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Runcomfy MCP Server

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Runcomfy MCP is answering right now. Last checked 5 min ago. It exposes 10 tools. Last commit 15 Sep 2026.

Remote MCP for RunComfy: ComfyUI deployments, hosted models, LoRA training. 31 tools.

Uptime history 91 days of history · worst day 86%
91 days agonow
100.0%
Uptime 24h
91 of 91 checks
10
Tools
read from the server
70 ms
Response time
average over 24h
1
Stars
last commit 15 Sep 2026

Nothing serious here today

Today is the operative word: we check Runcomfy MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

run in your terminal
claude mcp add runcomfy-mcp --transport http https://mcp.runcomfy.com/mcp
Settings → Connectors → Add custom connector, then paste this address
https://mcp.runcomfy.com/mcp
~/.codex/config.toml
[mcp_servers.runcomfy-mcp]
url = "https://mcp.runcomfy.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "runcomfy-mcp": {
      "url": "https://mcp.runcomfy.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "runcomfy-mcp": {
      "type": "http",
      "url": "https://mcp.runcomfy.com/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

deployment
create_deployment
Create a Serverless API (ComfyUI) deployment. Backs ``POST /prod/v2/deployments``. For LoRA deployments, create via the runcomfy.com UI instead. Args: name: Human-readable name. workflow_id: UUID of the ComfyUI workflow. workflow_version: Version label, e.g. "v1". hardware: One of TURING_16, AMPERE_24, AMPERE_48, ADA_48_PLUS, AMPERE_80, ADA_80_PLUS, HOPPER_141. min_instances: 0..30. Warm instance floor (billable if > 0). max_instances: 1..60. Concurrency ceiling. queue_size: >= 0. Pending requests before scaling up. keep_warm_duration_in_seconds: >= 0. Idle timeout.
delete_deployment
Permanently delete a deployment. Backs ``DELETE /prod/v2/deployments/{deployment_id}``. This cannot be undone. Consider ``update_deployment(is_enabled=false)`` to pause instead.
get_deployment
Get one deployment by ID. Backs ``GET /prod/v2/deployments/{deployment_id}``. Set include_payload=true to inspect the deployed workflow graph (workflow_api_json) and default overrides — use the node IDs and input names to build the ``overrides`` for ``submit_request``.
update_deployment
Partially update a deployment. Backs ``PATCH /prod/v2/deployments/{deployment_id}``. Only pass the fields you want to change. Set is_enabled=false to pause; true to re-enable.
request
get_request_result
Fetch a completed request's outputs. Backs ``GET /prod/v1/deployments/{deployment_id}/requests/{request_id}/result``. Output URLs are hosted for 7 days.
get_request_status
Poll a request's current status. Backs ``GET /prod/v1/deployments/{deployment_id}/requests/{request_id}/status``. Lifecycle: ``in_queue`` → ``in_progress`` → ``completed`` / ``cancelled``.
call
call_instance_proxy
Call a ComfyUI backend endpoint on a live instance. Backs ``POST /prod/v2/deployments/{deployment_id}/instances/{instance_id}/proxy/{path}``. Get the instance_id from ``get_request_status`` once the status is ``in_progress``. Common target: ``api/free`` with ``{"unload_models": true}`` to free GPU memory.
cancel
cancel_request
Cancel a queued or running request. Backs ``POST /prod/v1/deployments/{deployment_id}/requests/{request_id}/cancel``. Returns ``cancelled`` if accepted, ``not_cancellable`` if already done.
deployments
list_deployments
List Serverless API deployments in the caller's account. Backs ``GET /prod/v2/deployments``. Args: ids: Optional list of deployment IDs to filter to. include_payload: Include workflow_api_json, overrides, and object_info_url for each deployment. Larger response. include_readme: Include the deployment's README markdown.
submit
submit_request
Submit an async inference request to a deployment. Backs ``POST /prod/v1/deployments/{deployment_id}/inference``. Args: deployment_id: Target deployment. overrides: Partial graph keyed by node_id, e.g. ``{"6": {"inputs": {"text": "a cat"}}}``. Use ``get_deployment(include_payload=true)`` to discover node IDs and input names. workflow_api_json: Advanced — run a different workflow without updating the deployment. Omit ``overrides`` in this mode. extra_data: E.g. ``{"api_key_comfy_org": "comfyui-..."}`` for ComfyUI Core API nodes. webhook_url: Push-based updates instead of polling. webhook_intermediate_status: Fire webhooks on every status change, not just terminal. wait_for_completion: If true, poll until done and return the result inline. timeout_seconds: Max wait when wait_for_completion=true. File inputs: pass a public HTTPS URL or Base64 data URI directly in the overrides value, e.g. ``{"189": {"inputs": {"image": "https://example.com/photo.jpg"}}}`` or ``{"189": {"inputs": {"image": "data:image/jpeg;base64,/9j..."}}}``.

Endpoints

URLTransportStateLatencyChecked
https://mcp.runcomfy.com/mcp streamable-http sign-in 57 ms 5 min ago

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Runcomfy MCP — questions

Answers built from our own checks of this server.

What can Runcomfy MCP do?
It exposes 10 tools, read directly from the server on our last check. Among them: call_instance_proxy, cancel_request, create_deployment, delete_deployment, get_deployment, get_request_result and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is Runcomfy MCP mostly used for?
Its tools cluster around deployment and request. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Runcomfy MCP working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 70 ms. The bar chart above shows every period we have measured.
How do I connect Runcomfy MCP?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.
How do you sign in to Runcomfy MCP?
No API key is involved. Runcomfy MCP answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.
How fast is Runcomfy MCP?
It answers our handshake in 70 ms on average, which is faster than 97% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Runcomfy MCP open source?
The code is open source: it is published under the MIT licence, written in Python, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at mcp.runcomfy.com, which runs on its operator's own terms.