🚀 mcp-pr-companion

mcp-pr-companion is a dual-interface local pre-processing system (supporting Bitbucket Cloud REST API v2 & local Git diffs) designed to convert Pull Requests into compact, Adaptive AI Context Packs optimized for AI Coding Assistants and AI Agents.

📌 1. Features Overview

• Adaptive AI Context Strategy:

  • Dynamically tailors context pack structures based on PR size and risk level across 4 modes: skim, standard, inspect_priority_files, and deep_review.

  • Automatically generates an explicit Read Strategy section guiding AI agents on required next files, optional next files, and skipped categories to optimize token efficiency (70% - 95% token savings).

  • Moves full file lists into files.md, keeping context.md ultra-compact (0.5 – 1KB for comment-only PRs).

• Schema v4 & Atomic Revision Storage:

  • Multi-revision storage engine featuring atomic write staging to prevent partial writes.

  • Manages active revision pointers via current.json (context_path, files_summary_path, actions_path, manifest_path, ai_reading_mode).

• MCP Server & Dual-Interface Architecture:

  • Local MCP Server over stdio: Exposes MCP tools (get_pr_context_pack, get_pr_file_context, search_pr_files, get_pr_manifest, get_pr_sync_status, refresh_pr_data) for direct integration with AI IDEs and Agents.

  • Terminal UI (npm run cmd): Interactive TUI for token configuration, PR link registry management, cache warming, and log inspection.

  • One-Command Auto Sync (npm run mcp-pr-companion): Automated sequential discovery, filtering, and context pack generation for all OPEN pull requests owned by the user.

• AST Analyzer & Secret Redacting Security:

  • Classifies change kinds (comment_only, functional_logic, public_api, database_schema, auth_security, configuration, etc.).

  • Extracts source code AST symbols (functions, methods, HTTP routes).

  • Automatically scans and redacts tokens/passwords via Redactor (ATBB****abcd).

  • Enforces account identity locking (author.uuid) to prevent cross-account PR data leakage.

Related MCP server: MCP Merge Request Summarizer

🛠️ 2. Available Commands

🔄 3. Feature Workflow

The diagram below illustrates the end-to-end pipeline from PR request to Adaptive AI Context Pack generation and MCP serving:

flowchart TD
    A[PR Sync Request / MCP Tool Call] --> B{Request Source}
    B -- Terminal UI / CLI --> C[Bitbucket API / Local Git]
    B -- MCP Server Tool Call --> C

    C --> D[Authenticate & Filter Author UUID]
    D --> E[Fetch Diffs, Commits & Metadata]
    
    E --> F[AST Analyzer & Risk Analyzer]
    F --> G[Classify Change Kind & Risk Tags]
    
    G --> H[ContextModeClassifier]
    H -->|Evaluate File Count & Risk Level| I{Select Context Mode}
    
    I -- total_files <= 3 & comment_only --> J[Mode: skim]
    I -- standard logic changes --> K[Mode: standard]
    I -- public_api / database_schema --> L[Mode: inspect_priority_files]
    I -- overall_risk high/critical or files > 30 --> M[Mode: deep_review]

    J --> N[Generate Read Strategy & Markdown Context]
    K --> N
    L --> N
    M --> N

    N --> O[Atomic Revision Writer]
    O --> P[Persist Staging Directory Atomically]
    P --> P1[context.md - Adaptive Pack]
    P --> P2[files.md - Full File Index]
    P --> P3[files/file_XXXX.md - File Details]
    P --> P4[manifest.json & current.json]

    P1 & P2 & P3 --> Q[Serve MCP Client / AI Agent]

📁 Runtime Directory & Context Output Layout

Generated context packs are structured as follows:

ai-context/{company}/{app}/{feature}/{repo}_{PR-ID}/
├── context.md          # Primary AI Entrypoint (Adaptive Markdown Context Pack)
├── files.md            # Complete Changed Files Index & Categorization Table
├── actions.md          # Tool Action Summary & Coverage Metadata
├── current.json        # Pointer to Active Revision & Reading Mode
├── manifest.json       # Structured Metadata Manifest (v4 Schema)
├── files/              # Per-file AI Detail Markdown Files
│   ├── file_0001.md
│   └── file_0002.md
└── revisions/          # Revision History Subdirectory
    └── rev_xxxx_yyyy/