Regex for URL: github\.com/([^/]+)/([^/]+)/pull/(\d+)
Regex for short: ([^/]+)/([^#]+)#(\d+)

{
  "tool": "get_pull_request",
  "server": "user-github",
  "arguments": {
    "owner": "<owner>",
    "repo": "<repo>",
    "pull_number": <number>
  }
}

{
  "tool": "get_pull_request_files",
  "server": "user-github",
  "arguments": {
    "owner": "<owner>",
    "repo": "<repo>",
    "pull_number": <number>
  }
}

## PR Retrieved

**Repository**: owner/repo
**PR #**: 123
**Title**: feat: add user authentication

### PR Info

| Field | Value |
|-------|-------|
| Author | @username |
| State | open |
| Base | main |
| Head | feature/auth |
| Commits | 3 |
| Changed Files | 5 |

### Description

<PR description content>

### Files Changed

| Status | File | +/- |
|--------|------|-----|
| modified | src/auth/login.ts | +50/-10 |
| added | src/utils/helper.ts | +30/-0 |
| deleted | src/deprecated.ts | +0/-25 |

### Diff Content

<unified diff for each file>

{
  "source": "github-pr",
  "repository": {
    "owner": "owner",
    "repo": "repo"
  },
  "pull_request": {
    "number": 123,
    "title": "feat: add user authentication",
    "body": "PR description...",
    "author": "username",
    "state": "open",
    "base": {
      "ref": "main",
      "sha": "abc123"
    },
    "head": {
      "ref": "feature/auth",
      "sha": "def456"
    },
    "labels": ["enhancement"],
    "created_at": "2024-01-15T10:30:00Z",
    "updated_at": "2024-01-15T12:00:00Z"
  },
  "stats": {
    "files_changed": 5,
    "additions": 120,
    "deletions": 45,
    "commits": 3
  },
  "files": [
    {
      "path": "src/auth/login.ts",
      "status": "modified",
      "additions": 50,
      "deletions": 10,
      "patch": "@@ -1,10 +1,50 @@\n..."
    }
  ],
  "diff": "<combined unified diff>"
}

□ Parse PR Reference
  □ Extract owner, repo, pull_number
  □ Handle URL or short format

□ Fetch PR Details
  □ Call get_pull_request MCP tool
  □ Extract metadata and head SHA

□ Fetch Changed Files
  □ Call get_pull_request_files MCP tool
  □ Get patches for all files

□ Format Output
  □ Structure for review pipeline
  □ Include commit SHA for review submission

1. retrieve-diff-from-github-pr (this skill)
   ↓
2. codereview-orchestrator (triage)
   ↓
3. Specialist skills (review)
   ↓
4. submit-github-review (post review)