pymoo

pymoo is a skill for Claude Code, Codex from foryourhealth111-pixel/Vibe-Skills. It costs 46 tokens per session (4,135 once invoked), scanned A, a copy of pymoo, Apache-2.0.

A Python framework for optimization problems with one or several competing goals. It can find trade-offs, such as designs that balance cost, strength, and performance, instead of choosing only one goal.

In plain words
What is it for?
Use it for engineering design, constrained optimization, evolutionary algorithms, benchmark problems, and Pareto-front analysis.
Why use it?
It provides standard algorithms and ways to handle constraints, so you do not need to build multi-objective optimization methods from scratch.

Skill for Claude CodeCodex

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

Good fit Use it for engineering design, constrained optimization, evolutionary algorithms, benchmark problems, and Pareto-front analysis.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/foryourhealth111-pixel/vibe-skills/pymoo
About the project

Vibe-Skills is a collection and routing system that helps AI agents discover, select, and coordinate specialized skills for completing tasks. It is intended for agents that need to organize workflows across many installed capabilities. The catalogue entries are skills and an agent belonging to this system.

foryourhealth111-pixel/Vibe-Skills · 3,262 stars · on GitHub

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 foryourhealth111-pixel/Vibe-Skills --skill pymoo
Clone the repo
git clone --depth 1 https://github.com/foryourhealth111-pixel/Vibe-Skills

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 pymoo

README.md
[![agentmods](https://agentmods.dev/badge/skills/foryourhealth111-pixel/vibe-skills/pymoo/github.svg)](https://agentmods.dev/skills/foryourhealth111-pixel/vibe-skills/pymoo)
Your own site
<a href="https://agentmods.dev/skills/foryourhealth111-pixel/vibe-skills/pymoo"><img src="https://agentmods.dev/badge/skills/foryourhealth111-pixel/vibe-skills/pymoo/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 pymoo

Your own site · 80×15
<a href="https://agentmods.dev/skills/foryourhealth111-pixel/vibe-skills/pymoo"><img src="https://agentmods.dev/badge/skills/foryourhealth111-pixel/vibe-skills/pymoo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,135 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 94% copy Near-identical to another mod 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 $0.00046 $0.04135
Opus 5 $0.00023 $0.02067
Sonnet 5 $0.00009 $0.00827
Haiku 4.5 $0.00005 $0.00413

Measured 9d ago against content hash 5855d5a94258, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

pymoo 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 9d ago.

The scan reads SKILL.md. This mod also ships 5 executable files (scripts/custom_problem_example.py, scripts/decision_making_example.py, scripts/many_objective_example.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

94% identical to pymoo — 5 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

bundled/skills/pymoo/SKILL.md · 573 lines

How it starts

The opening of the file, as written. The whole thing — 573 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pymoo - Multi-Objective Optimization in Python

Routing Boundary

Use this skill only for pymoo, NSGA-II/NSGA, Pareto-front analysis, multi-objective optimization, constrained optimization, and pymoo algorithm implementation. Do not use it for generic optimization planning, experiment design, gradient descent, Bayesian modeling, PyMC, or causal analysis.

Overview

Pymoo is a comprehensive Python framework for optimization with emphasis on multi-objective problems. Solve single and multi-objective optimization using state-of-the-art algorithms (NSGA-II/III, MOEA/D), benchmark problems (ZDT, DTLZ), customizable genetic operators, and multi-criteria decision making methods. Excels at finding trade-off solutions (Pareto fronts) for problems with conflicting objectives.

When to Use This Skill

This skill should be used when:

  • Solving optimization problems with one or multiple objectives
  • Finding Pareto-optimal solutions and analyzing trade-offs
  • Implementing evolutionary algorithms (GA, DE, PSO, NSGA-II/III)
  • Working with constrained optimization problems
  • Benchmarking algorithms on standard test problems (ZDT, DTLZ, WFG)
  • Customizing genetic operators (crossover, mutation, selection)
  • Visualizing high-dimensional optimization results
  • Making decisions from multiple competing solutions
  • Handling binary, discrete, continuous, or mixed-variable problems

Core Concepts

The Unified Interface

Pymoo uses a consistent minimize() function for all optimization tasks:

from pymoo.optimize import minimize

result = minimize(
    problem,        # What to optimize
    algorithm,      # How to optimize
    termination,    # When to stop
    seed=1,
    verbose=True
)

Result object contains:

  • result.X: Decision variables of optimal solution(s)
  • result.F: Objective values of optimal solution(s)
  • result.G: Constraint violations (if constrained)
  • result.algorithm: Algorithm object with history

Problem Types

Single-objective: One objective to minimize/maximize Multi-objective: 2-3 conflicting objectives → Pareto front Many-objective: 4+ objectives → High-dimensional Pareto front Constrained: Objectives + inequality/equality constraints Dynamic: Time-varying objectives or constraints

Read the full file on GitHub · 573 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. 9d ago First seen · 573 lines · 46 tokens per session scan A 5855d5a94258

Subscribe to this mod's changes

pymoo is a skill published in the GitHub repository foryourhealth111-pixel/Vibe-Skills (3,262 stars, last pushed 12d ago), licensed Apache-2.0. It adds 46 tokens to every session and 4,135 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to pymoo, differing in 5 lines, and is treated as a copy.

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