comfyui_modify_workflow

MCP tool from Comfyui MCP by hybridindie

Apply batch operations (addnode, removenode, setinput, connect, disconnect) to a workflow.

How to use it

Project documentation lists comfyui_modify_workflow for the Comfyui MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.

Install Comfyui MCP

$uv --directory /path/to/comfyui_mcp run comfyui-mcp-secure

FULL COMFYUI MCP LISTING

Other tools in Comfyui MCP (39)

comfyui_analyze_workflow

Return a structured analysis of a workflow as a dict (nodecount, classtypes, flow, models, parameters, pipeline, promptnodes, negativenodes). Use this when you want to read fields like pipeline programmatically; use comfyuisummarizeworkflow for a human-readable text or Mermaid rendering.

comfyui_audit_dangerous_nodes

Scan all installed nodes to identify potentially dangerous ones.

comfyui_cancel_job

Cancel a running or queued job. Uses the native /api/jobs/{id}/cancel endpoint and falls back to the legacy /queue delete on 404 (older ComfyUI builds).

comfyui_cancel_jobs

Batch-cancel one or more jobs by promptid via /api/jobs/cancel.

comfyui_clear_queue

Clear pending and/or running items from the queue.

comfyui_create_workflow

Create a workflow from templates including txt2img/img2img/upscale/inpaint, txt2vidanimatediff/txt2vidwan, controlnetcanny/controlnetdepth/controlnetopenpose, ipadapter, lorastack, facerestore, fluxtxt2img, and sdxltxt2img.

comfyui_generate_image

Text-to-image using a built-in workflow. Params: prompt, negativeprompt, width, height, steps, cfg, model. Set wait=True to block until complete and return outputs.

comfyui_get_job

Look up a single job (queued/running/finished) by promptid.

comfyui_get_model_metadata

Get metadata for a specific model file.

comfyui_get_model_preview

Fetch a model's preview image via /experiment/models/preview/{folder}/{pathindex}/{filename}. Returns base64-encoded image data + mime type, or {"available": false} on 404.

comfyui_get_node_info

Get detailed info about a specific node type.

comfyui_get_progress

Get execution progress for a workflow by promptid. Returns status, queue position, and outputs.

comfyui_get_queue

Get current execution queue state.

comfyui_get_queue_status

Get detailed queue status including running and pending prompts.

comfyui_get_server_features

Get ComfyUI server features and capabilities.

comfyui_get_settings

Read ComfyUI server settings (sampler defaults, UI prefs, feature flags) from GET /settings.

comfyui_get_subgraph

Fetch a single subgraph's JSON for inspection or insertion (/globalsubgraphs/{id}).

comfyui_get_system_info

Sanitized GPU VRAM, queue depth, and ComfyUI version (whitelist-filtered from /systemstats).

comfyui_inpaint_image

Inpaint masked regions of an image. Params: image, mask (filenames), prompt, negativeprompt, strength, steps, cfg, model. Both files must be uploaded first.

comfyui_install_custom_node

Queue install for a custom node pack by nodeid; optional restart and post-install security audit.

comfyui_interrupt

Interrupt the running workflow (global, or targeted via optional promptid).

comfyui_list_extensions

List available ComfyUI extensions.

comfyui_list_jobs

List jobs across queue + history with status filter, sorting, and pagination.

comfyui_list_model_folders

List available model folder types.

comfyui_list_models

List available models by folder (checkpoints, loras, vae, etc.).

comfyui_list_models_detailed

List models in a folder with file metadata (name, pathIndex, modified, created, size) from /experiment/models/{folder}. Use this when you need the pathIndex for preview lookups.

comfyui_list_nodes

List all available node types.

comfyui_list_subgraphs

List available reusable subgraph templates from ComfyUI (/globalsubgraphs).

comfyui_list_workflows

List saved workflow templates.

comfyui_run_workflow

Submit arbitrary ComfyUI workflow JSON. Inspected for dangerous nodes before execution. Set wait=True to block until complete and return outputs.

comfyui_run_workflow_stream

Submit workflow JSON and capture ComfyUI websocket stream events (progress, executing, executed, etc.) until terminal status, returning events plus final outputs/status.

comfyui_search_custom_nodes

Search ComfyUI Manager registry custom node packs by name/description/author.

comfyui_summarize_workflow

Summarize a workflow's structure, data flow, models, and parameters. Supports outputformat="text" (default) or outputformat="mermaid" for diagram markup.

comfyui_transform_image

Image-to-image transformation. Params: image (filename), prompt, negativeprompt, strength (0.0-1.0), steps, cfg, model. Input must be uploaded via comfyuiuploadimage first.

comfyui_uninstall_custom_node

Queue uninstall for a custom node pack by nodeid; optional restart.

comfyui_update_custom_node

Queue update for a custom node pack by nodeid; optional restart and post-update security audit.

comfyui_update_settings

Merge new settings into the ComfyUI server config via POST /settings (audit-logged; mutating).

comfyui_upscale_image

Upscale an image using a model-based upscaler. Params: image (filename), upscalemodel (default: RealESRGANx4plus.pth).

comfyui_validate_workflow

Validate workflow structure, server compatibility, and security.