Releases · equinor/neqsim

05 Jun 13:46

v3.13.0

28eb7ca

NeqSim 3.13.0 Latest

Latest

What is NeqSim?

NeqSim is an open-source Java library for thermodynamic fluid properties, phase equilibrium, PVT calculations, and process simulation. It is used to model fluids and process equipment such as separators, compressors, heat exchangers, pipelines, wells, and complete flowsheets.

This release ships both the core NeqSim simulation engine and the MCP server distribution that lets MCP-compatible AI clients call governed NeqSim calculation tools.

What is included in this release

Distribution	Asset	Runtime	Use this when
NeqSim core library	`neqsim-3.13.0.jar`	Java 17+	You need Java 17 or Python `neqsim-python` compatibility.
NeqSim core library	`neqsim-3.13.0-Java8.jar`	Java 8+	You need Java 8 or Python `neqsim-python` compatibility.
NeqSim MCP server	`neqsim-mcp-server-3.13.0-runner.jar`	Java 21+	You want VS Code Copilot, Claude Desktop, Cursor, or another MCP client to use NeqSim tools.
NeqSim MCP server checksum	`neqsim-mcp-server-3.13.0-runner.jar.sha256`	-	You want to verify the downloaded MCP runner jar.
NeqSim MCP server container	`ghcr.io/equinor/neqsim-mcp-server:3.13.0`	Docker	You want to run the MCP server without installing Java locally.

Install the MCP server

The MCP server gives MCP-compatible LLM clients access to validated thermodynamic and process simulation tools through a governed tool interface.

Jar install (requires Java 21+)

VERSION=3.13.0
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Docker install

docker pull ghcr.io/equinor/neqsim-mcp-server:3.13.0

Claude Desktop example

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.13.0-runner.jar"]
    }
  }
}

See the MCP Server README for VS Code Copilot, Cursor, Docker, Streamable HTTP, and deployment-profile configuration.

Use the core Java library

Use the release assets above when you need standalone jars. For Maven projects, use the published package dependency:

<dependency>
  <groupId>com.equinor.neqsim</groupId>
  <artifactId>neqsim</artifactId>
  <version>3.13.0</version>
</dependency>

Release notes

GitHub-generated release notes are included with this release and list the commits and pull requests since the previous version.

What's Changed

cleanup by @asmfstatoil in #2249
fix: typo cricondebar -> cricondenbar by @asmfstatoil in #2251
chore: do not call clean display from lib code by @asmfstatoil in #2250
Fix critical point flash: symmetric eigen solver and Heidemann-Khalil objective by @EvenSol in #2253
refact: convert example to test by @asmfstatoil in #2252
EOS update by @EvenSol in #2255
update mcp by @EvenSol in #2256
Improve UMR-PRU EOS: fix base constructor, refactor table routing, add docs and regression test by @EvenSol in #2257

Full Changelog: v3.12.1...v3.13.0

Contributors

asmfstatoil and EvenSol

Assets 8

01 Jun 20:12

github-actions

v3.12.1

4d4eca1

NeqSim 3.12.1

What is NeqSim?

This release ships both the core NeqSim simulation engine and the MCP server distribution that lets MCP-compatible AI clients call governed NeqSim calculation tools.

What is included in this release

Distribution	Asset	Runtime	Use this when
NeqSim core library	`neqsim-3.12.1.jar`	Java 21+	You need Java 21 or Python `neqsim-python` compatibility.
NeqSim core library	`neqsim-3.12.1-Java8.jar`	Java 8+	You need Java 8 or Python `neqsim-python` compatibility.
NeqSim MCP server	`neqsim-mcp-server-3.12.1-runner.jar`	Java 21+	You want VS Code Copilot, Claude Desktop, Cursor, or another MCP client to use NeqSim tools.
NeqSim MCP server checksum	`neqsim-mcp-server-3.12.1-runner.jar.sha256`	-	You want to verify the downloaded MCP runner jar.
NeqSim MCP server container	`ghcr.io/equinor/neqsim-mcp-server:3.12.1`	Docker	You want to run the MCP server without installing Java locally.

Install the MCP server

The MCP server gives MCP-compatible LLM clients access to validated thermodynamic and process simulation tools through a governed tool interface.

