GemsMakers Precision Scientific & Engineering Simulators

io.github.gemsmakersPublished by GitHub account gemsmakersv1.0.0Updated Nov 5, 2026

MCP server for GemsMakers precision scientific, horology, and engineering calculators.

VerifiedSTDIODesktop onlyFinanceDeveloper Tools

Overview

AI-generated overview

Local MCP server exposing five GemsMakers calculators for bullion, gemstone density, watch movements, beam deflection and fossil overlap.

What you can do
  • Compute precious metal content, troy ounces and melt value from weight, karat and spot price
  • Derive specific gravity from dry and submerged weights and match precious metal alloys
  • Work out watch escapement frequency, ticks per second and daily rate deviation
  • Calculate Euler-Bernoulli beam deflection, deflection limit ratio and maximum bending moment
  • Estimate chronostratigraphic overlap duration across two or more index fossil taxa
When to use it
Useful when an assistant needs quick, formula-based numbers in jewelry and bullion valuation, horology, structural engineering or paleontology, without leaving the chat to open a web calculator.
Requirements
Runs as a local stdio process, typically launched with npx from the gemsmakers-mcp-server npm package, so Node.js and network access for the package download are needed. No login, API keys or environment variables are declared.
Before you install
Results are calculator outputs, not professional appraisals or engineering sign-off; verify figures before using them for valuation, trading or structural decisions. The README also points to external GemsMakers web pages, which the server itself does not need.

Installation

In SourceWeft

  1. Open GemsMakers Precision Scientific & Engineering Simulators in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

GemsMakers Model Context Protocol (MCP) Server

[MCP Registry] [Glama MCP] [License: MIT] [Calculators]

Connect your AI agent (Claude Desktop, Cursor IDE, Windsurf, Claude Code, or any MCP-compatible runtime) directly to GemsMakers.com — the web's definitive suite of 2,700+ interactive precision scientific, engineering, horological, and bullion simulators.

Zero login. Zero API keys. Verified empirical formulas with KaTeX step-by-step mathematical proofs.

⚡ Quick Start

1. Official MCP Registry Installation

If using the MCP Registry CLI:

bash
mcp install io.github.gemsmakers/mcp-server

2. Claude Desktop Setup

Add this entry to your claude_desktop_config.json:

json
{  "mcpServers": {    "gemsmakers": {      "command": "npx",      "args": ["-y", "gemsmakers-mcp-server"]    }  }}

3. Cursor IDE Setup

Add this to your project .cursor/mcp.json:

json
{  "mcpServers": {    "gemsmakers": {      "command": "node",      "args": ["/path/to/gemsmakers-mcp-server/index.js"]    }  }}

🛠️ Included Production MCP Tools

ToolCapabilityScientific / Mathematical StandardLive Interactive Simulator
bullion_meltPure karat metal grams, troy ounces, fine fineness %, & live scrap valueASTM / LBMA Good Delivery Karat MathGold Calculators
specific_gravityArchimedean dry vs submerged mass alloy authenticationArchimedes Hydrostatic Specific Gravity StandardPrecious Metal Tests
watch_beat_mathEscapement frequency (Hz), ticks/sec, beat rate (BPH), & lift angle driftSwiss Horology escapement balance dynamicsHorology Hub
beam_deflectionEuler-Bernoulli maximum beam deflection, moment of inertia & bending stressAISC 15th Edition / Eurocode 3Civil Engineering
fossil_age_overlapConcurrent Range Zone chronostratigraphic stage identificationICS International Chronostratigraphic ChartPaleontology Lab

⚖️ Programmatic Matchups & Worked Queries

Explore over 150+ empirical head-to-head technical matchups and 200+ pre-calculated numeric problems:

📄 License

MIT © 2026 GemsMakers Atelier. Open source for researchers, engineers, and AI developers.

Source: README.md at commit c9c28a7

Tools

5

bullion_melt

Calculate fine pure precious metal content, troy ounces, and total intrinsic melt value given weight, karat/purity, and spot price.

Parameterskaratmetalweight_grequiredpurity_pctspot_per_ozrequired

specific_gravity

Compute Archimedean specific gravity from dry and submerged weights, displacement volume, and identify matching precious metal alloys.

Parametersweight_airrequiredweight_waterrequired

watch_beat_math

Calculate mechanical watch movement escapement frequency in Hertz, ticks per second, and daily rate deviation.

Parametersbphrequiredlift_anglerate_sec_day

beam_deflection

Calculate Euler-Bernoulli elastic beam maximum center deflection, deflection limit ratio (L/d), and maximum bending moment.

Parametersload_nrequiredlength_mrequiredinertia_cm4requiredelasticity_gparequired

fossil_age_overlap

Calculate chronostratigraphic Concurrent Range Zone overlap duration in millions of years across 2 or more index fossil taxa.

Parameterstaxarequired

Version history

1
  1. v1.0.0LatestNov 5, 2026

Score

90% 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 days25 pts
  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts