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initialize_graph

Initialize a code graph for repository analysis to map function relationships and dependencies, enabling AI assistants to explore code structure effectively.

Instructions

Initialize a code graph for the given repository path.

Args: repo_path: Path to the repository to analyze

Returns: Success message with information about the initialized graph

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
repo_pathYes

Implementation Reference

  • The handler function for the 'initialize_graph' tool, including the @mcp.tool() decorator which also serves as registration. This function initializes a CodeGraph for the given repository path, stores it globally, sets it as active, and counts Python files.
    @mcp.tool()
    def initialize_graph(repo_path: str) -> str:
        """Initialize a code graph for the given repository path.
    
        Args:
            repo_path: Path to the repository to analyze
    
        Returns:
            Success message with information about the initialized graph
        """
        global _code_graphs, _active_repo
    
        # Check if path exists
        if not os.path.exists(repo_path):
            return f"Error: Path '{repo_path}' does not exist"
        
        # Use absolute path as key
        abs_path = os.path.abspath(repo_path)
    
        try:
            result = CodeGraph.init(repo_path)
    
            if result.errors:
                error_messages = [str(error) for error in result.errors]
                return f"Errors initializing code graph:\n" + "\n".join(error_messages)
    
            _code_graphs[abs_path] = result.code_graph
            _active_repo = abs_path
    
            # Count Python files
            py_files = glob.glob(f"{repo_path}/**/*.py", recursive=True)
    
            return (
                f"Successfully initialized code graph for {repo_path}.\n"
                f"Repository contains {len(py_files)} Python files.\n"
                f"This is now the active repository."
            )
        except Exception as e:
            return f"Error initializing code graph: {str(e)}"
  • The @mcp.tool() decorator registers the initialize_graph function as an MCP tool.
    @mcp.tool()
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions that the tool initializes a graph and returns a success message, but lacks critical details such as whether this is a one-time setup, if it requires specific permissions, what happens if the graph already exists, or any performance implications. This is inadequate for a mutation tool with zero annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is appropriately sized and front-loaded, with the core purpose stated first, followed by brief sections for args and returns. Each sentence earns its place, though the structure is minimal and could be more polished.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (initializing a graph, likely a mutation), lack of annotations, no output schema, and low schema coverage, the description is incomplete. It doesn't explain what 'initializing' entails, potential side effects, or error conditions, making it insufficient for safe and effective use by an agent.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema description coverage is 0%, so the description must compensate. It adds meaning by explaining that 'repo_path' is the 'Path to the repository to analyze', which clarifies the parameter's purpose beyond the schema's basic type. However, it doesn't provide format details (e.g., absolute vs. relative paths) or examples, leaving some gaps.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Initialize a code graph for the given repository path.' It specifies the verb ('Initialize') and resource ('code graph'), and while it doesn't explicitly differentiate from siblings like 'analyze_dependencies' or 'get_function_call_graph', the focus on initialization is distinct enough for clarity.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., if the repository must be listed first), exclusions, or how it relates to sibling tools like 'list_repositories' or 'switch_repository', leaving the agent with no usage context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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