Jar install (requires Java 21+)

VERSION=3.12.1
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Docker install

docker pull ghcr.io/equinor/neqsim-mcp-server:3.12.1

Claude Desktop example

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.12.1-runner.jar"]
    }
  }
}

See the MCP Server README for VS Code Copilot, Cursor, Docker, Streamable HTTP, and deployment-profile configuration.

Use the core Java library

Use the release assets above when you need standalone jars. For Maven projects, use the published package dependency:

<dependency>
  <groupId>com.equinor.neqsim</groupId>
  <artifactId>neqsim</artifactId>
  <version>3.12.1</version>
</dependency>

Release notes

GitHub-generated release notes are included with this release and list the commits and pull requests since the previous version.

What's Changed

Agent improvements by @EvenSol in #2239
update private agents and skills by @EvenSol in #2240
Bump org.apache.maven.plugins:maven-enforcer-plugin from 3.6.2 to 3.6.3 by @dependabot[bot] in #2206
Skillsupdate by @EvenSol in #2241
Bump org.apache.maven.plugins:maven-surefire-plugin from 3.5.5 to 3.5.6 by @dependabot[bot] in #2244
Bump org.apache.maven.plugins:maven-failsafe-plugin from 3.5.5 to 3.5.6 by @dependabot[bot] in #2245
chore: bump environments used in ci. by @asmfstatoil in #2247
refact: replace java11 with java21, do not create java11 version by @asmfstatoil in #2246
Water oil emulsions by @EvenSol in #2248

Full Changelog: v3.12.0...v3.12.1

Contributors

dependabot, asmfstatoil, and EvenSol

Assets 8

30 May 15:06

github-actions

v3.12.0

70850c7

NeqSim 3.12.0

What is NeqSim?

This release ships both the core NeqSim simulation engine and the MCP server distribution that lets MCP-compatible AI clients call governed NeqSim calculation tools.

What is included in this release

Distribution	Asset	Runtime	Use this when
NeqSim core library	`neqsim-3.12.0.jar`	Java 11+	You want the default standalone Java library.
NeqSim core library	`neqsim-3.12.0-Java8.jar`	Java 8+	You need Java 8 or Python `neqsim-python` compatibility.
NeqSim core library	`neqsim-3.12.0-Java21.jar`	Java 21+	You run on the latest LTS JDK.
NeqSim MCP server	`neqsim-mcp-server-3.12.0-runner.jar`	Java 17+	You want VS Code Copilot, Claude Desktop, Cursor, or another MCP client to use NeqSim tools.
NeqSim MCP server checksum	`neqsim-mcp-server-3.12.0-runner.jar.sha256`	-	You want to verify the downloaded MCP runner jar.
NeqSim MCP server container	`ghcr.io/equinor/neqsim-mcp-server:3.12.0`	Docker	You want to run the MCP server without installing Java locally.

Install the MCP server

The MCP server gives MCP-compatible LLM clients access to validated thermodynamic and process simulation tools through a governed tool interface.

Jar install (requires Java 17+)

VERSION=3.12.0
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Docker install

docker pull ghcr.io/equinor/neqsim-mcp-server:3.12.0

Claude Desktop example

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.12.0-runner.jar"]
    }
  }
}

See the MCP Server README for VS Code Copilot, Cursor, Docker, Streamable HTTP, and deployment-profile configuration.

Use the core Java library

Use the release assets above when you need standalone jars. For Maven projects, use the published package dependency:

<dependency>
  <groupId>com.equinor.neqsim</groupId>
  <artifactId>neqsim</artifactId>
  <version>3.12.0</version>
</dependency>

Release notes

GitHub-generated release notes are included with this release and list the commits and pull requests since the previous version.

What's Changed

fix TPflash error by @EvenSol in #2219
Feature/h2 production h3 foundations by @EvenSol in #2223
Add Horizon-1 hydrogen production capabilities by @EvenSol in #2221
h2 updates by @EvenSol in #2225
update turbine simulations by @EvenSol in #2229
fix: stability-trial NaN guard + compressor/valve MPC guard + bounded anti-surge step by @EvenSol in #2233
Improve/antisurge low flow by @EvenSol in #2234
deactivate non flow sections by @EvenSol in #2236
Agentic process engineering v1 by @EvenSol in #2237
docs: Auto-convert notebooks to Markdown by @github-actions[bot] in #2238

Full Changelog: v3.11.0...v3.12.0

Contributors

EvenSol

Assets 11

26 May 05:42

github-actions

v3.11.0

d37b5df

NeqSim 3.11.0

What is NeqSim?

