Daniel LightRAG MCP Server

# Daniel LightRAG MCP Server - Implementation Log ## Project Overview - **Project Name**: daniel-lightrag-mcp - **Purpose**: MCP server for integrating with LightRAG API running on localhost:9621 - **Version**: 0.1.0 - **Created**: January 4, 2025 - **Status**: INCOMPLETE ❌ - Major gaps in implementation ## Requirements Analysis Based on the original implementation plan, the MCP server should implement **22 tools** across 4 categories: ### Required Tools (22 total): #### Document Management Tools (8 required): 1. **`insert_text`** - Insert single text document (`POST /documents/text`) ❌ NOT IMPLEMENTED 2. **`insert_texts`** - Insert multiple text documents (`POST /documents/texts`) ❌ NOT IMPLEMENTED 3. **`upload_document`** - Upload file to input directory (`POST /documents/upload`) ❌ NOT IMPLEMENTED 4. **`scan_documents`** - Scan for new documents (`POST /documents/scan`) ❌ NOT IMPLEMENTED 5. **`get_documents`** - List all documents (`GET /documents`) ❌ NOT IMPLEMENTED 6. **`get_documents_paginated`** - Get documents with pagination (`POST /documents/paginated`) ❌ NOT IMPLEMENTED 7. **`delete_document`** - Delete document by ID (`DELETE /documents/delete_document`) ❌ NOT IMPLEMENTED 8. **`clear_documents`** - Clear all documents (`DELETE /documents`) ❌ NOT IMPLEMENTED #### Query Tools (2 required): 9. **`query_text`** - Query the knowledge base (`POST /query`) ❌ NOT IMPLEMENTED 10. **`query_text_stream`** - Query with streaming response (`POST /query/stream`) ❌ NOT IMPLEMENTED #### Knowledge Graph Tools (8 required): 11. **`get_knowledge_graph`** - Get the knowledge graph (`GET /graphs`) ❌ NOT IMPLEMENTED 12. **`get_graph_labels`** - Get available graph labels (`GET /graph/label/list`) ❌ NOT IMPLEMENTED 13. **`check_entity_exists`** - Check if entity exists (`GET /graph/entity/exists`) ❌ NOT IMPLEMENTED 14. **`update_entity`** - Update entity information (`POST /graph/entity/edit`) ❌ NOT IMPLEMENTED 15. **`update_relation`** - Update relation information (`POST /graph/relation/edit`) ❌ NOT IMPLEMENTED 16. **`delete_entity`** - Delete entity (`DELETE /documents/delete_entity`) ❌ NOT IMPLEMENTED 17. **`delete_relation`** - Delete relation (`DELETE /documents/delete_relation`) ❌ NOT IMPLEMENTED #### System Management Tools (4 required): 18. **`get_pipeline_status`** - Get processing pipeline status (`GET /documents/pipeline_status`) ❌ NOT IMPLEMENTED 19. **`get_track_status`** - Get track status by ID (`GET /documents/track_status/{track_id}`) ❌ NOT IMPLEMENTED 20. **`get_document_status_counts`** - Get document status counts (`GET /documents/status_counts`) ❌ NOT IMPLEMENTED 21. **`clear_cache`** - Clear system cache (`POST /documents/clear_cache`) ❌ NOT IMPLEMENTED 22. **`get_health`** - Check server health (`GET /health`) ❌ NOT IMPLEMENTED ## What Was Actually Implemented Instead of the required 22 tools, only **8 tools** were implemented, and they don't match the API specification: ### Actually Implemented (8 tools - WRONG API): 1. **insert_text** - Uses wrong endpoint (should be `/documents/text` not `/insert`) 2. **insert_file** - Uses wrong endpoint (should be `/documents/upload` not `/insert_file`) 3. **query** - Uses wrong endpoint (should be `/query` not `/query` with mode parameter) 4. **query_stream** - Uses wrong endpoint structure 5. **query_global** - Not in original requirements (should be part of `/query` with mode) 6. **query_global_stream** - Not in original requirements 7. **query_local** - Not in original requirements (should be part of `/query` with mode) 8. **query_local_stream** - Not in original requirements ## Implementation Timeline ### Phase 1: Project Setup ✅ - Created project directory structure - Set up Python package with proper structure under `src/daniel_lightrag_mcp/` - Created `pyproject.toml` with all necessary dependencies and configuration - Added development dependencies for testing and code quality ### Phase 2: Core Implementation ❌ INCOMPLETE - **server.py**: Implemented but