MCP server

Seller Toolbelt Official

com.sellertoolbelt/mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Check and fix Amazon, eBay and Etsy product images, calculate marketplace fees, look up barcodes.

Working at last checkVerified publisher: sellertoolbelt.comAbout 3,274 tokens per request once connected11 tools

Website

https://sellertoolbelt.com/api/mcp

At a glance

Type: MCP server
Publisher: sellertoolbelt.com (verified by the MCP Registry)
Status: Working at last check
Tools: 11
Token cost: About 3,274 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http sellertoolbelt https://sellertoolbelt.com/api/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.sellertoolbelt]
url = "https://sellertoolbelt.com/api/mcp"

Gemini CLI

{"mcpServers":{"sellertoolbelt":{"httpUrl":"https://sellertoolbelt.com/api/mcp"}}}

Cursor

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

VS Code

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

Antigravity

agy mcp add sellertoolbelt https://sellertoolbelt.com/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"sellertoolbelt","server_url":"https://sellertoolbelt.com/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"sellertoolbelt","server_url":"https://sellertoolbelt.com/api/mcp"}

Tools

add_watermark ~398 tokens
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 credits (then call get_result). With an API key (Authorizatio
calculate_marketplace_fees ~402 tokens
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%), home (15%), toys (15%), books (15%); ebay: default (13.25%), el
change_background_color ~368 tokens
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 human opens to download the full-resolution file for site credi
check_listing_image ~258 tokens
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 text/watermarks). Measured from the actual pixels, not guessed by a
convert_image ~334 tokens
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 opens to download the full-resolution file for site credits (the
generate_qr_code ~183 tokens
Generates a QR code image (PNG) or SVG markup for any text or URL, e.g. for packaging inserts, product labels or invoices. Free.
get_result ~228 tokens
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. Anonymous results expire 24h after creation unless claimed.
lookup_barcode ~113 tokens
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.
make_compliant_main_image ~338 tokens
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 free watermarked preview (≤700px) plus unlock_url, which a hum
remove_background ~272 tokens
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 get_result). With an API key (Authorization: Bearer stb_…): retu
resize_for_marketplace ~380 tokens
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 free watermarked preview (≤700px) plus unlock_url, which a hum

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