This release ships both the core NeqSim simulation engine and the MCP server distribution that lets MCP-compatible AI clients call governed NeqSim calculation tools.

What is included in this release

Distribution	Asset	Runtime	Use this when
NeqSim core library	`neqsim-3.11.0.jar`	Java 11+	You want the default standalone Java library.
NeqSim core library	`neqsim-3.11.0-Java8.jar`	Java 8+	You need Java 8 or Python `neqsim-python` compatibility.
NeqSim core library	`neqsim-3.11.0-Java21.jar`	Java 21+	You run on the latest LTS JDK.
NeqSim MCP server	`neqsim-mcp-server-3.11.0-runner.jar`	Java 17+	You want VS Code Copilot, Claude Desktop, Cursor, or another MCP client to use NeqSim tools.
NeqSim MCP server checksum	`neqsim-mcp-server-3.11.0-runner.jar.sha256`	-	You want to verify the downloaded MCP runner jar.
NeqSim MCP server container	`ghcr.io/equinor/neqsim-mcp-server:3.11.0`	Docker	You want to run the MCP server without installing Java locally.

Install the MCP server

The MCP server gives MCP-compatible LLM clients access to validated thermodynamic and process simulation tools through a governed tool interface.

Jar install (requires Java 17+)

VERSION=3.11.0
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Docker install

docker pull ghcr.io/equinor/neqsim-mcp-server:3.11.0

Claude Desktop example

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.11.0-runner.jar"]
    }
  }
}

See the MCP Server README for VS Code Copilot, Cursor, Docker, Streamable HTTP, and deployment-profile configuration.

Use the core Java library

Use the release assets above when you need standalone jars. For Maven projects, use the published package dependency:

<dependency>
  <groupId>com.equinor.neqsim</groupId>
  <artifactId>neqsim</artifactId>
  <version>3.11.0</version>
</dependency>

Release notes

GitHub-generated release notes are included with this release and list the commits and pull requests since the previous version.

What's Changed

Bump org.apache.logging.log4j:log4j-api from 2.25.4 to 2.26.0 by @dependabot[bot] in #2166
Bump org.apache.logging.log4j:log4j-core from 2.25.4 to 2.26.0 by @dependabot[bot] in #2167
Bump actions/github-script from 7 to 9 by @dependabot[bot] in #2169
Fix total condenser mass balance with reflux ratio by @EvenSol in #2156
Improve json by @EvenSol in #2172
matrix solver dist columns by @EvenSol in #2179
Bug fix by @EvenSol in #2178
speed improvements process model by @EvenSol in #2177
Disttest3 by @EvenSol in #2184
NeqSim phaseToSystem("gas") by @EvenSol in #2187
fix flash bug by @EvenSol in #2188
Bump actions/upload-artifact from 4 to 7 by @dependabot[bot] in #2168
Port MCP agentic workflow improvements onto current master by @EvenSol in #2190
Update Distillation Column by @Sviatose in #2192
[codex] fix calculated EOS kij cube-root handling by @EvenSol in #2193
[codex] speed up flash calculations by @EvenSol in #2194
update automation API by @EvenSol in #2196
update books by @EvenSol in #2195
[codex] Improve distillation solver speed by @EvenSol in #2199
fix error compressor by @EvenSol in #2200
update agentic by @EvenSol in #2197
Process optimization by @EvenSol in #2198
[codex] Cache process execution plans by @EvenSol in #2201
[codex] Improve two-fluid validation and reporting by @EvenSol in #2202
error in speed update by @EvenSol in #2203
fix errors by @EvenSol in #2205
[codex] Fix power generation and MSHE regressions by @EvenSol in #2211
Bump actions/download-artifact from 4 to 8 by @dependabot[bot] in #2207
Bump actions/upload-artifact from 4 to 7 by @dependabot[bot] in #2209
Bump actions/checkout from 4 to 6 by @dependabot[bot] in #2210
[codex] Fix unit SI value conversions by @EvenSol in #2213
[codex] fix alarm config non-finite timing values by @EvenSol in #2212
[codex] Validate pipe builder units by @EvenSol in #2215
[codex] Implement length and time unit conversions by @EvenSol in #2214
Bump actions/setup-java from 4 to 5 by @dependabot[bot] in #2208
Improve TwoFluidPipe transient settling tests by @EvenSol in #2216
books update by @EvenSol in #2217
Mcp22 by @EvenSol in #2218

