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Agent skill

Math Model Selector

by parcadei in parcadei/Continuous-Claude-v3

Routes problems to appropriate mathematical frameworks using expert heuristics

MITAuto-check passed

Install Math Model Selector

skills CLI
$ npx skills add parcadei/Continuous-Claude-v3 --skill math-model-selector -a claude-code

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

GitHub CLI
$ gh skill install parcadei/Continuous-Claude-v3 math-model-selector --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/parcadei/Continuous-Claude-v3.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/math/math-model-selector .claude/skills/math-model-selector && 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
math-model-selector
GitHub stars
3.9k
Used in
3 other repos
Token cost
~841 tokens
SKILL.md length
242 words
Files
1
Skills in repo
141
Repo updated
First seen
Licence
MIT

At a glance

Routes problems to appropriate mathematical frameworks using expert heuristics

  • Works in 5 steps: Identify the quantity → Characterize change → Check for uncertainty → …
  • SKILL.md covers When to Use, Process, Key Questions to Ask and Output Format, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Math Model Selector is an agent skill from parcadei/Continuous-Claude-v3. Routes problems to appropriate mathematical frameworks using expert heuristics

Its SKILL.md is about 840 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Context management for Claude Code. Hooks maintain state via ledgers and handoffs. MCP execution without context pollution. Agent orchestration with isolated context windows. The licence is MIT.

Example prompts

  • “Use the math-model-selector skill to route problems to appropriate mathematical frameworks using expert heuristics”
  • “/math-model-selector”

Workflow steps

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

  1. Identify the quantity
  2. Characterize change
  3. Check for uncertainty
  4. Optimization check
  5. Answer precision

What it can do on your machine

Read from SKILL.md and the folder at commit d07ff4b. 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

    No scripts in the folder and no shell commands in SKILL.md.

    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

Math Model Selector loads about 841 tokens when it runs. Until then it costs about 25 tokens; SKILL.md has 242 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~25
When it runs · the whole SKILL.md, loaded when a task matches
~841

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 parcadei/Continuous-Claude-v3 at commit d07ff4b, republished under its MIT licence (© parcadei). 242 words, ~841 tokens.

Download SKILL.mdSave it as .claude/skills/math-model-selector/SKILL.md (or your agent's skills folder).
name
math-model-selector
description
Routes problems to appropriate mathematical frameworks using expert heuristics

Math Model Selector

When to Use

Trigger on phrases like:

  • "what math should I use"
  • "which mathematical framework"
  • "how do I model this"
  • "what kind of problem is this"
  • "formalize this problem"

Use when user has a problem but doesn't know which mathematical domain applies.

Process

Guide user through decision tree using Polya-style questions:

1. Identify the quantity

Ask: "What quantity or phenomenon are you trying to understand?"

  • Physics problem -> conservation laws, differential equations
  • Economics -> equilibrium, optimization
  • Data patterns -> statistics, regression
2. Characterize change

Ask: "What changes, and how does it change?"

  • Discrete steps -> difference equations, recurrences
  • Continuous rate -> ODEs
  • Rate of rate matters -> 2nd order ODEs
  • Spatial variation -> PDEs
3. Check for uncertainty

Ask: "Is there randomness or uncertainty involved?"

  • Deterministic -> standard analysis
  • Epistemic uncertainty -> Bayesian methods
  • Random process -> probability theory, stochastic processes
4. Optimization check

Ask: "Are you optimizing something?"

  • Convex objective -> linear/quadratic programming
  • Non-convex -> gradient descent, evolutionary methods
  • Discrete choices -> combinatorics, integer programming
5. Answer precision

Ask: "What level of answer do you need?"

  • Rough estimate -> dimensional analysis
  • Qualitative behavior -> phase portraits, stability
  • Numerical answer -> simulation
  • Exact closed form -> analytical methods

Key Questions to Ask

  1. What changes? (discrete vs continuous)
  2. What causes the change? (rate dependencies)
  3. What's random? (uncertainty type)
  4. What's being optimized? (objective function)
  5. How precise? (qualitative vs quantitative)

Output Format

Framework Recommendation:
- Primary: [framework name]
- Why: [one-sentence justification]

Starting Point:
- Key equations: [relevant formulas]
- Initial approach: [first step]

Tools to Use:
- [specific script or computation tool]

Related Skills:
- [domain skill to activate next]

Example Interaction

User: I want to model how a rumor spreads through a population

Claude: Let me help you find the right framework.

