Toolbelt MCP server

Which servers in the official MCP registry are Toolbelt's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-19

← Back to Toolbelt

Whose server it is

Registry namecom.sellertoolbelt/mcpverified in the MCP registry

The registry name sits under sellertoolbelt.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-19

Stateanswerschecked 2026-10-19
Tools11
Server calls itselfsellertoolbelt
Server version1.0.0
Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 182 ms.

Measured dailydaily checks: 1, the first on 2026-10-19

Answeredmeasuring1 of the 7 daily checks it takes to print a share
Median first answer535 ms
Space in an agent's context≈ 2,864 tokensthe definitions of all its tools (11), which an agent carries on every turn
Tool definitionsB · 85 of 100

Parameters without a description: in 10 of 11

Worth a look

Tools that delete, send or pay without telling the client so: remove_background
Tools that change data, on a server that answers without a sign-in: remove_background, add_watermark

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The state of vendors' MCP servers: method and numbers →

Tools it offers11 tools · read 2026-10-19

check_listing_image
Deterministically checks whether a product photo meets the main-image requirements of Amazon, eBay or Etsy (pure white background, product fill, minimum resolution, file format, colour space, borders, aspect ratio, sharpness, stray…
calculate_marketplace_fees
Computes selling fees, net profit, margin and ROI for one sale on Amazon, eBay or Etsy from the sale price, shipping and costs. Category sets the default fee rate: amazon: default (15%), electronics (8%), computers (7%), clothing (17%)…
lookup_barcode
Finds product details (title, brand, category, image, description) for a UPC, EAN or GTIN barcode, using open product catalogs (strong for UK/EU groceries, drinks and cosmetics). Free.
generate_qr_code
Generates a QR code image (PNG) or SVG markup for any text or URL, e.g. for packaging inserts, product labels or invoices. Free.
make_compliant_main_image
Removes the background, centres and scales the product on pure white, sizes and encodes it to the marketplace spec (Amazon, eBay or Etsy), then re-checks the result and returns the per-rule verdict as proof. Without an API key: returns a…
remove_background
Cuts the product out of its background and returns a transparent PNG. Without an API key: returns a free watermarked preview (≤700px) plus unlock_url, which a human opens to download the full-resolution file for site credits (then call…
change_background_color
Removes the background and places the product on a solid colour: white, light_gray, gray, black, beige, studio_blue, soft_pink, or custom with hex. Without an API key: returns a free watermarked preview (≤700px) plus unlock_url, which a…
resize_for_marketplace
Fits the image onto an exact canvas, padding with white: amazon (2000×2000), ebay (1600×1600), etsy (2000×2000), square (1080×1080), instagram_portrait (1080×1350), story (1080×1920), or custom width/height. Without an API key: returns a…
convert_image
Re-encodes an image as jpeg, png, webp, avif at a chosen quality, to change format or shrink file size. JPEG flattens transparency to white. Without an API key: returns a free watermarked preview (≤700px) plus unlock_url, which a human…
add_watermark
Stamps text (e.g. "© Your Brand") on an image in a corner, the centre, or tiled diagonally. Without an API key: returns a free watermarked preview (≤700px) plus unlock_url, which a human opens to download the full-resolution file for site…
get_result
Checks a job created by one of the image tools. Returns download_url once it is unlocked (API-key jobs are paid up front; anonymous ones by a human via unlock_url). Otherwise returns the status, preview_url and unlock_url. Never charges…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "sellertoolbelt": {
      "type": "http",
      "url": "https://sellertoolbelt.com/api/mcp"
    }
  }
}

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.