Full Changelog: v3.10.0...v3.11.0

Contributors

dependabot, EvenSol, and Sviatose

Assets 11

11 May 02:33

github-actions

v3.10.0

2ff7406

NeqSim 3.10.0

What is NeqSim?

This release ships both the core NeqSim simulation engine and the MCP server distribution that lets MCP-compatible AI clients call governed NeqSim calculation tools.

What is included in this release

Distribution	Asset	Runtime	Use this when
NeqSim core library	`neqsim-3.10.0.jar`	Java 11+	You want the default standalone Java library.
NeqSim core library	`neqsim-3.10.0-Java8.jar`	Java 8+	You need Java 8 or Python `neqsim-python` compatibility.
NeqSim core library	`neqsim-3.10.0-Java21.jar`	Java 21+	You run on the latest LTS JDK.
NeqSim MCP server	`neqsim-mcp-server-3.10.0-runner.jar`	Java 17+	You want VS Code Copilot, Claude Desktop, Cursor, or another MCP client to use NeqSim tools.
NeqSim MCP server checksum	`neqsim-mcp-server-3.10.0-runner.jar.sha256`	-	You want to verify the downloaded MCP runner jar.
NeqSim MCP server container	`ghcr.io/equinor/neqsim-mcp-server:3.10.0`	Docker	You want to run the MCP server without installing Java locally.

Install the MCP server

The MCP server gives MCP-compatible LLM clients access to validated thermodynamic and process simulation tools through a governed tool interface.

Jar install (requires Java 17+)

VERSION=3.10.0
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Docker install

docker pull ghcr.io/equinor/neqsim-mcp-server:3.10.0

Claude Desktop example

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.10.0-runner.jar"]
    }
  }
}

See the MCP Server README for VS Code Copilot, Cursor, Docker, Streamable HTTP, and deployment-profile configuration.

Use the core Java library

Use the release assets above when you need standalone jars. For Maven projects, use the published package dependency:

<dependency>
  <groupId>com.equinor.neqsim</groupId>
  <artifactId>neqsim</artifactId>
  <version>3.10.0</version>
</dependency>

Release notes

GitHub-generated release notes are included with this release and list the commits and pull requests since the previous version.

What's Changed

Paramfitting by @EvenSol in #2140
Rate based modelling by @EvenSol in #2141
Book updates by @EvenSol in #2142
JSON improvements by @EvenSol in #2143
Docs update by @EvenSol in #2144
Bump actions/checkout from 4 to 6 by @dependabot[bot] in #2152
Bump actions/cache from 4 to 5 by @dependabot[bot] in #2149
Bump actions/setup-java from 4 to 5 by @dependabot[bot] in #2150
compressor update by @EvenSol in #2153
Bump actions/setup-python from 5 to 6 by @dependabot[bot] in #2151
Bump com.fasterxml.jackson.core:jackson-databind from 2.21.2 to 2.21.3 by @dependabot[bot] in #2147
Bump com.fasterxml.jackson.dataformat:jackson-dataformat-yaml from 2.21.2 to 2.21.3 by @dependabot[bot] in #2145
UPDATE CPA BOOK by @EvenSol in #2154
Bump actions/upload-artifact from 4 to 7 by @dependabot[bot] in #2148
book skills by @EvenSol in #2155
Bump org.owasp:dependency-check-maven from 12.2.1 to 12.2.2 by @dependabot[bot] in #2146
process updates by @EvenSol in #2159
mcp update by @EvenSol in #2160
Materials evaluations by @EvenSol in #2161
chemicals compablity by @EvenSol in #2162
fix json by @EvenSol in #2163
dispersion functionality by @EvenSol in #2165
Update skills by @EvenSol in #2164

Full Changelog: v3.9.1...v3.10.0

Contributors

dependabot and EvenSol

Assets 11

30 Apr 18:37

github-actions

v3.9.1

37fe7a4

NeqSim 3.9.1

What is NeqSim?

