PR Review Integration

Review pull requests by integrating GitHub operations with Linear issue tracking. Validate code changes against project requirements and provide comprehensive reviews.

Prerequisites

• GitHub CLI (gh) installed and authenticated
• Linear MCP server configured and available
• Access to both GitHub repository and Linear workspace

Complete PR Review Workflow

Step 1: Extract Context from PR

Get PR details:

gh pr view <pr-number> --json title,body,author,state,baseRefName,headRefName

Get changed files:

gh pr view <pr-number> --json files --jq '.files[].path'

Get PR diff:

gh pr diff <pr-number>

Extract Linear issue references:

gh pr view <pr-number> --json body --jq '.body' | grep -oE 'LIN-[0-9]+'

Step 2: Fetch Linear Issue Requirements

Get issue details:

mcp_Linear_get_issue({
  id: "LIN-123", // extracted from PR
  includeRelations: true // get related/blocking issues
})

Extract requirements from issue:

• Parse issue description for acceptance criteria
• Check labels for feature tags
• Review comments for additional context
• Check relatedTo and blocks for dependencies

Step 3: Analyze PR Changes

Review code changes:

gh pr diff <pr-number>
gh pr diff <pr-number> -- path/to/file
gh pr view <pr-number> --json files --jq '.files[] | "\(.path): +\(.additions) -\(.deletions)"'

Check PR status:

gh pr checks <pr-number>
gh pr view <pr-number> --json mergeable,mergeStateStatus

Step 4: Validate Against Requirements

Compare PR changes to issue requirements:

1. Check Feature Completeness:

   • Does PR implement all acceptance criteria?
   • Are all required features present?
   • Are edge cases handled?

2. Check Code Quality:

   • Follows project standards (AGENTS.md, Cursor rules)
   • Proper error handling
   • Tests included (if required)
   • Documentation updated

3. Check Dependencies:

   • Related issues addressed?
   • Blocking issues resolved?
   • Integration points considered?

4. Identify Gaps:

   • Missing requirements
   • Incomplete implementations
   • Additional work needed

Step 5: Document Review Findings

Option A: GitHub PR Comment

gh pr comment <pr-number> --body "
## PR Review Summary

### ✅ Requirements Met
- [Requirement 1] - Implemented in [file]
- [Requirement 2] - Complete

### ⚠️ Gaps Identified
- [Gap 1] - Missing from issue LIN-123
- [Gap 2] - Needs additional work

### 📝 Code Quality
- Follows project standards
- [Additional notes]

### 🔗 Related Issues
- LIN-123 (main issue)
- LIN-124 (related)
"

Option B: Linear Issue Comment

mcp_Linear_create_comment({
  issueId: "LIN-123",
  body: `
## PR Review: #${prNumber}

### Status: ${reviewStatus}

### Requirements Coverage
${requirementsChecklist}

### Code Quality
${qualityNotes}

### Next Steps
${nextSteps}
  `
})

Option C: Update Linear Issue

mcp_Linear_update_issue({
  id: "LIN-123",
  state: "In Review", // or appropriate status
})

Best Practices

1. Always link PRs to Linear issues for traceability
2. Extract issue IDs early to fetch requirements
3. Validate against requirements first, then code quality
4. Document gaps clearly with specific file/line references
5. Update Linear issues with review findings
6. Use consistent review format for readability
7. Handle edge cases gracefully (no issue, multiple issues, etc.)

Reference Documentation

• Review Patterns: See patterns.md for detailed patterns, edge cases, and checklist templates
• GitHub CLI Operations: .codex/skills/github-cli-operations/SKILL.md – GitHub CLI patterns
• Linear MCP Integration: .codex/skills/linear-mcp-integration/SKILL.md – Linear MCP functions