# Version Management
## Overview
The MCP ADR Analysis Server uses a robust version management system that automatically reads the version from `package.json` and provides future-proof fallback handling.
## How It Works
### Version Resolution Strategy
The `getPackageVersion()` function uses multiple strategies to determine the version:
1. **Primary Strategy**: Search for `package.json` in multiple locations:
- Current directory
- Parent directory
- Grandparent directory
- Process working directory
2. **Environment Strategy**: Use `process.env.npm_package_version` when available (during npm scripts)
3. **Generic Fallback**: Use `'unknown'` instead of hardcoded version numbers
### Future-Proof Design
The version system is designed to be **future-proof**:
- ✅ **No hardcoded version numbers** in fallback logic
- ✅ **Generic fallback** that doesn't need updates
- ✅ **Automatic version detection** from package.json
- ✅ **Comprehensive test coverage** for version scenarios
## Previous Issue
Before this improvement:
- Fallback versions were hardcoded (e.g., `'2.0.2'`, `'2.0.15'`)
- Each version update required manual code changes
- Risk of version mismatch between package.json and fallback values
## Current Solution
After the improvement:
- Fallback uses generic `'unknown'` value
- No code changes needed when package.json version updates
- Multiple strategies ensure version is found in most scenarios
- Clear documentation prevents future hardcoding
## Usage
```bash
# Check version
npx mcp-adr-analysis-server --version
# Example output:
# MCP ADR Analysis Server v2.0.15
```
## Testing
The version system includes comprehensive tests:
```bash
npm test -- tests/version.test.ts
```
Tests verify:
- Correct version reading from package.json
- Generic fallback behavior
- Future-proof implementation (no hardcoded version numbers)
## Maintenance
**When updating the package version:**
1. Update `package.json` version field ✅
2. **No code changes needed** ✅
3. Version command automatically shows new version ✅
This design eliminates the need for manual code updates when the version changes.