Carat Hunter

com.carathunterPublished by carathunter.comOfficial publisherv1.0.1Updated Oct 24, 2026

Latest prices for one certified diamond across 100+ retailers: search, cert lookup, market prices.

VerifiedStreamable HTTPWeb executableFinanceBusiness & Commerce

Overview

AI-generated overview

Carat Hunter lets an assistant search certified diamonds across 100+ retailers, look up grading certificates and compare confirmed prices.

What you can do
Search certified diamonds across retailers with specs, price range, retailer count and a Carat Hunter grade, up to 10 stones per query, with prices in a stated currency and the date last seen. Retrieve details and the latest confirmed price range for a single diamond by its Carat Hunter id. Look up a stone by grading report number (GIA, IGI, HRD, GCAL) to see whether retailers list it and at what price range. Get typical listed prices for a spec (carat, colour, clarity, shape, origin) with median, middle-half range and cross-retailer variation. See how many diamonds and retailers are currently tracked.
When to use it
Useful when comparing diamond prices before a purchase, checking whether a quoted price for a specific certificate is fair, or exploring typical market prices for a given specification.
Requirements
Remote MCP endpoint at carathunter.com over streamable HTTP; no authentication, environment variables or headers are declared. Network access to the endpoint is needed.
Before you install
Prices are the latest confirmed listings Carat Hunter has seen, dated, and may not reflect current retailer prices; treat them as reference, not a live quote. The server is read-only and asks for no credentials, but queries about specific certificates or specs are sent to a third party.

Installation

In SourceWeft

  1. Open Carat Hunter 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.carathunter%2Fdiamond-prices/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": {
    "carat-hunter": {
      "type": "http",
      "url": "https://carathunter.com/mcp"
    }
  }
}

Tools

5

search_diamonds

Search diamonds

Search certified diamonds listed by retailers worldwide, with the latest cross-retailer prices we have seen. Returns up to 10 stones with specs, the lowest and highest confirmed price for that exact stone with the date we last saw them, how many retailers list it and a Carat Hunter grade. Prices in US dollars. Retailer names are shown on carathunter.com after a free sign-up; always give the user the link.

Parameterspagesortshapecolouroriginclaritymax_caratmin_caratmax_price_usdmin_price_usd

get_diamond

Get a diamond

Details and the latest confirmed price range for one diamond, with the date we last saw it, by its Carat Hunter id (from search_diamonds or a carathunter.com URL).

Parametersidrequired

lookup_certificate

Look up a grading certificate

Find a diamond by its grading report number (GIA, IGI, HRD, GCAL...). Tells you whether retailers list that exact stone, how many, and the price range between them as of the date we last saw it. Useful to check whether a quoted price is fair.

Parameterscertificate_numberrequired

price_check

Market price for a diamond spec

Typical listed prices for a spec (carat size, colour, clarity, shape, origin) across all retailers Carat Hunter tracks, with the day they were measured: median, middle-half range, and how much the same stone varies between retailers. Carat sizes: 0.3, 0.5, 0.75, 1, 1.5, 2, 3, 5.

Parameterscaratrequiredshaperequiredcolourrequiredoriginrequiredclarityrequired

market_overview

Diamond market overview

How many diamonds and retailers Carat Hunter currently tracks, from its latest weekly market report.

Takes no parameters.

Version history

2
  1. v1.0.1LatestSep 30, 2026
  2. v1.0.0Sep 25, 2026

Score

83% 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
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.