comfyui-mcp

Find model weights and get them onto the connected ComfyUI, and track the transfers. Driven by the `action` parameter:\n

Inspect what models this ComfyUI has installed, and where it looks for them. Driven by the `action` parameter:\n

Read what has already been generated on this machine — execution history, why a run failed, and the settings your past renders actually used. Driven by the `action` parameter:\n

Micro-apps on this ComfyUI (panel Apps feature): named workflows packaged for one-click runs. Driven by the `action` parameter:\n

Control the lifecycle of the ComfyUI server process. Driven by the `action` parameter:\n

Stage and curate the training DATASETS a LoRA run consumes — the images and their captions. Datasets are keyed by `name`; the jobs that train on them live in the separate `train_start` tool and are keyed by `id`. Driven by the `action` parameter:\n

Run and inspect LoRA training JOBS — launch a run, poll it, stop it, delete it, and read back the settings behind it. Jobs are keyed by `id`; the datasets they train on live in the separate `train_prepare_dataset` tool and are keyed by `name`. Driven by the `action` parameter:\n

Preflight and set up the TRAINER ITSELF — the docker/GPU/venv machinery every training job needs. Touches no dataset and no job. Driven by the `action` parameter:\n

Author and check ComfyUI workflow JSON. Driven by the `action` parameter:\n

Run MANY ComfyUI workflows under one durable batch_id. Driven by the `action` parameter:\n

Install, repair, enable/disable and remove ComfyUI custom node packs on this ComfyUI. To FIND a pack in the public registry first, use search_custom_nodes. Driven by the `action` parameter:\n

Curate a model file

DISABLED — issue reporting remains off during limited maintenance. This tool files NOTHING and contacts no service. It returns the reporting status, without a prefilled issue link. Kept registered for older prompts and skills; continue helping with the task, without retrying or filing through another tool.

See what comfy-kitchen can do on this GPU, find where a graph is leaving it on the table, and apply the faster path. Driven by `action`:\n

Inspect and manage ComfyUI workspaces (local installs). Driven by the `action` parameter:\n

Discover ComfyUI custom node PACKS in the public ComfyUI Registry (registry.comfy.org). Read-only and network-only: queries the hosted registry over HTTP and does NOT require a running ComfyUI or COMFYUI_PATH. This searches node PACKS, not models (use download_model action:\

Inspect and manage the ComfyUI execution queue. Driven by the `action` parameter:\n

Deploy, start, stop, inspect and connect to RunPod cloud GPU pods, and switch rendering between your local machine and a pod. Driven by the `action` parameter. SPENDS MONEY: action:\

Watch a RunPod pod

Generate media from a prompt or an existing image — the high-level entry points that build the graph for you. Every action enqueues on the connected ComfyUI and returns the prompt_id immediately; the resulting asset_id arrives in the completion notification. Driven by the `action` parameter:\n

Fetch, browse and inspect ComfyUI images and registered assets. Driven by the `action` parameter:\n

Put a file where ComfyUI (or cloud storage) can read it. Driven by the `action` parameter:\n

Bundled ComfyUI knowledge — installer packs, model-family skills, workflow templates — plus the two workflow-readiness checks. Driven by the `action` parameter:\n

Drive the official comfy-cli (envelope/1 JSON contract) for the selected ComfyUI environment. The MCP resolves `comfy` from COMFY_CLI_PATH, PATH, or the selected workspace

Free GPU VRAM by unloading cached models from ComfyUI. Use this between generation runs with different model families (e.g. switching from SDXL to Flux) or when running low on VRAM. Optionally unload only models or only memory.

Discover and run hosted partner/API nodes on the connected ComfyUI (e.g. Flux/BFL, Ideogram, Kling, Stability). These call external image/video providers and run server-side, requiring a Comfy account/API key configured on the ComfyUI server — they spend PAID api credits, unlike a local-GPU render. Driven by the `action` parameter:\n

DRAW a diagram of, or convert, workflow JSON you PASS IN (a JSON string or object) — it does NOT read the user

Binary-search (git-bisect style) over installed ComfyUI custom nodes to find which one causes a problem. A state machine driven by the `action` parameter:\n

Author, edit, test and publish YOUR OWN ComfyUI custom-node pack under the custom_nodes/ directory the running ComfyUI actually scans. LOCAL-ONLY: it acts on the local filesystem and is meaningless for a remote --comfyui-url target. Every file-touching action (list_files, read, search, write, patch, git) is jailed to custom_nodes/ under the directory the running ComfyUI actually scans — the server

Install, update and configure the local ComfyUI installation, its sidebar panel, and this MCP server itself. Driven by the `action` parameter:\n

Return, list, summarize or query a SAVED workflow FILE — files on disk, named from the library or given as a path/JSON — NOT the graph open on the user

WRITE to the ComfyUI user library: persist a workflow, or capture/verify its provenance lock. This is the only tool here that writes — reading is get_workflow. Driven by the `action` parameter:\n

Apply a ComfyUI setup manifest from an inline object or .json/.yaml/.yml file. Composes custom-node installs and model downloads, installs pip packages, and reports apt entries as skipped (system packages need manual/root installation). LOCAL ComfyUI: model downloads use the connected server

Inspect the connected ComfyUI server: what it is running on, what it has logged, and whether it is healthy enough to dispatch work to. All three actions are READ-ONLY — nothing here mutates anything. Driven by the `action` parameter:\n

Read and write settings — either OUR generation defaults or ComfyUI

Custom-node snapshots via ComfyUI-Manager (mirrors `comfy node save-snapshot` / `restore-snapshot`). Driven by the `action` parameter:\n

Evaluate a batch of math expressions exactly — no ComfyUI connection needed, so it works even in cloud mode or when ComfyUI is down. A safe, zero-dependency expression evaluator (no eval): numbers only, no strings/arrays/property access. Handy for the arithmetic agents get wrong token-by-token.\n\n

Submit work to the ComfyUI execution queue — the primary way an agent starts a render. Driven by the `action` parameter:\n

Returns pong

Echoes the message

Registered but switched off.

A workflow that happens to be named call_tool.

A workflow squatting list_tools.