This release ships both the core NeqSim simulation engine and the MCP server distribution that lets MCP-compatible AI clients call governed NeqSim calculation tools.

What is included in this release

Distribution	Asset	Runtime	Use this when
NeqSim core library	`neqsim-3.9.1.jar`	Java 11+	You want the default standalone Java library.
NeqSim core library	`neqsim-3.9.1-Java8.jar`	Java 8+	You need Java 8 or Python `neqsim-python` compatibility.
NeqSim core library	`neqsim-3.9.1-Java21.jar`	Java 21+	You run on the latest LTS JDK.
NeqSim MCP server	`neqsim-mcp-server-3.9.1-runner.jar`	Java 17+	You want VS Code Copilot, Claude Desktop, Cursor, or another MCP client to use NeqSim tools.
NeqSim MCP server checksum	`neqsim-mcp-server-3.9.1-runner.jar.sha256`	-	You want to verify the downloaded MCP runner jar.
NeqSim MCP server container	`ghcr.io/equinor/neqsim-mcp-server:3.9.1`	Docker	You want to run the MCP server without installing Java locally.

Install the MCP server

The MCP server gives MCP-compatible LLM clients access to validated thermodynamic and process simulation tools through a governed tool interface.

Jar install (requires Java 17+)

VERSION=3.9.1
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Docker install

docker pull ghcr.io/equinor/neqsim-mcp-server:3.9.1

Claude Desktop example

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.9.1-runner.jar"]
    }
  }
}

See the MCP Server README for VS Code Copilot, Cursor, Docker, HTTP/SSE, and deployment-profile configuration.

Use the core Java library

Use the release assets above when you need standalone jars. For Maven projects, use the published package dependency:

<dependency>
  <groupId>com.equinor.neqsim</groupId>
  <artifactId>neqsim</artifactId>
  <version>3.9.1</version>
</dependency>

Release notes

GitHub-generated release notes are included with this release and list the commits and pull requests since the previous version.

What's Changed

Paperupdate2 by @EvenSol in #2128
fix WI by @EvenSol in #2129
Fix Compressor detailed polytropic profile losing steps on PSflash di… by @EvenSol in #2130
Improve task solver by @EvenSol in #2131
flash update by @EvenSol in #2133
Update flash docs by @EvenSol in #2134
unisim reader by @EvenSol in #2136
Viscosity fit model by @EvenSol in #2139

Full Changelog: v3.9.0...v3.9.1

Contributors

EvenSol

Assets 11

28 Apr 05:22

github-actions

v3.9.0

99fc982

NeqSim 3.9.0

MCP Server for LLMs

Give any MCP-compatible LLM (VS Code Copilot, Claude Desktop, Cursor) rigorous thermodynamic and process simulation capabilities.

Quick install (jar — requires Java 17+)

VERSION=3.9.0
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Quick install (Docker — no Java needed)

docker pull ghcr.io/equinor/neqsim-mcp-server:3.9.0

Connect to Claude Desktop

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.9.0-runner.jar"]
    }
  }
}

See MCP Server README for VS Code Copilot, Cursor, and Docker configs.

NeqSim Core Library

Asset	Java	Description
`neqsim-3.9.0-Java8.jar`	8	Core library (Python neqsim-python compatibility)
`neqsim-3.9.0.jar`	11	Core library (default)
`neqsim-3.9.0-Java21.jar`	21	Core library (latest JDK)
`neqsim-mcp-server-3.9.0-runner.jar`	17+	MCP Server — connect LLMs to NeqSim
`neqsim-mcp-server-3.9.0-runner.jar.sha256`	—	SHA-256 checksum for MCP server

What's Changed

add ocr pdf skill by @EvenSol in #2119
Bump com.google.code.gson:gson from 2.13.2 to 2.14.0 by @dependabot[bot] in #2121
Bump actions/github-script from 8 to 9 by @dependabot[bot] in #2123
Bump actions/setup-python from 5 to 6 by @dependabot[bot] in #2122
speed cpa by @EvenSol in #2118
warm start by @EvenSol in #2124
warm start by @EvenSol in #2125
improve cpa speed by @EvenSol in #2126
Booksupdate by @EvenSol in #2120
Paplabupd by @EvenSol in #2127

Full Changelog: v3.8.2...v3.9.0

Contributors

dependabot and EvenSol

Assets 11

24 Apr 19:56

github-actions

v3.8.2

48ab417

NeqSim 3.8.2

MCP Server for LLMs

Give any MCP-compatible LLM (VS Code Copilot, Claude Desktop, Cursor) rigorous thermodynamic and process simulation capabilities.

