derived-branch-plan — parsed so callers can compare it against a recomputation, never so they can use it as the base branch)
• Sign-in Required
• Repository
• Source Artifacts
• Source Precedence
• Links
• Relationship Search
• Validation Journey (preserve verbatim — pass through to verifier agents)
• Open Questions
• Current Product

Any other ## section: capture under extra_sections so callers can see PRDs that adopt non-standard sections.

Comments

Fetch ALL comments. Do not truncate. The comments field from gh issue view --json comments includes author, body, createdAt for each. Flag comments that contain:

• Credentials, reproduction steps
• Status updates from stakeholders
• Decisions
• Triage headers like [<repo>]

If pagination matters (issues with hundreds of comments), use gh api repos/<org>/<repo>/issues/<number>/comments --paginate to get the full set.

Phase 3 — Fetch Sub-issue Graph (Parent + Children)

GitHub native sub-issues are exposed via GraphQL:

query($org:String!,$repo:String!,$number:Int!){
  repository(owner:$org,name:$repo){
    issue(number:$number){
      id
      parent { number title state url repository { nameWithOwner } }
      subIssues(first: 100) {
        nodes {
          number title state url
          repository { nameWithOwner }
          labels(first: 50) { nodes { name } }
          assignees(first: 5) { nodes { login } }
        }
      }
    }
  }
}

gh api graphql -f query='<above>' -F org=<org> -F repo=<repo> -F number=<number>

Capture:

• Parent sub-issue: number, title, state, url, repo.
• Child sub-issues: list with number, title, state, url, repo, labels (especially type: and status:), assignees.

If the GraphQL parent / subIssues fields aren't available (older GHES), fall back to parsing Parent: #<n> text in the body and recording sub-issue text references — note "GraphQL sub-issues unavailable" in the bundle so callers know parent-link is text-based.

Phase 4 — Parse Issue Links from Body

The body's ## Links section encodes typed relationships. Parse:

For each parsed reference, fetch the linked issue/PR:

gh issue view <link-number> --repo <link-org>/<link-repo> --json number,title,state,labels,assignees,url
gh pr view <link-number> --repo <link-org>/<link-repo> --json number,title,state,reviewDecision,merged,mergedAt,url,reviewRequests,reviews,comments

For each linked issue, capture: number, title, state, type (from labels), status (from labels), assignees, url.

For each linked PR, capture: number, title, state, mergedAt, reviewDecision, unresolved review comments, url.

Special handling for is blocked by: include the linked issue's PR refs (parse Resolves lines in its body) and fetch each PR's state, so the agent knows whether the blocker is actually shipped.

Phase 5 — Fetch Sibling Sub-issues (Epic Context)

If the primary issue has a parent sub-issue (i.e., is a Story / Task / Sub-task / Improvement under an Epic):

1. Fetch the parent Epic in full via Phase 2 logic — full body, all comments, Validation Journey if present.
2. Fetch the parent Epic's other sub-issues (siblings) via the same GraphQL subIssues query against the parent. Filter out the primary issue itself.
3. For each sibling, capture: number, title, type label, status label, assignee, url. Read the first paragraph of each sibling's body for context. If a sibling has status:in-progress with an assignee different from the primary issue's assignee, flag prominently so the caller can avoid duplicate work.

If the primary issue IS an Epic, capture all children via Phase 3's subIssues traversal (already done).

Phase 6 — Fetch Linked PRs and Label-Event History

GitHub's native closingIssuesReferences and timeline give the canonical PR↔Issue relationship. The same timeline read also exposes label events, which are Lisa's GitHub-native transition history. Keep this as one GraphQL read path; do not add a second REST timeline fetch.

query='query($org:String!,$repo:String!,$number:Int!,$cursor:String){
  repository(owner:$org,name:$repo){
    issue(number:$number){
      closedByPullRequestsReferences(first:50){
        nodes{number title state merged mergedAt url repository{nameWithOwner}}
      }
      timelineItems(
        first:100
        after:$cursor
        itemTypes:[CROSS_REFERENCED_EVENT,LABELED_EVENT,UNLABELED_EVENT]
      ){
        pageInfo{hasNextPage endCursor}
        nodes{
          ...on CrossReferencedEvent{
            createdAt
            actor{login}
            source{...on PullRequest{number title state url repository{nameWithOwner}}}
          }
          ...on LabeledEvent{
            createdAt
            actor{login}
            label{name}
          }
          ...on UnlabeledEvent{
            createdAt
            actor{login}
            label{name}
          }
        }
      }
    }
  }
}'

cursor=null
while :; do
  if [ "$cursor" = null ]; then
    page=$(gh api graphql -f query="$query" -F org=<org> -F repo=<repo> -F number=<number>)
  else
    page=$(gh api graphql -f query="$query" -F org=<org> -F repo=<repo> -F number=<number> -f cursor="$cursor")
  fi
  printf '%s\n' "$page"
  has_next=$(printf '%s\n' "$page" | jq -r '.data.repository.issue.timelineItems.pageInfo.hasNextPage')
  cursor=$(printf '%s\n' "$page" | jq -r '.data.repository.issue.timelineItems.pageInfo.endCursor')
  [ "$has_next" = true ] || break
done

