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matlab skill

by K-Dense-AI·K-Dense-AI/scientific-agent-skills·47k stars·MIT

Build, review, migrate, and safely plan MATLAB or GNU Octave numerical workflows, including arrays, tabular/time data, tests, projects, graphics, MAT files, and explicit Python interoperability.

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Install the matlab skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description.

git clone --depth 1 https://github.com/K-Dense-AI/scientific-agent-skills.git /tmp/scientific-agent-skills
mkdir -p ~/.claude/skills
cp -r /tmp/scientific-agent-skills/skills/matlab ~/.claude/skills/matlab
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

MATLAB and GNU Octave

Use this skill to design or review numerical code, migrate MATLAB releases, prepare reproducible projects, and plan trusted execution. MATLAB and GNU Octave are distinct products: compatibility is partial, not a license or behavior guarantee.

Product and license gate

named toolbox, MATLAB Test, MATLAB Compiler, MATLAB Coder, Parallel Computing Toolbox, or an add-on is installed, licensed, or available to the user.

  • MATLAB R2026a is proprietary. Do not assume MATLAB, MATLAB Online, a

with MATLAB Compiler; it cannot run arbitrary source or host MATLAB Engine for Python. Building artifacts needs the applicable licensed compiler and every product used by the source.

  • MATLAB Runtime is not MATLAB. It runs compatible applications produced

MATLAB toolboxes. Similar names do not imply API, numerical, graphics, or licensing equivalence.

  • GNU Octave 11.3.0 is free software under GPLv3+. Octave packages are not

the user actually has. Treat availability as unknown until confirmed.

  • Ask which runtime, release, platform, installed products, and license context

See Octave compatibility and execution/product boundaries.

Nonnegotiable safety boundary

Never run an untrusted .m, .mlx, MEX binary, MAT file, project startup or shutdown action, package installer, or generated artifact. Static review does not prove safety.

Treat these as execution or code-loading surfaces:

timers, app callbacks, and dynamically modified paths;

  • eval, evalin, assignin, text-derived feval, str2func, callbacks,

pyrun, pyrunfile), MEX, and native libraries;

  • system, unix, dos, shell escape !, Java, .NET, Python (py.*,

generated code;

  • mex, codegen, MATLAB Compiler, build tasks, package/project startup, and

handles, Java/System objects, and class code reachable from MAT files.

  • load, object deserialization (loadobj, custom serialization), function

.mlx is an opaque archive for this toolkit and MEX is native executable code. Do not use Python pickle for exchange. Inspect first, isolate when appropriate, obtain explicit approval, then invoke a user-confirmed executable and license. Bundled scripts are static or dry-run tools: none launches MATLAB, Octave, Python Engine, a compiler, or a subprocess.

Default workflow

base product versus required toolboxes/packages, expected inputs/outputs, numerical tolerances, and whether execution is authorized.

  1. Clarify target. Record MATLAB release or Octave version, OS/architecture,

required products, and MAT headers before any runtime loads them.

  1. Inventory statically. Scan .m files, opaque artifacts, project paths,

automation. Use scripts only for controlled orchestration and live scripts for reviewed interactive narratives.

  1. Choose code form. Prefer functions with an arguments block for

rules, indexing, implicit expansion, RNG algorithm/seed, tolerances, and output formats.

  1. Make semantics explicit. Record shapes, classes, units, missing-value

graphics deterministic, and tests independent of base-workspace residue.

  1. Test without hidden state. Keep fixtures synthetic, paths project-local,

licenses, and launch only after explicit approval outside these helpers.

  1. Plan execution. Generate an argv plan, review startup/path effects and

RNG policy, tolerances, and command plan without dumping the environment.

  1. Capture provenance. Hash named inputs/code and record release, products,

Language and data checklist

Scripts, functions, and live scripts

Functions have local workspaces and explicit inputs/outputs.

  • Scripts share the caller/base workspace and leave variables behind.

review artifacts. Export reviewed code to .m for static inspection.

  • Live scripts (.mlx) mix code and rich output but are not plain-text

variables, and silent name shadowing. Use project roots and fullfile.

  • Avoid clear all, broad addpath(genpath(...)), dependence on pwd, global

type declarations can convert inputs; validators check without converting.

  • Validate sizes, classes, and values in arguments blocks. Remember that

are private to the file; since R2024a they can appear anywhere in a script outside conditional contexts.

  • A main function file should match the main function name. Local functions
function y = scaleSignal(x, options)
arguments
    x (:,1) double {mustBeFinite}
    options.Scale (1,1) double {mustBeFinite, mustBeNonzero} = 1
end
y = x .* options.Scale;
end

Read programming.

Arrays, indexing, and numerics

A{...}, and A.(name) have different semantics.

  • MATLAB uses 1-based, column-major indexing. A(i,j), A(k), A(:,j),

element-wise. Use A\b, not inv(A)*b.

  • *, /, \, and ^ are matrix operations; dotted forms are

before operations that could accidentally form an outer result.

  • Since R2016b, compatible dimensions expand implicitly. Assert intended shape

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