Best for
- Development teams analyzing multilingual codebases
- Users adopting Memgraph and knowledge graphs for code retrieval
- Claude Code users who need to query or edit a repository
C
50FMRS · D
The supplied materials describe an MIT-licensed open-source stdio MCP server for natural-language querying, retrieval, and editing of multilingual codebases through a Memgraph knowledge graph. No concrete MCP tool identifiers are supplied, so the tool list remains empty.
Code-Graph-RAG uses Tree-sitter to parse multilingual codebases, stores functions, classes, methods, modules, and relationships in a Memgraph knowledge graph, and supports natural-language code querying, retrieval, editing, and optimization. It provides one graph schema for mixed-language monorepos.
Tools
The tool list has not been reviewed yet.
Setup
Run the PyPI package code-graph-rag with uvx and the mcp-server argument. Configure the required ORCHESTRATOR_API_KEY and CYPHER_API_KEY, and make Memgraph available; optionally set the target repository path. The server uses stdio transport.
claude_desktop_config.json
{"mcpServers":{"code-graph-rag":{"command":"uvx","args":["code-graph-rag","mcp-server"],"env":{"ORCHESTRATOR_PROVIDER":"anthropic","ORCHESTRATOR_MODEL":"claude-sonnet-4-20250514","ORCHESTRATOR_API_KEY":"<required>","CYPHER_PROVIDER":"anthropic","CYPHER_MODEL":"claude-sonnet-4-20250514","CYPHER_API_KEY":"<required>","MEMGRAPH_HOST":"localhost","MEMGRAPH_PORT":"7687","TARGET_REPO_PATH":"<optional-repository-path>"}}}}
Fit and risk
Not for
- Users without a need for codebase analysis or editing
- Environments unable to run Memgraph or provide two LLM API keys
- Projects that only require basic text search
Required permissions
- Read source files in the target repository
- Write parsed code structure and relationships to Memgraph
- Access the configured LLM provider APIs
- Modify target repository files when code editing is requested
Risks and side effects
- AI-generated Cypher queries, analysis, or edits require human review
- Editing can modify source files; inspect the provided diff preview before applying changes
- Source-code structure is stored in Memgraph, so repository and database access controls matter
- The server requires sensitive credentials including ORCHESTRATOR_API_KEY and CYPHER_API_KEY
Troubleshooting
- Verify that the code-graph-rag package can be run through uvx
- Check that ORCHESTRATOR_API_KEY and CYPHER_API_KEY are set and match the configured providers
- Confirm that Memgraph is running at the configured host and port, localhost:7687 by default
- Verify that TARGET_REPO_PATH points to the intended repository, or start from the correct working directory
- Check documented prerequisites including Docker, cmake, and ripgrep
Use cases
Understand monorepo structure with natural-language questions
Retrieve source for functions, classes, and methods by name or intent
Search and rewrite code using AST patterns
Detect dead code and trace data flow
Perform AI-assisted code editing and optimization
Supported clients
Claude CodeFull support