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NeqSim MCP Server

MCP serverOfficial

Equinor's own MCP server for NeqSim: flashes, phase envelopes and JSON-defined process runs. By Equinor.

163 starsUpdated 1 day agoGitHub data from 5 Nov 2026

At a glance

Type
MCP server
Works with
NeqSim
How it connects
Drives a running copy of the tool
Access
Read-only or read-write (configurable)
Tool versions
Released with each NeqSim version (runner jar 3.28.0 at this check); Java 21+ or Docker
Operating systems
Windows, macOS, Linux
Needs a NeqSim licence
No
Transport
Local (stdio), Remote (HTTP)
AI clients documented
Claude Desktop, VS Code (GitHub Copilot), Cursor
Licence
Apache-2.0
Language
Java

What it can do

  • Runs NeqSim calculations in the server process itself, such as TP, PH and dew or bubble point flashes, hydrate checks, property tables over a temperature or pressure range and full PT phase envelopes.
  • Simulates a process (for example separator then compressor) from a JSON definition, and calculates gas and oil quality to the ISO, AGA, GPA and EN standards it supports.
  • Groups its tools into three maturity tiers (24 trusted, 32 advanced, 15 experimental) and four deployment profiles that switch tiers off, add an approval gate or make the server advisory only.
  • Attaches provenance to every answer, including the equation of state used, convergence status, assumptions and validation warnings.

Limitations

  • It works on NeqSim's own thermodynamic and process models; it does not connect to a commercial simulator or to plant control systems.
  • The jar path needs Java 21 or later, and on Windows you must pass the UTF-8 flags shown in the docs or the stdio stream can break.
  • The HTTP transport has no authentication unless you switch on the enterprise profile and configure OIDC.

Install

java -Dfile.encoding=UTF-8 -Dstdout.encoding=UTF-8 -Dquarkus.profile=stdio \
     -jar /path/to/neqsim-mcp-server-3.12.1-runner.jar          # jar
docker run -i --rm ghcr.io/equinor/neqsim-mcp-server:latest    # docker

Source: github.com/equinor/neqsim/tree/master/neqsim-mcp-server#cursor--other-mcp-clients

MCP servers and skills run code on your computer. Review the source before installing.

AI-generated models, drawings and results must be checked by a qualified engineer before use.