Agent skill

Neqsim Setup

by equinor in equinor/neqsim

Configure and verify the NeqSim task environment: task root, document root, Word report template, and health of Java, the NeqSim JAR, the MCP server and the neqsim CLI.

Apache-2.0Auto-check passedAgent Workflows

Install Neqsim Setup

skills CLI
$ npx skills add equinor/neqsim --skill neqsim-setup -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install equinor/neqsim neqsim-setup --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/equinor/neqsim.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/neqsim-setup .claude/skills/neqsim-setup && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
neqsim-setup
GitHub stars
156
Token cost
~2.2k tokens
SKILL.md length
1,107 words
Files
1
Skills in repo
66
Repo updated
First seen
Licence
Apache-2.0

At a glance

Configure and verify the NeqSim task environment: task root, document root, Word report template, and health of Java, the NeqSim JAR, the MCP server and the neqsim CLI.

  • Works in 4 steps: Find the CLI → Ask for the three paths (skip any the… → Verify → …
  • : a user runs /neqsim-setup
  • SKILL.md covers 0. Find the CLI, 1. Ask for the three paths…, 2. Verify and 3. Confirm
  • Calls winget

What it does

Neqsim Setup is an agent skill from equinor/neqsim. Configure and verify the NeqSim task environment: task root, document root, Word report template, and health of Java, the NeqSim JAR, the MCP server and the neqsim CLI. USE WHEN: a user runs /neqsim-setup, asks to set or show the task/document folder, work path or report template, asks 'is my NeqSim setup working', does first-time setup after installing the plugin, or @solve-task cannot resolve a task root. Settings live in ~/.neqsim/taskdefaults.json.

Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows. It works with Model Context Protocol, Java, Python and Visual Studio Code. The repository describes itself as: NeqSim is a library for calculation of fluid behavior, phase equilibrium and process simulation. The licence is Apache-2.0.

When your agent uses it

  • : a user runs /neqsim-setup
  • Show the task/document folder
  • Report template
  • Asks is my NeqSim setup working

Example prompts

  • “is my NeqSim setup working”
  • “/neqsim-setup”

Requirements

  • Python 3

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Find the CLI
  2. Ask for the three paths (skip any the user already has)
  3. Verify
  4. Confirm

What it can do on your machine

Read from SKILL.md and the folder at commit 92261e0. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • winget

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Neqsim Setup loads about 2.2k tokens when it runs. Until then it costs about 118 tokens; SKILL.md has 1,107 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~118
When it runs · the whole SKILL.md, loaded when a task matches
~2.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from equinor/neqsim at commit 92261e0, republished under its Apache-2.0 licence (© equinor). 1,107 words, ~2,234 tokens.

Download SKILL.mdSave it as .claude/skills/neqsim-setup/SKILL.md (or your agent's skills folder).
name
neqsim-setup
description
Configure and verify the NeqSim task environment: task root, document root, Word report template, and health of Java, the NeqSim JAR, the MCP server and the neqsim CLI. USE WHEN: a user runs /neqsim-setup, asks to set or show the task/document folder, work path or report template, asks 'is my NeqSim setup working', does first-time setup after installing the plugin, or @solve-task cannot resolve a task root. Settings live in ~/.neqsim/task_defaults.json.
last_verified
2026-09-20

NeqSim setup (/neqsim-setup)

Walk the user through the three user-level settings the task workflow depends on, then run neqsim doctor. Everything here is stored in ~/.neqsim/task_defaults.json, so it is shared by the workspace checkout, the pip-installed toolkit and the agent plugin.

0. Find the CLI

Run neqsim --show-task-root. If the shell says neqsim is not recognized, use <python-executable> -m neqsim_cli --show-task-root where <python-executable> is NEQSIM_PYTHON if set, else the first python3 / py -3 / python on PATH. Use that same form for every command below. If neither works the toolkit is not installed yet. In a plugin install the SessionStart hook installs it in the background on the first prompt of a session; check ~/.neqsim/plugin-install/neqsim/install.log (last line == ... OK or == ... FAILED with the pip error above it). If the log is missing or failed, install by hand from the plugin's vendored copy: <python-executable> -m pip install "<plugin folder>/toolkit" where the plugin folder is %USERPROFILE%\.vscode\agent-plugins\github.com\equinor\neqsim-copilot-plugin\neqsim on Windows (~/.vscode/agent-plugins/... on Linux and macOS). A marketplace install lands there, not under agentPlugins in the VS Code user-data folder — that one only holds synced customization plugins, so do not conclude from its absence that the plugin is not installed. A Copilot CLI install lands in ~/.copilot/installed-plugins/neqsim-copilot-plugin/<plugin>. Without a plugin: <python-executable> -m pip install "neqsim-dev-setup @ git+https://github.com/equinor/neqsim.git#subdirectory=devtools". Installing the toolkit also pip-installs the neqsim PyPI package (the packaged JAR + jpype bridge), and the hook's own install.log runs IMPORT_OK=1 IMPORT_FAILED=0 against it afterwards, so a plugin-only install always ends up with the full NeqSim Python API importable — not just the CLI.

