matlab-upgrade-mex-ic

matlab-upgrade-mex-ic is a skill for Claude Code from matlab/matlab-agentic-toolkit. It costs 222 tokens per session (5,279 once invoked), scanned A, original, no licence file.

A migration guide for updating C, C++, and Fortran MEX source code from MATLAB's older Separate Complex API to its Interleaved Complex API. It covers changes needed for the -R2018a interface and builds that support both APIs.

In plain words
What is it for?
Use it when upgrading legacy MEX files, replacing functions such as mxGetPr and mxGetPi, or adding checks for separate and interleaved complex data.
Why use it?
It helps avoid compatibility problems when older MEX code uses functions that no longer match the newer complex-number interface. It also explains how to keep code working across supported API modes.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the matlab-external-language-interfaces plugin — 2 skills shipped together

Good fit Use it when upgrading legacy MEX files, replacing functions such as mxGetPr and mxGetPi, or adding checks for separate and interleaved complex data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/matlab/matlab-agentic-toolkit/matlab-upgrade-mex-ic
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add matlab/matlab-agentic-toolkit --skill matlab-upgrade-mex-ic
Clone the repo
git clone --depth 1 https://github.com/matlab/matlab-agentic-toolkit

Made for: Claude Code.

Or install matlab-external-language-interfaces, the plugin that ships this one along with the rest of its 2 skills.

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 matlab-upgrade-mex-ic

README.md
[![agentmods](https://agentmods.dev/badge/skills/matlab/matlab-agentic-toolkit/matlab-upgrade-mex-ic/github.svg)](https://agentmods.dev/skills/matlab/matlab-agentic-toolkit/matlab-upgrade-mex-ic)
Your own site
<a href="https://agentmods.dev/skills/matlab/matlab-agentic-toolkit/matlab-upgrade-mex-ic"><img src="https://agentmods.dev/badge/skills/matlab/matlab-agentic-toolkit/matlab-upgrade-mex-ic/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for matlab-upgrade-mex-ic

Your own site · 80×15
<a href="https://agentmods.dev/skills/matlab/matlab-agentic-toolkit/matlab-upgrade-mex-ic"><img src="https://agentmods.dev/badge/skills/matlab/matlab-agentic-toolkit/matlab-upgrade-mex-ic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 222 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,279 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00222 $0.05279
Opus 5 $0.00111 $0.02639
Sonnet 5 $0.00044 $0.01056
Haiku 4.5 $0.00022 $0.00528

Measured 5d ago against content hash f5937d743124, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

matlab-upgrade-mex-ic scanned grade A with 0 findings 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 5d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills-catalog/matlab-external-language-interfaces/matlab-upgrade-mex-ic/SKILL.md · 402 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 5d ago First seen · 402 lines · 222 tokens per session scan A f5937d743124

Subscribe to this mod's changes

matlab-upgrade-mex-ic is a skill published in the GitHub repository matlab/matlab-agentic-toolkit (1,021 stars, last pushed 12d ago), with no licence file. It adds 222 tokens to every session and 5,279 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

Other skills, from other repositories

simulink-generate-embedded-code

Configure Simulink models for Embedded Coder (ERT) or AUTOSAR code generation. Use when the user asks to configure a model for production/ECU deployment, generate embedded C or C++ code, target ARM or x86 hardware, optimize code generation for speed or RAM, apply MISRA C/C++ compliance, or set up ERT, AUTOSAR, or…

matlab/simulink-agentic-toolkit · 170 tokens

simulink-use-c-function-block

Use when integrating legacy code, custom code, or C/C++ code into Simulink via C Function blocks. Configure Simulink C Function blocks programmatically using the SymbolSpec API. TRIGGER when the user: Asks about calling or wrapping C/C++ code or libraries in Simulink Wants to create, configure, or use a C Function…

matlab/simulink-agentic-toolkit · 137 tokens

simulink-streaming-dsp

Building or editing Simulink (.slx) models that stream signals in frames using DSP System Toolbox — audio, vibration, radar, comms. Use when the prompt names a Simulink block (Discrete FIR Filter, Buffer, Unbuffer, Rate Transition, Downsample, Upsample, Sample-Rate Converter, FIR Decimation, Time Scope, Spectrum…

matlab/simulink-agentic-toolkit · 159 tokens

create-sdi-run

Import data into the Simulation Data Inspector (SDI) from MAT, CSV, or Excel files, from workspace variables, or from a Simulink simulation. Use when the user wants to view a logged file in SDI, load a bench-test log, or verify what a just-completed Simulink.sdi.createRun or sim(model) produced. Covers the 'file'…

matlab/simulink-agentic-toolkit · 221 tokens

author-modeladvisor-checks

Author or upgrade Model Advisor checks for Simulink and System Composer models. Covers the full lifecycle: guideline authoring, check specification, Model Advisor check implementation, and qualification testing. Use when creating new checks (edit-time, standard batch, config-parameter, auto-fix), converting legacy…

matlab/simulink-agentic-toolkit · 124 tokens

simulink-explain-missing-coverage

Use this skill when the user asks to summarize, or asks why Simulink Coverage objectives are missing, unsatisfied, or uncovered on a coverage result they already have — why specific decision, condition, MCDC, relational-boundary, or saturation/overflow outcomes weren't exercised, whether uncovered logic is dead code…

matlab/simulink-agentic-toolkit · 125 tokens