Q1: What quantity are we tracking?
> Number of people who heard the rumor over time.

Q2: What causes it to change?
> Spread rate depends on who knows and who doesn't.

Q3: Is there randomness?
> Assume deterministic (average behavior) for now.

Q4: Optimizing anything?
> No, just understanding dynamics.

Q5: What precision?
> Qualitative behavior, maybe predict peak rate.

Framework Recommendation:
- Primary: First-order ODE (logistic growth)
- Why: Rate depends on current state nonlinearly

Starting Point:
- dN/dt = r * N * (1 - N/K)
- N = heard count, K = population, r = spread rate

Tools:
- sympy_compute.py solve (equilibrium)
- Phase line for qualitative behavior

Related Skills:
- math/math-intuition-builder (understand the model)
- odes-pdes/first-order-odes (solve it)

Co-activates

After framework selection, suggest:

  • math-intuition-builder - to understand the framework
  • Relevant domain skill - for actual computation
  • math-mode - for symbolic verification

© parcadei, MIT. 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 .claude/skills/math/math-model-selector of parcadei/Continuous-Claude-v3.

Open the folder on GitHubat commit d07ff4b

Used in 3 other repositories

We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 3 other GitHub owners. This page covers the copy in parcadei/Continuous-Claude-v3, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Math Model Selector 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.

Math Model Selector compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Math Model Selector this skillparcadei/Continuous-Claude-v33.9k3 repos~841Automated safety check: PassMIT
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Has Selectorthedaviddias/Front-End-Checklist74k—~547Automated safety check: PassMIT
OmniRoute Routing CLIdiegosouzapw/OmniRoute74k1 repos~342Automated safety check: PassMIT
OmniRoute Combo Routingdiegosouzapw/OmniRoute74k—~2.1kAutomated safety check: PassMIT
Math Olympiadanthropics/claude-plugins-official38k—~5kAutomated safety check: PassApache-2.0

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Questions about Math Model Selector

What does Math Model Selector do?

Routes problems to appropriate mathematical frameworks using expert heuristics. Math Model Selector is an agent skill from parcadei/Continuous-Claude-v3.

How do I install Math Model Selector in Claude Code?

Run `npx skills add parcadei/Continuous-Claude-v3 --skill math-model-selector -a claude-code`. Or copy the skill folder (.claude/skills/math/math-model-selector in parcadei/Continuous-Claude-v3) into .claude/skills/math-model-selector in your project. Claude Code loads it when a task matches its description.

How do I install Math Model Selector in Codex?

Run `npx skills add parcadei/Continuous-Claude-v3 --skill math-model-selector -a codex`. Or copy the skill folder (.claude/skills/math/math-model-selector in parcadei/Continuous-Claude-v3) into .agents/skills/math-model-selector in your project. Codex loads it when a task matches its description.

Can I use Math Model Selector 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 parcadei/Continuous-Claude-v3 --skill math-model-selector -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/math-model-selector, .gemini/skills/math-model-selector, .github/skills/math-model-selector and .opencode/skills/math-model-selector in your project.

What does Math Model Selector need to run?

SKILL.md names no scripts, command-line tools or credentials: Math Model Selector is instructions for the agent only.

Does Math Model Selector 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 Math Model Selector 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 Math Model Selector use?

Math Model Selector is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Math Model Selector use?

About 841 tokens (SKILL.md is roughly 3.4k 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 Math Model Selector?

Skills that share tags, products or a category with Math Model Selector: Intelligence Route (ruvnet/ruflo, 74k stars), Has Selector (thedaviddias/Front-End-Checklist, 74k stars), OmniRoute Routing CLI (diegosouzapw/OmniRoute, 74k stars) and OmniRoute Combo Routing (diegosouzapw/OmniRoute, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Math Model Selector?

parcadei (a GitHub user) maintains it in parcadei/Continuous-Claude-v3, which has 3,940 GitHub stars. The repository holds 141 skills in this directory. The repository was last updated on January 26, 2026.

Source: parcadei/Continuous-Claude-v3 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.