load_workflow
Load a ComfyUI workflow file to inspect its structure or prepare it for modifications and execution.
Instructions
Load a workflow file for inspection or modification.
Args:
workflow_name: Workflow filename (e.g., 'my-workflow.json')
Returns the workflow dict that can be modified and executed.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| workflow_name | Yes | Workflow filename |
Implementation Reference
- The core handler function for the 'load_workflow' tool. It uses Pydantic Field for input schema validation, loads the specified workflow JSON file from the configured directory, handles errors like missing directory or file, and returns the workflow dictionary.
@mcp.tool() def load_workflow( workflow_name: str = Field(description="Workflow filename"), ctx: Context = None, ) -> dict: """Load a workflow file for inspection or modification. Args: workflow_name: Workflow filename (e.g., 'my-workflow.json') Returns the workflow dict that can be modified and executed. """ if not settings.workflows_dir: return ErrorResponse.not_configured("COMFY_WORKFLOWS_DIR").model_dump() wf_path = Path(settings.workflows_dir) / workflow_name if not wf_path.exists(): return ErrorResponse.not_found( f"Workflow '{workflow_name}'", suggestion="Use list_workflows() to see available workflows", ).model_dump() if ctx: ctx.info(f"Loading workflow: {workflow_name}") with open(wf_path) as f: return json.load(f) - src/comfy_mcp_server/tools/__init__.py:27-27 (registration)Within register_all_tools, this line calls register_workflow_tools(mcp), which defines and registers the load_workflow tool using @mcp.tool() decorator.
register_workflow_tools(mcp) - src/comfy_mcp_server/__init__.py:92-92 (registration)The top-level call to register_all_tools(mcp) in the package init, which triggers the registration chain leading to load_workflow being registered.
register_all_tools(mcp) - Pydantic Field defining the input schema for the workflow_name parameter of the load_workflow tool.
workflow_name: str = Field(description="Workflow filename"), ctx: Context = None,