The neqsim-community and neqsim-enterprise plugins install their skill packages through the same hook, into the same interpreter: ~/.neqsim/plugin-install/<plugin>/install.log. A healthy log ends with live dependencies: all N installed, IMPORT_OK=<n> IMPORT_FAILED=0 and == ... OK. Each FAILED <package> (<error>) line names a skill package that does not import and why — most often a missing live dependency (ModuleNotFoundError: stidapi, eq_api_connector, msal_bearer, pepr_client, tagreader), which means the STID / SAP-Maintenance / PDM / PEPR / historian agents cannot reach their systems. Fix by hand with <python-executable> -m pip install -e "<plugin folder>/neqsim-enterprise" --no-deps followed by <python-executable> -m pip install -r "<plugin folder>/neqsim-enterprise/requirements-live.txt" (add --no-index --find-links "<plugin folder>/neqsim-enterprise/wheels" for an offline bundle). A missing log means the hook never ran for that plugin: start a new chat, then check the plugin version against these known hook failures — all fixed by updating the plugin:

Hook error in chatCauseFixed in
The argument '/scripts/install_skill_packages.ps1' ... does not existVS Code does not expand ${PLUGIN_ROOT}1.1.1 / 1.0.1
PowerShell parse errors with variables replaced by nothing (+ = ''; if (-not ...)the hook's windows string had its $ tokens strippeda later 1.1.x / 1.0.x
install_skill_packages.ps1 ... is not digitally signed. You cannot run this script on the current system (often arriving as a #< CLIXML blob), once per installed plugina Group Policy execution policy on a managed PC overrides -ExecutionPolicy Bypass, so the hook's unsigned .ps1 cannot run; nothing is pip-installed and the MCP entry is never repairedneqsim 1.1.7 / community 1.0.5 / enterprise 1.0.8

On an older plugin, do the hook's work by hand (pip and a .py are not covered by the execution policy): <python-executable> "<plugin folder>\scripts\install_skill_packages.py" with PLUGIN_ROOT set to that folder, for each installed plugin.

1. Ask for the three paths (skip any the user already has)

Show the current values first:

neqsim --show-task-root
neqsim --show-document-root
neqsim --show-report-template

Then ask, one question each, with the current value as the default:

SettingQuestionCommand
Task root"Where should new task folders be created? (a OneDrive/shared folder is common; cwd means the terminal's folder)"neqsim --set-task-root "PATH"
Document root"Which folder holds your standards, TRs, datasheets and drawings? Agents search it and all subfolders before declaring a document unavailable. Leave empty to skip."neqsim --set-document-root "PATH"
Report template"Which .docx/.dotx template should Word reports use? Leave empty for built-in styling."neqsim --set-report-template "PATH"

After setting the task root or the document root (skip for cwd, which has no single folder to reveal), ask: "Open this folder in File Explorer now?" and, if yes, re-run the same --set-task-root / --set-document-root command with --explorer appended (add --vscode too if the user also wants it added to the VS Code workspace — both flags combine freely, e.g. neqsim --set-document-root "PATH" --vscode --explorer). Without --explorer the command still prints how to open the folder by hand.

Quote paths with spaces. Do not guess or persist a path the user did not give; --reset-task-root / --reset-document-root / --reset-report-template remove a saved value. Per-session overrides are the environment variables NEQSIM_TASK_ROOT, NEQSIM_DOCUMENT_ROOT, NEQSIM_REPORT_TEMPLATE.

Show full SKILL.md (377 more words)Show less

2. Verify

Run neqsim doctor and relay the result. It detects its own mode:

  • workspace (source checkout): Java, Maven, built JAR, Python neqsim, agents/skills files, task root, template, document root, git.
  • toolkit (pip / plugin, no checkout): Java (>= 8 for NeqSim, >= 21 for the MCP server), the packaged NeqSim JAR starts and flashes, MCP server jar cache, neqsim CLI, task root, template, document root.