Quick install (jar — requires Java 17+)

VERSION=3.8.2
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Quick install (Docker — no Java needed)

docker pull ghcr.io/equinor/neqsim-mcp-server:3.8.2

Connect to Claude Desktop

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.8.2-runner.jar"]
    }
  }
}

See MCP Server README for VS Code Copilot, Cursor, and Docker configs.

NeqSim Core Library

Asset	Java	Description
`neqsim-3.8.2-Java8.jar`	8	Core library (Python neqsim-python compatibility)
`neqsim-3.8.2.jar`	11	Core library (default)
`neqsim-3.8.2-Java21.jar`	21	Core library (latest JDK)
`neqsim-mcp-server-3.8.2-runner.jar`	17+	MCP Server — connect LLMs to NeqSim
`neqsim-mcp-server-3.8.2-runner.jar.sha256`	—	SHA-256 checksum for MCP server

What's Changed

speed up changes by @EvenSol in #2104
exergy analysis by @EvenSol in #2107
Phase envelope: NaN branch-break sentinels + structured EnvelopeSegme… by @EvenSol in #2105
docs(scrubber): document GasScrubberMechanicalDesign + TR3500 conformity API by @dupuypablo in #2102
Mixerfix by @EvenSol in #2109
cpa speedup by @EvenSol in #2111
Fix/stale sqrt at cache by @EvenSol in #2112
test(tpflash): low-T methane/nC7 grid regression guard by @EvenSol in #2113
Further speed improvements by @EvenSol in #2115
error fix by @EvenSol in #2114
update by @EvenSol in #2116

New Contributors

@dupuypablo made their first contribution in #2102

Full Changelog: v3.8.0...v3.8.2

Contributors

dupuypablo and EvenSol

Assets 11

22 Apr 09:04

github-actions

v3.8.0

6c8ed52

NeqSim 3.8.0

MCP Server for LLMs

Give any MCP-compatible LLM (VS Code Copilot, Claude Desktop, Cursor) rigorous thermodynamic and process simulation capabilities.

Quick install (jar — requires Java 17+)

VERSION=3.8.0
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar"
curl -fLO "https://github.com/equinor/neqsim/releases/download/v${VERSION}/neqsim-mcp-server-${VERSION}-runner.jar.sha256"
sha256sum -c neqsim-mcp-server-${VERSION}-runner.jar.sha256

Quick install (Docker — no Java needed)

docker pull ghcr.io/equinor/neqsim-mcp-server:3.8.0

Connect to Claude Desktop

{
  "mcpServers": {
    "neqsim": {
      "command": "java",
      "args": ["-jar", "/path/to/neqsim-mcp-server-3.8.0-runner.jar"]
    }
  }
}

See MCP Server README for VS Code Copilot, Cursor, and Docker configs.

NeqSim Core Library

Asset	Java	Description
`neqsim-3.8.0-Java8.jar`	8	Core library (Python neqsim-python compatibility)
`neqsim-3.8.0.jar`	11	Core library (default)
`neqsim-3.8.0-Java21.jar`	21	Core library (latest JDK)
`neqsim-mcp-server-3.8.0-runner.jar`	17+	MCP Server — connect LLMs to NeqSim
`neqsim-mcp-server-3.8.0-runner.jar.sha256`	—	SHA-256 checksum for MCP server

