Code-Index-MCP

# MCP Debugging Summary ## Problem Identified The MCP tools were failing to find symbols that existed in the codebase. Investigation revealed: 1. **Stale Index**: The index contained only files from `/app` (Docker mount point) instead of `/workspaces/Code-Index-MCP` 2. **No Current Files**: 0 files from the current repository were indexed 3. **Path Mismatch**: MCP searched the stale index while native tools searched actual files ## Root Cause The index was created in a Docker environment and contained paths like `/app/mcp_server/...` instead of the current repository paths. The BM25 content table had only 464 entries, all from the wrong location. ## Solutions Implemented ### 1. Reindexed Repository - Created `scripts/reindex_current_repo.py` to properly index current files - Successfully indexed 64,500+ files from `/workspaces/Code-Index-MCP` - BM25Indexer class now properly indexed and searchable ### 2. Fixed Path Translation Enhanced `translate_path()` in `mcp_server_cli.py` to handle: - Docker `/app/` paths → current directory - Absolute paths that exist → no translation - Relative paths → full path resolution ### 3. Added Index Validation Created `validate_index()` function that checks: - Total file count - BM25 document count - Files from current repository - Stale Docker paths - Path accessibility ### 4. Improved Error Reporting - Shows index validation issues when searches fail - Provides helpful suggestions to reindex - Reports index statistics in error messages ## Test Results After fixes, MCP tools now work correctly: 1. **Symbol Lookup**: Successfully found BM25Indexer class 2. **Code Search**: Found 20 results for "class BM25Indexer" 3. **Performance**: Both searches completed in < 1 second ## Key Learnings 1. **Index Portability**: Indexes created in one environment (Docker) may not work in another 2. **Path Management**: Absolute paths in indexes cause issues across environments 3. **Validation**: Always validate index health before trusting search results 4. **User Feedback**: Clear error messages with actionable suggestions are crucial ## Future Improvements 1. **Relative Path Storage**: Store relative paths in indexes for better portability 2. **Auto-Reindexing**: Detect stale indexes and prompt for reindexing 3. **Index Metadata**: Store environment info with indexes 4. **Incremental Updates**: Only reindex changed files The MCP system is now fully functional with proper error handling and user guidance.