About ExactMelt
ExactMelt is a metal and coin melt-value service for ChatGPT, Claude, and other MCP clients. It calculates values by weight, purity, quantity, or rolls, and links each result to a prefilled PDF report.
Key features
- 01Calculate precious-metal value and content
- 02Value coins by quantity or rolls
- 03Look up coin specifications and presets
- 04Calculate gold-to-silver exchange weight
- 05Link to prefilled PDF reports
Use cases
- 01Estimate a ring or jewelry's metal value
- 02Calculate melt value for a coin batch
- 03Compare a buyer's offer with metal value
- 04Calculate gold exchanged for silver
MCP support
This hosted MCP connector provides read-only calculation and lookup tools over Streamable HTTP, with no authentication required.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://exactmelt.com/api/mcpclaude mcp add --transport http com-exactmelt-exactmelt-com https://exactmelt.com/api/mcp{"mcpServers":{"com-exactmelt-exactmelt-com":{"type":"http","url":"https://exactmelt.com/api/mcp"}}}Open in Cursor{"servers":{"com-exactmelt-exactmelt-com":{"type":"http","url":"https://exactmelt.com/api/mcp"}}}Open in VS Code{"mcpServers":{"com-exactmelt-exactmelt-com":{"type":"http","url":"https://exactmelt.com/api/mcp"}}}{"mcpServers":{"com-exactmelt-exactmelt-com":{"serverUrl":"https://exactmelt.com/api/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
Details
From the project READMEExactMelt MCP app
ExactMelt values metals and coins inside ChatGPT, Claude and other MCP clients. Enter weight, purity, quantity or rolls, compare a buyer's offer, exchange gold and silver, or build a mixed worksheet. Every result links to a prefilled PDF report on exactmelt.com.
- Website: https://exactmelt.com
- Documentation: https://exactmelt.com/app
- Privacy: https://exactmelt.com/privacy
- Terms: https://exactmelt.com/terms
This repository documents the hosted connector. It does not contain the website or its code.
Connect
- Endpoint:
https://exactmelt.com/api/mcp - Transport: Streamable HTTP
- Authentication: none (no account, sign-in or API key)
{ "mcpServers": { "exactmelt": { "url": "https://exactmelt.com/api/mcp" } } }
In ChatGPT, add it as a custom app/connector with no authentication. In Claude, open Customize → Connectors → Add custom connector and enter the URL.
Tools
All tools are read-only.
| Tool | What it does |
|---|---|
calculate_melt_value | Precious-metal melt value, fine content, unit rates and an optional buyer-offer comparison |
calculate_coin_value | Coin melt value and fine-metal content by quantity, standard rolls or measured grams |
find_coins | Coin presets with issue years, specifications and current melt value per coin |
get_coin | One coin preset with its specifications and a quantity-one melt calculation |
calculate_exchange | Gold-to-silver or silver-to-gold exchange weight at current quotes |
calculate_penny_nickel | Penny or nickel alloy metal value at the base-metal prices you enter |
Try asking
- "What's my 14K ring worth, 5.2 grams?"
- "Calculate the melt value of 10 Morgan dollars."
- "Exchange 1 troy ounce of gold for silver at current spot."
Report an issue
Open an issue in this repository or email [email protected].
License
The documentation files in this repository are MIT licensed (see LICENSE). The ExactMelt website, its content, data and brand are not covered by this license.
Comments
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