MCP server

Diamond

io.github.JacobiusMakes/diamond-mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Sourced diamond and gemology tools for AI assistants, with 90 encyclopedia entries.

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

11

Token cost

About 1,643 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http diamond-mcp https://diamond-mcp.stienhardt.workers.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.diamond-mcp]
url = "https://diamond-mcp.stienhardt.workers.dev/mcp"

Gemini CLI

{"mcpServers":{"diamond-mcp":{"httpUrl":"https://diamond-mcp.stienhardt.workers.dev/mcp"}}}

Cursor

{"mcpServers":{"diamond-mcp":{"url":"https://diamond-mcp.stienhardt.workers.dev/mcp"}}}

VS Code

{"servers":{"diamond-mcp":{"type":"http","url":"https://diamond-mcp.stienhardt.workers.dev/mcp"}}}

Antigravity

agy mcp add diamond-mcp https://diamond-mcp.stienhardt.workers.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"diamond-mcp","server_url":"https://diamond-mcp.stienhardt.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"diamond-mcp","server_url":"https://diamond-mcp.stienhardt.workers.dev/mcp"}

Tools

• about_stienhardt ~68 tokens
  Plain fact sheet about Stienhardt, the New York City Lab Grown Diamond brand that publishes this server. Every fact carries a source and a date.
• compare_diamonds ~280 tokens
  Compare two to five diamonds from any seller using supplied carat, measured millimeters and prices. Returns ratios, price per carat, differences and missing information. Never verifies specifications, ranks beauty, appraises value or declares a best diamond. Prices must use explicit currencies; mixe
• define ~167 tokens
  Look up a single diamond or gemology term in the encyclopedia of 90 fact-checked and sourced entries. Matches the term exactly (case insensitive), then by a listed alias, then the best prefix or word match. Returns the full entry: definition, body, sourced claims, and related terms. If nothing match
• dutch_marquise_definition ~92 tokens
  The published definition of the Dutch Marquise diamond cut: geometry, certificate wording, and the measured length to width ratio of a certified reference stone. A Dutch Marquise is an elongated hexagonal cut diamond.
• faceup_size ~187 tokens
  Approximate face up millimeter dimensions for a diamond of a given shape and carat weight. Supported shapes: round, oval, emerald, dutch_marquise. Scales vetted 1 carat anchors by the cube root of the carat weight. Typical proportions, not a guarantee: verify a specific stone on its grading report.
• get_product ~126 tokens
  Full detail for one Stienhardt product by id (as returned by search_inventory): title, price, availability, options, images, and the product URL on stienhardt.com. Loose-diamond availability is not verified.
• lab_grown_grading_landscape ~71 tokens
  The current state of who grades Lab Grown Diamonds and how: GIA, IGI, HRD Antwerp, and the FTC position. Every item carries a source and a date.
• lab_grown_price_index ~68 tokens
  The latest tracked retail price reading for Lab Grown Diamonds, with source and date. Market context for shoppers, not investment guidance.
• search_encyclopedia ~175 tokens
  Keyword search across the 90 entry diamond and gemology encyclopedia. Ranks case insensitive keyword hits by field, weighting the term above the definition above the body. Returns the best matches as term, category, and a definition snippet. Use define to fetch a full entry.
• search_inventory ~243 tokens
  Search Stienhardt's public Shopify catalog of engagement ring settings and fine jewelry (New York, direct). Loose-diamond stock cannot be verified here; those searches return public catalog listings flagged availability_verified false plus a storefront browsing link. Returns public catalog prices, s
• verify_diamond_report ~166 tokens
  Returns the official verification URL and a three step checklist for confirming a diamond grading report with the lab that issued it. Supports GIA, IGI, and GCAL. This tool never verifies anything itself. It tells you where and how.

Browse

• GitHub tools
• Online shops
• GitHub and code hosting

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