Report only the [!!] and [??] lines with their fix hints. Typical fixes:

SymptomFix
Java < 21install a JDK 21+ first on PATH (winget install EclipseAdoptium.Temurin.21.JDK); NeqSim itself runs on 8+ but the MCP server needs 21
MCP output shows Could not find or load main class ${PLUGIN_ROOT}.servers.NeqsimMcpLauncher.java, exit code 1expected: VS Code does not expand ${PLUGIN_ROOT} in an Agent Plugins mcp.json (microsoft/vscode#336882), so the plugin's own neqsim server entry always errors. Do not blame Java and do not edit the plugin's mcp.json. The working entry is an absolute one in the VS Code user mcp.json (%APPDATA%\Code\User\mcp.json), which the SessionStart hook writes; if it is missing the hook never ran — see §0. Manual equivalent: "servers": { "neqsim": { "type": "stdio", "command": "java", "args": ["<plugin folder>/servers/NeqsimMcpLauncher.java"] } }, then open a new chat
Registered server java FAIL, or no neqsim_* tools and ~/.neqsim/mcp-server/ missingthe neqsim entry in the VS Code user mcp.json runs a Java below 21 (typically Java 8 first on PATH shadowing a newer JDK): the launcher is source-launched and dies with Could not find or load main class before it can complain. Re-run the plugin install script (it pins the newest JDK 21+ into the entry) or set NEQSIM_MCP_JAVA and start a new chat (the session hook re-pins). Prove the fix without VS Code: "<jdk21+>/bin/java" "<plugin>/servers/NeqsimMcpLauncher.java" --prefetch (exit 0 = OK). MCP tools bind at chat-session start: after any fix open a new chat or Reload Window
no packaged JAR<python-executable> -m pip install neqsim or set NEQSIM_JAR
neqsim on PATH comes from another interpreteruse <python-executable> -m neqsim_cli explicitly
task root not writablechoose another folder with --set-task-root

3. Confirm

Finish with a three-line summary: task root, document root (or "not set - work from user-supplied documents"), report template (or "built-in"), and the doctor pass count. Optionally list the document root's contents with neqsim documents so the user sees what agents will be able to find.

© equinor, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .github/skills/neqsim-setup of equinor/neqsim.

Open the folder on GitHubat commit 92261e0

Compare with similar skills

Neqsim Setup next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Neqsim Setup compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Neqsim Setup this skillequinor/neqsim156—~2.2kAutomated safety check: PassApache-2.0
Copilot SDKintellectronica/agent-skills295—~3.2kAutomated safety check: PassCC0-1.0
MCP Debuggerdebugmcp/mcp-debugger171—~3.8kAutomated safety check: PassMIT
Gemini API DevAyuilos/Miffan1821 repos~1.4kAutomated safety check: PassAGPL-3.0
Agent Framework Azure AI Pymicrosoft/skills3.1k1 repos~3.1kAutomated safety check: PassMIT
Gemini API Devaiskillstore/marketplace4303 repos~1.6kAutomated safety check: PassApache-2.0

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Categories

Questions about Neqsim Setup

What does Neqsim Setup do?

Configure and verify the NeqSim task environment: task root, document root, Word report template, and health of Java, the NeqSim JAR, the MCP server and the neqsim CLI. Neqsim Setup is an agent skill from equinor/neqsim. Configure and verify the NeqSim task environment: task root, document root, Word report template, and health of Java, the NeqSim JAR, the MCP server and the neqsim CLI.

When should I use Neqsim Setup?

Neqsim Setup fits situations like: : a user runs /neqsim-setup; show the task/document folder; report template; asks is my NeqSim setup working.

How do I install Neqsim Setup in Claude Code?

Run `npx skills add equinor/neqsim --skill neqsim-setup -a claude-code`. Or copy the skill folder (.github/skills/neqsim-setup in equinor/neqsim) into .claude/skills/neqsim-setup in your project. Claude Code loads it when a task matches its description.

How do I install Neqsim Setup in Codex?

Run `npx skills add equinor/neqsim --skill neqsim-setup -a codex`. Or copy the skill folder (.github/skills/neqsim-setup in equinor/neqsim) into .agents/skills/neqsim-setup in your project. Codex loads it when a task matches its description.

Can I use Neqsim Setup in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add equinor/neqsim --skill neqsim-setup -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/neqsim-setup, .gemini/skills/neqsim-setup, .github/skills/neqsim-setup and .opencode/skills/neqsim-setup in your project.

What does Neqsim Setup need to run?

Going by SKILL.md and its folder, Neqsim Setup needs the command-line tools its instructions call (winget). Our summary lists: Python 3.

Does Neqsim Setup access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Neqsim Setup safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Neqsim Setup use?

Neqsim Setup is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Neqsim Setup use?

About 2.2k tokens (SKILL.md is roughly 8.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Neqsim Setup?

Skills that share tags, products or a category with Neqsim Setup: Copilot SDK (intellectronica/agent-skills, 295 stars), MCP Debugger (debugmcp/mcp-debugger, 171 stars), Gemini API Dev (Ayuilos/Miffan, 182 stars) and Agent Framework Azure AI Py (microsoft/skills, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Neqsim Setup?

equinor (a GitHub organization) maintains it in equinor/neqsim, which has 156 GitHub stars. The repository holds 66 skills in this directory. The repository was last updated on October 7, 2026.

Source: equinor/neqsim on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.