validate-modelica

validate-modelica is a skill for Claude Code, Codex from WolframResearch/system-modeler-ai-toolkit. It costs 106 tokens per session (3,392 once invoked), scanned C, original, MIT.

A checker for Modelica model files that uses WSMKernelX to flatten them. Flattening expands the model structure and checks equations, types, and connections for structural errors.

In plain words
What is it for?
Use it to validate a .mo file or multi-file Modelica library and confirm that its model structure is valid.
Why use it?
It finds problems that could prevent a Modelica model from compiling or simulating successfully.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Not installable on its own: it reads a path above its own folder, which only exists inside its repository. The line is [`../scripts/README.md`](../scripts/README.md).*.

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for validate-modelica

README.md
[![agentmods](https://agentmods.dev/badge/skills/wolframresearch/system-modeler-ai-toolkit/validate-modelica.svg)](https://agentmods.dev/skills/wolframresearch/system-modeler-ai-toolkit/validate-modelica)
Your own site
<a href="https://agentmods.dev/skills/wolframresearch/system-modeler-ai-toolkit/validate-modelica"><img src="https://agentmods.dev/badge/skills/wolframresearch/system-modeler-ai-toolkit/validate-modelica.svg" alt="Measured on agentmods" height="20"></a>
Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,392 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00106 $0.03392
Opus 5 $0.00053 $0.01696
Sonnet 5 $0.00021 $0.00678
Haiku 4.5 $0.00011 $0.00339

Measured 6d ago against content hash 2403abc2a8b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade C, and why

validate-modelica scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

shell-agnostic. For cleanup use `Remove-Item -Recurse -Force`, not `rm -rf`.
validate-modelica/SKILL.md · 252 lines

How it starts

The opening of the file, as written. The whole thing — 252 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Validate Modelica Model

This skill validates Modelica models (.mo files) by flattening them with WSMKernelX, which checks for structural errors (equations, types, connections). A successful flatten means the model is structurally valid.

Before you run anything

This skill drives WSMKernelX through the shared launcher ../scripts/wsm_run.py. Read the shared-conventions appendix at the end of this file first — launcher resolution, the Windows-vs-Unix shell/Python rules, the temp-dir and cleanup conventions, the JSON-array output gotcha, and the MSL 4.x dialect notes that every step below assumes.

The launcher writes everything into _wsm_validate_temp/ next to the .mo file and leaves validate.out.json there for you to parse. Tell the user: "Working in temporary directory _wsm_validate_temp/. This will be deleted after validation."

Workflow

1. Identify the model file and name

Identify the .mo file and extract the model name — see Appendix → Picking the model name. For a directory-form (multi-file) library, point --model at the library folder (not one class file) and pass the full dotted --name — see Appendix → Directory-form (multi-file) libraries.

2. Run the launcher

python3 "<scripts-dir>/wsm_run.py" --mode validate \
  --model "<path-to-ModelFile.mo>" --name ModelName --timeout 60

The launcher auto-detects whether the model needs the Modelica Standard Library and loads the right MSL version; force it with --msl yes|no or pin a version with --msl-version 4.1.0. If the model uses an installed non-MSL library (e.g. Hydraulic), add --load-library <Name> — see Appendix → Using non-MSL libraries. Timeout: allow up to 60 seconds — complex models with many components can take a while to flatten.

If the launcher can't find the System Modeler install, see Appendix → When the install or compiler isn't found.

Read the full file on GitHub · 252 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 252 lines · 106 tokens per session scan C 2403abc2a8b1

Subscribe to this mod's changes

validate-modelica is a skill published in the GitHub repository WolframResearch/system-modeler-ai-toolkit (10 stars, last pushed 16d ago), licensed MIT. It adds 106 tokens to every session and 3,392 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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