What's Changed

fix molar mass by @EvenSol in #1984
update costald by @EvenSol in #1985
feat: flash algorithm improvements (TPflash, Flash, TPmultiflash) by @EvenSol in #1987
docs: add VLE/LLE/VLLE phase equilibrium modes guide to flash calcula… by @EvenSol in #1989
implement implicit CPA method by @EvenSol in #1986
update paperlab by @EvenSol in #1991
update paper agents by @EvenSol in #1992
agents update by @EvenSol in #1994
automation by @EvenSol in #2001
asphaltene updates by @EvenSol in #2000
wax model updates by @EvenSol in #1999
Bump actions/cache from 4 to 5 by @dependabot[bot] in #2004
Bump actions/setup-python from 5 to 6 by @dependabot[bot] in #2003
Bump actions/github-script from 7 to 8 by @dependabot[bot] in #2002
two phase flow by @EvenSol in #1996
scale updates by @EvenSol in #1997
Digitwin paper by @EvenSol in #2005
update agents by @EvenSol in #2008
Inside out distillation column algorithm by @EvenSol in #2006
improve mcp by @EvenSol in #2009
electrolyte update by @EvenSol in #2007
ejector update by @EvenSol in #2012
add agents by @EvenSol in #2011
dry seals by @EvenSol in #2013
fix(ChungViscosityMethod): remove duplicate getPhase() call in viscosity denominator by @tejasae-afk in #2014
Kernel restart problem by @EvenSol in #2017
IEC81346 by @EvenSol in #2018
update agents by @EvenSol in #2015
improvements by @EvenSol in #2019
Friction theory by @EvenSol in #1995
import by @EvenSol in #2020
fix: gas scrubber by @GiuFed in #2027
Wellmaths by @EvenSol in #2026
saft updates by @EvenSol in #2025
weee by @EvenSol in #2024
add modules for HX by @EvenSol in #2023
Pcsaft2 by @EvenSol in #2030
Pcsaft3 by @EvenSol in #2031
pipe network by @EvenSol in #2028
update gas network by @EvenSol in #2034
add chemical reaction flash by @EvenSol in #2032
biogas updates by @EvenSol in #2036
add saft-vr-mie by @EvenSol in #2033
mcp improvements by @EvenSol in #2037
update mcp by @EvenSol in #2039
Bump docker/build-push-action from 6 to 7 by @dependabot[bot] in #2043
Bump docker/login-action from 3 to 4 by @dependabot[bot] in #2041
Bump actions/github-script from 8 to 9 by @dependabot[bot] in #2042
Bump org.owasp:dependency-check-maven from 12.2.0 to 12.2.1 by @dependabot[bot] in #2040
CPA improvements by @EvenSol in #2038
add nh3 gerg by @EvenSol in #2045
update sep by @EvenSol in #2046
add functionality by @EvenSol in #2047
updated mcp by @EvenSol in #2048
update separator functionality by @EvenSol in #2050
Sepfix2 by @EvenSol in #2052
lng ageing by @EvenSol in #2051
seppapaer by @EvenSol in #2053
feat: Characterization, do not warn if model name is empty by @asmfstatoil in #2055
Style: remove unused imports by @asmfstatoil in #2058
updated solvers by @EvenSol in #2059
Docretr by @EvenSol in #2061
speed improvement by @EvenSol in #2062
hydrocyclone by @EvenSol in #2063
fixfails by @EvenSol in #2067
surftension by @EvenSol in #2066
capillary flash by @EvenSol in #2065
style: clean by eclipse by @asmfstatoil in #2069
dyn process by @EvenSol in #2064
Grad2 by @EvenSol in #2070
new conditivity methods by @EvenSol in #2073
Nonequilibrium by @EvenSol in #2072
update optimizer by @EvenSol in #2075
diffusion update by @EvenSol in #2074
separator performance update by @EvenSol in #2071
Paper improvements by @EvenSol in #2077
add book agents by @EvenSol in #2078
update power gen util by @EvenSol in #2079
Learnfromclaw by @EvenSol in #2081
updated skills handling by @EvenSol in #2083
add plant tuning skill by @EvenSol in #2084
Revert "Add Engineering Decision Support Framework for Control Room O… by @EvenSol in #2087
improve TVflash by @EvenSol in #2091
skill check by @EvenSol in #2095
Graph based optim by @EvenSol in #2100
Tpflash speedup by @EvenSol in #2099
Further speed up by @EvenSol in #2101
Further speedup by @EvenSol in #2103

New Contributors

@tejasae-afk made their first contribution in #2014
@GiuFed made their first contribution in #2027