Capture:

• Linked PRs: PR number, title, state, mergedAt, repo, url. Dedupe with PRs found in Phase 4. Preserve the existing CrossReferencedEvent behavior for PR linkage; widening the query must not change that consumer shape.
• Label-event history: chronological LabeledEvent and UnlabeledEvent entries with event kind, label name, actor login, and createdAt. Preserve oldest→newest order across all pages. Status labels (status:*) are the GitHub transition history that downstream rejection detection consumes, but keep non-status label events too so callers can audit the full label stream.

Pagination is mandatory. timelineItems(first:100) silently truncates busy issues unless pageInfo.hasNextPage / endCursor is followed. If a page fetch fails, record label-event history as unknown with the error and continue assembling the bundle; a history read failure must never block the build.

For each PR, fetch unresolved review comments via gh pr view <num> --repo <org>/<repo> --json reviews,reviewThreads.

Phase 7 — Assemble Context Bundle

Produce a single structured output that the caller can pass verbatim to downstream agents. Use this format:

# Issue Context: <org>/<repo>#<number>

## Primary Issue
- Ref: <org>/<repo>#<number>
- URL: <url>
- Type: <type from `type:` label>
- Status: <status from `status:` label>
- State: <open|closed> (<stateReason>)
- Priority: <priority from `priority:` label>
- Author: <login>
- Assignees: <list>
- Parent: <parent-ref> — <parent-title>  (or "None")
- Milestone: <name>  (or "None")
- Labels: <comma-separated raw labels>
- Components: <list from `component:` labels>
- Story points: <n from `points:` label>  (or "None")
- Fix version: <from `fix-version:` label or milestone>
- Created: <ISO> | Updated: <ISO> | Closed: <ISO or "—">

### Body sections
#### Context / Business Value
<verbatim>

#### Technical Approach
<verbatim>

#### Acceptance Criteria
<verbatim, including the gherkin fence>

#### Validation Journey
<verbatim or "None">

#### Out of Scope
<verbatim>

#### Source Artifacts / Source Precedence / Links / Relationship Search / Repository / Sign-in Required / Target Backend Environment / Open Questions / Current Product
<each verbatim, omit those not present>

### Comments (<count>)
<chronological comments with author + ISO timestamp + body. Flagged items called out.>

## Sub-issue graph
### Parent
<parent block: ref, title, state, url, type label> (or "None — this is an Epic / unparented")

### Sub-issues (children, <count>)
- <ref> — <type> — <status> — <state> — <title>
  - <one-paragraph body summary>
  - <FLAG: in progress by other assignee> if applicable

## Linked Issues (parsed from body `## Links`)
### Blocks (<count>)
<per-issue block>

### Is Blocked By (<count>)
<per-issue block; include shipped/not-shipped state of any linked PRs>

### Relates To (<count>)
<per-issue block>

### Duplicates / Clones
<per-issue block>

## Linked Pull Requests
### Native (closedByPullRequestsReferences + cross-references)
- <pr-ref> — <state> — <title> — <reviewDecision>
  <body summary + unresolved review comments>

### Body-referenced (`Resolves #<n>`)
<per-PR block>

## Label-Event History
- Status: <known|unknown>
- Events:
  - <ISO> — <labeled|unlabeled> — <label-name> — <actor-login>
  - ...

## Sibling Sub-issues (other children of the same parent, <count>)
- <ref> — <type> — <status> — <assignee> — <title>  **[FLAG: in progress by other assignee]**

## Summary for Downstream
- Full graph fetched: <issue-count>
- Blockers still open: <list>
- Related in-flight work: <list>
- Relevant PRs: <list with state>

Rules

• Never summarize or truncate the primary issue's body or Validation Journey section.
• Never skip a link type, even if it seems unrelated — the agent downstream decides relevance.
• If a linked issue / PR returns an access error (private repo, deleted, etc.), capture the error and continue. Do not abort the read.
• Flag in-flight sibling work prominently so the caller can avoid duplicate implementation.
• If the issue has no parent sub-issue, state this explicitly — do not silently skip Phase 5.
• Output is pure context. This skill never modifies the issue.
• The body parser must be tolerant of small format variations (different ## casings, missing optional sections) but strict enough that downstream skills can rely on the named sections being present when they exist.