ExactMelt
com.exactmelt/exactmelt-comexactmelt.comstreamable-httpv3.0.0Scanned
Metal and coin melt values
6 tools: 4 change things and 2 only read.
- Reads private data · 0
- Reads text others write · 2
- Can send data out · 0
- No findings
Anlyon alternative
4 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
6 tools
Changes things 4Claude Code: ask
calculate_coin_valueCoin melt value and fine-metal content from a native coin issue, quantity or standard rolls, and optional measured total grams.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it 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.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Calculate coin melt value
calculate_exchangeGold-to-silver or silver-to-gold exchange weight at current website quotes, including sale discount, purchase premium and fees.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it 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.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Calculate gold–silver exchange
calculate_melt_valuePrecious-metal melt value, fine content, unit rates and optional buyer-offer comparison from metal, purity, weight and construction.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it 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.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Calculate metal melt value
calculate_penny_nickelPenny or nickel alloy metal value from count or measured total grams and explicit manual base-metal prices in USD per ordinary pound.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it 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.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Calculate penny or nickel metal value
Only reads 2Show 2 read-only tools
find_coinsNative precious-metal coin presets with issue years, images, metal specifications and current melt value per coin, filtered by name or metal.Reads text others writeNo findings
Why it is in this group
- The name "find_coins" says "find": a word for reading.
What it can reach
- untrusted-inputThe description's first sentence says "issue": it reads issues, which other people can write.
Description, as the server wrote it Native precious-metal coin presets with issue years, images, metal specifications and current melt value per coin, filtered by name or metal.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Find coins
get_coinA native precious-metal coin preset with issue years, image, specifications and a quantity-one melt calculation at the current website quote.Reads text others writeNo findings
Why it is in this group
- The name "get_coin" says "get": a word for reading.
What it can reach
- untrusted-inputThe description's first sentence says "issue": it reads issues, which other people can write.
Description, as the server wrote it A native precious-metal coin preset with issue years, image, specifications and a quantity-one melt calculation at the current website quote.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Get coin
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write2
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 3.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http exactmelt-com https://exactmelt.com/api/mcpclaude mcp add --transport http exactmelt-com https://exactmelt.com/api/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__exactmelt-com__find_coins",
"mcp__exactmelt-com__get_coin"
],
"ask": [
"mcp__exactmelt-com__calculate_melt_value",
"mcp__exactmelt-com__calculate_coin_value",
"mcp__exactmelt-com__calculate_exchange",
"mcp__exactmelt-com__calculate_penny_nickel"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as exactmelt-com. Review it before you use it.
Capability tags behind 2 rules
- mcp__exactmelt-com__find_coins untrusted-input
- mcp__exactmelt-com__get_coin untrusted-input
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/com.exactmelt/exactmelt-com/verify?hash=6776c91d438fbe2385dde8a7e055178a6157fbb6ea507df0b0f1881c8b2f7206" | jq -e '.changed == false'Pinned hash 6776c91d438f, from Nov 2, 2026, 15:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.exactmelt/exactmelt-com/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.exactmelt/exactmelt-com)Source: MCP Registry · repository. Synced Nov 2, 2026, 15:17 UTC.