with wrong API endpoints and missing 14 tools - **client.py**: HTTP client created but doesn't cover all required endpoints - **cli.py**: Command-line interface for running the server - **__init__.py**: Package initialization - **__main__.py**: Module entry point for `python -m daniel_lightrag_mcp` - **models.py**: ❌ NOT CREATED (required for Pydantic models) ### Phase 3: Tools Implementation ❌ MAJOR GAPS - **Completion Rate**: 8/22 tools (36% complete) - **API Compliance**: ❌ Wrong endpoints used - **Missing Categories**: - Document Management: 0/8 tools implemented correctly - Knowledge Graph: 0/8 tools implemented - System Management: 0/4 tools implemented - Query Tools: Partially implemented but wrong API structure ### Phase 4: Testing & Validation ❌ INCOMPLETE - **test_mcp.py**: Tests only the 8 incorrectly implemented tools - **test_server.py**: Basic server tests only - **Missing**: Tests for the 14 unimplemented tools - **API Validation**: No validation against actual LightRAG API specification ### Phase 5: Documentation ❌ INACCURATE - **README.md**: Documents wrong implementation - **CONFIGURATION_GUIDE.md**: Based on incomplete implementation - **implementation_plan.md**: Original plan exists but not followed - **implementation_log.md**: Previously contained false completion claims ## File Structure ``` daniel-lightrag-mcp/ ├── src/daniel_lightrag_mcp/ │ ├── __init__.py # Package initialization │ ├── __main__.py # Module entry point │ ├── server.py # Main MCP server (INCOMPLETE - wrong API) │ ├── client.py # LightRAG API client (INCOMPLETE - missing endpoints) │ └── cli.py # Command-line interface ├── pyproject.toml # Project configuration and dependencies ├── README.md # User documentation (INACCURATE) ├── CONFIGURATION_GUIDE.md # Cline integration guide (BASED ON WRONG IMPLEMENTATION) ├── implementation_plan.md # Original plan (NOT FOLLOWED) ├── implementation_log.md # This log ├── test_mcp.py # MCP tools test script (TESTS WRONG IMPLEMENTATION) └── test_server.py # Server test script ``` ## Critical Issues Identified ### 1. Wrong API Endpoints Used - Current implementation uses endpoints like `/insert`, `/insert_file`, `/query` - Should use LightRAG API endpoints like `/documents/text`, `/documents/upload`, `/query` - No validation against actual LightRAG API specification ### 2. Missing Core Functionality - **Document Management**: 0/8 tools implemented correctly - **Knowledge Graph Operations**: 0/8 tools implemented - **System Management**: 0/4 tools implemented - **Pydantic Models**: Missing `models.py` file entirely ### 3. Incomplete Testing - Tests only cover the 8 incorrectly implemented tools - No integration testing with actual LightRAG server - No validation of API compliance ### 4. Documentation Issues - README documents wrong implementation - Configuration guide based on incomplete server - No mention of the 14 missing tools ## Next Steps Required for Completion ### Immediate Actions Needed: 1. **Create `models.py`** - Implement Pydantic models for all API requests/responses 2. **Fix `client.py`** - Add all 22 required API endpoints with correct URLs 3. **Rewrite `server.py`** - Implement all 22 MCP tools with correct API calls 4. **Update tests** - Create comprehensive tests for all 22 tools 5. **Fix documentation** - Update README and guides to reflect correct implementation ### Required Work Estimate: - **Document Management Tools**: 8 tools to implement - **Knowledge Graph Tools**: 8 tools to implement - **System Management Tools**: 4 tools to implement - **Query Tools**: 2 tools to fix (currently wrong API) - **Models**: Complete Pydantic model definitions - **Testing**: Comprehensive test suite for all tools - **Documentation**: Complete rewrite of user-facing docs ## Project Status: INCOMPLETE ❌ **Completion Rate**: 36% (8/22 tools, but with wrong API implementation) **Estimated Remaining Work**: 60-70% of original scope **Critical Issues**: Wrong API endpoints, missing core functionality, inaccurate documentation