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Mastering Extensions
Mastering Extensions provides MCP access to browse products and manage carts, checkout, and orders.
https://masteringextensions.com/Opens ChatGPT on the web or desktop and asks it to use the WebMCP tools available here.
Connect straight to this server’s public endpoint.
https://masteringextensions.com/api/ucp/mcpWe add this server to your workspace, then open Studio — saved access, one connection to many servers, with a history of what ran.
Last probed Sep 18, 2026 · masteringextensions.com
13tools discovered
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Get Checkout
get_checkoutReturns details about the checkout, including line items, totals, and any applicable discounts or taxes. Prices in the response are integers in the currency's ISO 4217 minor units, paired with a currency code: {"amount": 600, "currency": "USD"} is $6.00 and {"amount": 2500, "currency": "USD"} is $25.00. Convert to major units before quoting a price to a buyer (divide by 100 for two-decimal curren
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A working endpoint is step one. Directory coverage is the coordinated launch across ChatGPT, Claude, Cursor, the MCP Registry, and community indexes.
Directory coverage for brandsMastering Extensions provides MCP access to browse products and manage carts, checkout, and orders.
Use the MCP endpoint listed on this page in your MCP client configuration. One-click install pills support Claude, Cursor, VS Code, and other hosts. Copy the remote MCP URL if your client needs a manual entry.
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Other MCP servers in this category from the directory index
MCPBundles probed 13 tools on the live server. The tool list on this page reflects what was discovered at the last refresh — connect your client to see the full set available to your session.
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Read FastSpring order and subscription webhook JSON payloads in chat.
4 tools