Full Changelog: v3.7.0...v3.8.0

Contributors

dependabot, asmfstatoil, and 3 other contributors

Assets 11

31 Mar 18:05

github-actions

v3.7.0

ce691ba

NeqSim 3.7.0

What's Changed

add subsea equipment by @EvenSol in #1941
refactor: normalize on getLnGamma (and drop duplicates) by @asmfstatoil in #1902
docs by @EvenSol in #1942
div by @asmfstatoil in #1943
update agents and docs by @EvenSol in #1944
Task2 by @EvenSol in #1945
update by @EvenSol in #1946
Compressor updates by @EvenSol in #1948
Comp updates by @EvenSol in #1947
mechanical design updates by @EvenSol in #1949
Bump com.fasterxml.jackson.core:jackson-databind from 2.21.1 to 2.21.2 by @dependabot[bot] in #1951
Bump com.fasterxml.jackson.dataformat:jackson-dataformat-yaml from 2.21.1 to 2.21.2 by @dependabot[bot] in #1950
Co2injection classes by @EvenSol in #1952
Lng process equipment by @EvenSol in #1953
pump temperature etc by @EvenSol in #1955
update agents by @EvenSol in #1956
two fluid model update and tests by @EvenSol in #1957
add HX functionality by @EvenSol in #1959
update field development by @EvenSol in #1960
various updates by @EvenSol in #1961
Neqsim process models from unstructured data and import from commercial simulators by @EvenSol in #1965
plug flow reactor by @EvenSol in #1966
Import and generate python by @EvenSol in #1967
Bump com.github.spotbugs:spotbugs-maven-plugin from 4.9.8.2 to 4.9.8.3 by @dependabot[bot] in #1968
Bump org.apache.logging.log4j:log4j-api from 2.25.3 to 2.25.4 by @dependabot[bot] in #1969
Bump org.apache.logging.log4j:log4j-core from 2.25.3 to 2.25.4 by @dependabot[bot] in #1970
Bump codecov/codecov-action from 5 to 6 by @dependabot[bot] in #1971
add mcp runner classes by @EvenSol in #1972
add process event listener by @EvenSol in #1973
flash fix by @EvenSol in #1974
Neqsimimprovements by @EvenSol in #1975
v3.7.0 by @EvenSol in #1976
Scientific paper by @EvenSol in #1978
Gibbs reactor updates by @EvenSol in #1977

Full Changelog: v3.6.1...v3.7.0

Contributors

dependabot, asmfstatoil, and EvenSol

Assets 9

Releases: equinor/neqsim

NeqSim 3.13.0

What is NeqSim?

What is included in this release

Install the MCP server

Jar install (requires Java 21+)

Docker install

Claude Desktop example

Use the core Java library

Release notes

What's Changed

Contributors

Uh oh!

NeqSim 3.12.1

What is NeqSim?

What is included in this release

Install the MCP server

Jar install (requires Java 21+)

Docker install

Claude Desktop example

Use the core Java library

Release notes

What's Changed

Contributors

Uh oh!

NeqSim 3.12.0

What is NeqSim?

What is included in this release

Install the MCP server

Jar install (requires Java 17+)

Docker install

Claude Desktop example

Use the core Java library

Release notes

What's Changed

Contributors

Uh oh!

NeqSim 3.11.0

What is NeqSim?

What is included in this release

Install the MCP server

Jar install (requires Java 17+)

Docker install

Claude Desktop example

Use the core Java library

Release notes

What's Changed

Contributors

Uh oh!

NeqSim 3.10.0

What is NeqSim?

What is included in this release

Install the MCP server

Jar install (requires Java 17+)

Docker install

Claude Desktop example

Use the core Java library

Release notes

What's Changed

Contributors

Uh oh!

NeqSim 3.9.1

What is NeqSim?

What is included in this release

Install the MCP server

Jar install (requires Java 17+)

Docker install

Claude Desktop example

Use the core Java library

Release notes

What's Changed

Contributors

Uh oh!

NeqSim 3.9.0

MCP Server for LLMs

Quick install (jar — requires Java 17+)

Quick install (Docker — no Java needed)

Connect to Claude Desktop

NeqSim Core Library

What's Changed