Amia Github Pr Context

GitHub PR Context Skill

Overview

Retrieves comprehensive GitHub Pull Request context (metadata, changed files, diffs) for code review planning and task delegation.

Prerequisites

• GitHub CLI (gh) installed and authenticated (gh auth status)
• Python 3.8+ available in PATH
• Read access to the target repository

Instructions

1. Verify prerequisites: run gh auth status and python3 --version
2. Choose the right script based on what you need:
   • Full PR overview → amia_get_pr_context.py
   • Changed files list → amia_get_pr_files.py
   • Code diff → amia_get_pr_diff.py
3. Run with required params: always pass --pr NUMBER, optionally --repo OWNER/REPO
4. For diffs: add --stat for summary or --files f1.py f2.py for specific files
5. Parse output: pipe JSON to jq; check exit codes (0=ok, 1=bad params, 2=not found, 3=API error, 4=not authed)

Checklist

Copy this checklist and track your progress:

• GitHub CLI authenticated
• Python 3.8+ available
• Read access to target repo confirmed
• Correct script selected for the task
• --pr NUMBER parameter provided
• Output parsed (JSON or diff)
• Exit codes checked

Output

Output discipline: All scripts support --output-file <path>.

Reference Documents

PR Analysis:

• pr-metadata — PR metadata JSON structure and field extraction
  • 1. PR Metadata JSON Structure
    • 1.1 Core identification fields (number, title, state)
    • 1.2 Author and assignee information
    • 1.3 Branch and merge information
    • 1.4 Labels, milestones, and projects
    • 1.5 Review and approval status
  • 1. Extracting Specific Fields
    • 2.1 Getting PR title and description
    • 2.2 Finding the source and target branches
    • 2.3 Checking mergeable status and conflicts
    • 2.4 Listing reviewers and their decisions
  • 1. Common Metadata Queries
    • 3.1 Is this PR ready to merge?
    • 3.2 Who needs to approve this PR?
    • 3.3 What labels are applied?
• diff-analysis — Understanding and analyzing PR diffs
  • 1. Understanding Diff Output
    • 1.1 Unified diff format explanation
    • 1.2 File headers and hunks
    • 1.3 Addition, deletion, and context lines
  • 1. File-Level Analysis
    • 2.1 Identifying file types by extension
    • 2.2 Detecting rename and copy operations
    • 2.3 Binary file changes
  • 1. Change Statistics
    • 3.1 Lines added vs deleted
    • 3.2 Files by change type (added, modified, deleted)
    • 3.3 Estimating review complexity
  • 1. Filtering and Focusing
    • 4.1 Filtering by file path patterns
    • 4.2 Ignoring generated files
    • 4.3 Focusing on specific directories

Operations:

• op-get-pr-context — Full PR context retrieval operation
  • Purpose
  • When to Use
  • Prerequisites
  • Input
  • Output
  • Steps
    • Step 1: Run the Context Script
    • Step 2: Parse the JSON Output
    • Step 3: Use Context for Review Planning
  • Command Variants
    • Basic Context
    • Specific Repository
  • Alternative: Direct gh CLI
  • Context Fields Explained
    • Mergeable Status
    • Review Decision
    • File Status
  • Example: Review Planning
  • Extracting Specific Information
    • Get Just File Paths
    • Get Mergeable Status Only
    • Get Author
  • Exit Codes
  • Error Handling
  • Related Operations
• op-get-pr-files — Changed files listing operation
  • Purpose
  • When to Use
  • Prerequisites
  • Input
  • Output
  • Steps
    • Step 1: Run the Files Script
    • Step 2: Parse the Output
    • Step 3: Analyze File Distribution
  • Command Variants
    • Basic File List
    • Include Patch Content
    • Specific Repository
  • Alternative: Direct gh CLI
  • File Status Values
  • Analyzing File Distribution
    • By Directory
    • By File Type
    • By Change Magnitude
  • Example: Review Delegation
  • Example: With Patch Content
  • Large PRs (>100 files)
  • Exit Codes
  • Error Handling
  • Related Operations
• op-get-pr-diff — Diff retrieval operation
  • Purpose
  • When to Use
  • Prerequisites
  • Input
  • Output
  • Steps
    • Step 1: Run the Diff Script
    • Step 2: Review the Output
  • Command Variants
    • Full Diff
    • Statistics Only
    • Specific Files
    • Combine with Other Tools
  • Alternative: Direct gh CLI
  • Understanding Unified Diff Format
    • Hunk Header Explained
  • Filtering Diff Output
    • Find Added Lines
    • Find Removed Lines
    • Find Files with Specific Changes
  • Example: Security Review
  • Example: Test Coverage Check
  • Large Diffs
  • Exit Codes
  • Error Handling
  • Related Operations
• op-analyze-pr-complexity — PR complexity analysis operation
  • Purpose
  • When to Use
  • Prerequisites
  • Input
  • Output
  • Complexity Factors
  • Steps
    • Step 1: Gather Metrics
    • Step 2: Calculate Size Category
    • Step 3: Identify Sensitive Files
    • Step 4: Assess Module Spread
    • Step 5: Check Test Coverage
    • Step 6: Calculate Final Score
    • Step 7: Generate Review Time Estimate
    • Step 8: Create Delegation Recommendation
  • Example: Complete Analysis
  • Complexity Score Guide
  • Error Handling
  • Related Operations

Extended Guide:

See detailed-guide for full reference:

• When to Use This Skill
• Decision Tree: Which Script to Use
• Exit Codes
• Error Handling
• Integration with Integrator Agent
• Detailed Examples

Error Handling

If a script fails, check the exit code and stderr output. Common issues:

• Exit 1: Invalid parameters or missing arguments
• Exit 2-4: GitHub API errors (auth, not found, rate limit)

See the detailed guide above for detailed error scenarios.

Resources

Full reference: detailed-guide:

• When to Use This Skill
• Decision Tree: Which Script to Use
• Exit Codes
• Error Handling
• Integration with Integrator Agent
• Detailed Examples
  • Get Full PR Context
  • List Changed Files
  • Get Diff
  • Extracting Specific Information

Examples

Get PR context and extract files

python3 amia_get_pr_context.py --pr 123
python3 amia_get_pr_context.py --pr 456 --repo owner/repo-name
python3 amia_get_pr_diff.py --pr 123 --stat