ExactMelt

com.exactmeltPublished by exactmelt.comOfficial publisherv3.0.0Updated Nov 3, 2026

Metal and coin melt values

VerifiedStreamable HTTPWeb executable

Overview

ExactMelt's hosted MCP server (exactmelt.com), published by exactmelt.com; no sign-in required; Streamable HTTP; 6 tools.

No AI overview yet: these facts come from the registry entry and the server itself.

Publisher
exactmelt.com
Endpoint
exactmelt.com
Last checked

Installation

In SourceWeft

  1. Open ExactMelt in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.exactmelt%2Fexactmelt-com/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

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

README

ExactMelt 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.

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)
json
{ "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.

ToolWhat it does
calculate_melt_valuePrecious-metal melt value, fine content, unit rates and an optional buyer-offer comparison
calculate_coin_valueCoin melt value and fine-metal content by quantity, standard rolls or measured grams
find_coinsCoin presets with issue years, specifications and current melt value per coin
get_coinOne coin preset with its specifications and a quantity-one melt calculation
calculate_exchangeGold-to-silver or silver-to-gold exchange weight at current quotes
calculate_penny_nickelPenny 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.

Source: README.md at commit 560529d

Tools

6

calculate_melt_value

Calculate metal melt value

Precious-metal melt value, fine content, unit rates and optional buyer-offer comparison from metal, purity, weight and construction. Includes current website quotes and a prefilled PDF-report link. Custom spot prices and mixed worksheets are supported.

ParameterslotfeesspotunitrequiredbasisrequiredmetalrequiredofferpurityrequiredweightrequiredassayBasisconstructionlayerDenominator

calculate_coin_value

Calculate coin melt value

Coin melt value and fine-metal content from a native coin issue, quantity or standard rolls, and optional measured total grams. Includes current website quotes, optional buyer-offer comparison and a prefilled PDF-report link.

ParameterscoinrequiredfeesspotofferrollsquantitymeasuredGrams

find_coins

Find coins

Native precious-metal coin presets with issue years, images, metal specifications and current melt value per coin, filtered by name or metal.

ParametersmetalquerycursorpageSize

get_coin

Get coin

A native precious-metal coin preset with issue years, image, specifications and a quantity-one melt calculation at the current website quote.

Parametersidrequired

calculate_exchange

Calculate gold–silver exchange

Gold-to-silver or silver-to-gold exchange weight at current website quotes, including sale discount, purchase premium and fees. Includes a prefilled PDF-report link.

Parametersfeesgoldunitrequiredsilverweightrequiredpremiumdiscountdirectionrequired

calculate_penny_nickel

Calculate penny or nickel metal value

Penny or nickel alloy metal value from count or measured total grams and explicit manual base-metal prices in USD per ordinary pound. Includes constituent weights, face value and a prefilled PDF-report link.

ParameterskindrequiredzincalloycountrequiredcopperrequirednickelmeasuredGrams

Version history

1
  1. v3.0.0LatestNov 3, 2026

Score

75% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts

    Write a description of at least 40 characters in the registry entry.

  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.