MCP Server Implementation Updates

Date: February 16, 2026
Version: 1.202602.0

Summary

The MCP (Model Context Protocol) Server has been updated to fully reflect all recent additions, enhancements, and changes to the hana-cli project. The server now dynamically exposes 150+ commands with complete parameter documentation, including all new commands added in recent releases.

Key Updates

1. Enhanced Command Parser (src/command-parser.ts)

Previous Limitation:

• Function-based builders were ignored, resulting in empty parameter schemas
• Only direct object builders were properly introspected

Improvements:

• Added getBuilderObject() function that intelligently handles both:
  • Direct object-based builders (majority of commands)
  • Function-based builders by safely attempting to invoke them
  • Proper error handling for function calls
• Better extraction of command metadata including aliases and descriptions
• More robust parameter type mapping

2. Improved Error Handling & Validation (src/executor.ts)

Enhancements:

• Better documentation of connection validation behavior
• Support for multiple connection methods:
  • .env files
  • default-env.json configuration
  • Connection parameters via CLI flags
  • Service keys and BTP connections
  • Database connection profiles
• Graceful error propagation allowing CLI to provide specific error messages
• Support for commands that don't require database connections

3. Better Command Loading (src/index.ts)

Improvements:

• Enhanced logging showing command module count and successful registrations
• Better differentiation between loaded modules and registered commands
• Improved error messages for debugging command loading issues
• Validation that commands were actually registered
• More informative console output for MCP server diagnostics

4. Output Formatting (src/output-formatter.ts)

Features Maintained:

• Command-specific formatters for common operations
• ASCII table parsing and conversion to markdown
• Schema name shortening for UUIDs
• Table grouping and aggregation
• Support for multiple output types (CSV, Excel formats)

Recently Exposed Commands

The MCP server now properly exposes and documents all new commands added in recent releases:

Import/Export Enhancements

• import - Now with new parameters:

  • matchMode - Match columns by order, name, or auto (new in v4.202602.0)
  • dryRun - Preview import without committing
  • maxFileSizeMB - Memory protection
  • timeoutSeconds - Operation timeout control
  • nullValues - Custom NULL value handling
  • skipWithErrors - Continue on errors
  • maxErrorsAllowed - Error threshold control

• export - With full parameter documentation

• tableCopy - Table data copying operations

Data Analysis Commands

• dataValidator - Validate data quality
• dataDiff - Compare dataset differences
• dataProfile - Profile data distributions
• dataSync - Synchronize data between sources
• dataLineage - Trace data lineage

Inspection & Analysis

• inspectTable - Detailed table analysis
• inspectProcedure - Procedure metadata
• inspectFunction - Function details
• inspectTrigger - Trigger information
• queryPlan - Query execution plans
• fragmentationCheck - Storage optimization analysis

Database Management

• healthCheck - System health status (new)
• memoryLeaks - Memory leak detection (new)
• memoryAnalysis - Memory consumption analysis (new)
• duplicateDetection - Find duplicate records
• referentialCheck - Referential integrity validation
• timeSeriesTools - Time series data operations

Cloud & BTP Integration

• hanaCloudInstances - SAP HANA Cloud instance management
• hanaCloudStart - Start HANA Cloud instances
• hanaCloudStop - Stop HANA Cloud instances
• btpInfo - BTP account information
• btpSubs - BTP subscriptions

Maintenance & Optimization

• reclaim - Reclaim disk space
• cacheStats - Cache statistics
• calcViewAnalyzer - Analytical view analysis
• fragmentationCheck - Address fragmentation
• tableHotspots - Identify hot tables
• expensiveStatements - Find expensive queries

Batch Operations

• massGrant - Batch permission grants
• massDelete - Bulk record deletion
• massUpdate - Bulk data updates
• massRename - Batch object renaming
• massConvert - Bulk data type conversion
• massExport - Batch export operations

Technical Improvements

Command Registration Flow

1. Initialization → bin/index.js loads all command modules
2. Module Processing → Each command's metadata is extracted
3. Parameter Introspection → Builder objects are converted to JSON Schema
4. Registration → All commands registered with aliases as separate tools
5. Tool Exposure → Tools available to MCP clients (Claude, etc.)

Parameter Extraction

• String, number, boolean, and array types properly mapped
• Default values preserved in schema
• Enum/choice values included for validation
• Required parameters marked in schema
• Descriptions extracted from yargs configuration
• Aliases documented alongside main command names

Performance & Stability

• Lazy loading of command modules reduces startup time
• Safe builder invocation prevents crashes from edge cases
• Proper error handling ensures MCP server stays responsive
• Timeout protection prevents hanging on long operations
• Connection validation deferred to CLI for better error messages

Version Compatibility

• MCP SDK: ^1.26.0
• Node.js: ≥20.19.0 (matching parent project)
• TypeScript: ^5.7.3
• CLI Version: 4.202602.0 and later

Usage Examples

Once configured in your MCP settings, the server exposes tools like:

hana_import          # Main import command
hana_imp             # Alias
hana_uploadData      # Alias
hana_tables          # List tables
hana_t               # Alias
hana_dataValidator   # Validate data
hana_healthCheck     # System health
# ... and 150+ more commands

Configuration

See README.md for MCP client configuration instructions.

For troubleshooting, refer to TROUBLESHOOTING.md.

Build Instructions

To rebuild the MCP server after making changes:

cd mcp-server
npm run build

The compiled JavaScript will be output to build/ directory.

What's Reflected

✅ All 150+ commands - Complete command set
✅ New parameters - Import matchMode, dryRun, maxFileSizeMB, etc.
✅ Command aliases - All aliases properly exposed
✅ Parameter documentation - Full descriptions and types
✅ Output formatting - Markdown tables for better readability
✅ Error handling - Graceful degradation and helpful messages
✅ Connection methods - Support for multiple connection types
✅ Latest features - New v4.202602.0 capabilities included

Next Steps

1. Configure MCP Client - Add MCP server to your Claude Dev / Cline settings
2. Test Commands - Try commands like hana_healthCheck, hana_dataValidator
3. Use in AI - Leverage AI assistance with full command capabilities
4. Monitor Logs - Check console output for diagnostic information

Support

For issues or feature requests related to the MCP server:

1. Check TROUBLESHOOTING.md
2. Review README.md
3. Consult main project documentation

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Updated: 2026-02-16
MCP Server Version: 1.202602.0
Main CLI Version: 4.202602.0