Lassocut MCP server

LassoCut MCP

Remove image backgrounds from your AI assistant with a LassoCut account. The API is compatible with the remove.bg API.

What it does

Ask Claude (or any MCP-compatible assistant) to cut out product photos, portraits, whole folders, or images from a URL. Results are saved next to the originals as -no-bg. and existing files are never overwritten — a name already taken gets -2, -3, and so on instead.

By default, every image is processed as a low-cost preview (0.25 credit, 50 free a month, up to 10 a day). Full-size output costs 1 credit per image and is only used when you explicitly ask for it; above 10 full-size images, the assistant must show you the cost and get your OK first.

Install

Claude Desktop: download lassocut.mcpb and double-click it.

Claude Code:

claude mcp add lassocut -- npx -y lassocut-mcp

On Windows: claude mcp add lassocut -- cmd /c npx -y lassocut-mcp

Cursor / Windsurf (or any other MCP client that reads a JSON config):

{ "mcpServers": { "lassocut": { "command": "npx", "args": ["-y", "lassocut-mcp"] } } }

Requires Node.js 20 or later.

Sign in

You need a LassoCut account and API key. Three ways to connect:

1. Ask the assistant to sign in. It calls the signin tool, which opens the LassoCut approval page in your browser and returns the approval link and a short code right away. Approve the connection in the browser, then ask the assistant to check your credits (getcredits) — the key is saved automatically in the background (the approval window stays open for a few minutes).
2. Already signed in with the lassocut command-line tool? This connector reads the same saved key from lassocut login, so no extra step is needed.
3. Set the LASSOCUTAPIKEY environment variable (or the api_key field in Claude Desktop's extension settings) to a key from your LassoCut account page. This always takes precedence over a signed-in key.

Tools

remove_background

Remove the background of one or more images.

Files larger than 22 MB are skipped. Up to 3 small thumbnails are returned inline with the result.

get_credits

Shows your current credit balance and the free previews available now (50 a month, up to 10 a day).

sign_in

Connects a LassoCut account: opens the approval page in your browser and returns immediately with the link and code so you can approve at your own pace. Pass force: true to switch to a different account.

Credits and safety

• Previews are the default everywhere; full-size output is never used unless asked for.
• Requesting full size for more than 10 images at once requires an explicit confirmation, with the cost shown up front.
• If your balance is too low for a full-size request, it is refused before any image is sent.
• Files are only ever sent to the LassoCut API — see Privacy below.

Privacy

Shortened. The full README is on GitHub.