calphad-workflow

calphad-workflow is a skill for Claude Code, Codex from SFETNI/Deep-Matter-Chem-Skills. It costs 5 tokens per session (3,917 once invoked), scanned A, original, MIT.

A guide to CALPHAD, short for Calculation of Phase Diagrams, a method that uses thermodynamic models to predict which phases of a material are stable at different temperatures, pressures, and compositions.

In plain words
What is it for?
Use it for phase diagrams, equilibrium and metastable calculations, solidification, chemical potentials, and workflows connected to experiments, DFT, diffusion, precipitation, or phase-field models.
Why use it?
It helps produce thermodynamic results that account for the chosen database, phase models, assumptions, and uncertainty instead of treating a phase diagram as a simple lookup table.

Skill for Claude CodeCodex

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

Good fit Use it for phase diagrams, equilibrium and metastable calculations, solidification, chemical potentials, and workflows connected to experiments, DFT, diffusion, precipitation, or phase-field models.

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Install with agentmods
npx agentmods add skills/sfetni/deep-matter-chem-skills/calphad-workflow
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 SFETNI/Deep-Matter-Chem-Skills --skill calphad-workflow
Clone the repo
git clone --depth 1 https://github.com/SFETNI/Deep-Matter-Chem-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 calphad-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/sfetni/deep-matter-chem-skills/calphad-workflow/github.svg)](https://agentmods.dev/skills/sfetni/deep-matter-chem-skills/calphad-workflow)
Your own site
<a href="https://agentmods.dev/skills/sfetni/deep-matter-chem-skills/calphad-workflow"><img src="https://agentmods.dev/badge/skills/sfetni/deep-matter-chem-skills/calphad-workflow/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 calphad-workflow

Your own site · 80×15
<a href="https://agentmods.dev/skills/sfetni/deep-matter-chem-skills/calphad-workflow"><img src="https://agentmods.dev/badge/skills/sfetni/deep-matter-chem-skills/calphad-workflow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 5 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,917 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 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 $0.00005 $0.03917
Opus 5 $0.00003 $0.01959
Sonnet 5 $0.00001 $0.00783
Haiku 4.5 $0.00001 $0.00392

Measured 12d ago against content hash c1a7a5af3321, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

calphad-workflow 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 12d 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/thermodynamics-calphad/calphad-workflow/SKILL.md · 274 lines

How it starts

The opening of the file, as written. The whole thing — 274 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CALPHAD Workflow

Description

This skill covers CALPHAD workflows for computational thermodynamics and materials design: thermodynamic database selection, equilibrium and metastable calculations, binary and ternary phase diagrams, Scheil solidification, chemical potentials, activities, driving forces, parameter assessment, uncertainty, and reproducible coupling to DFT, experiments, materials databases, precipitation, solidification, diffusion, and phase-field models. Invoke this skill when an agent needs phase stability or thermodynamic inputs from assessed Gibbs-energy models rather than from a single DFT calculation or empirical rule.

Domain Context

CALPHAD, short for CALculation of PHAse Diagrams, represents the Gibbs energy of each phase as a function of temperature, pressure, composition, and internal sublattice degrees of freedom. Equilibria are obtained by minimizing the total Gibbs energy subject to mass balance and phase constraints. A CALPHAD database is not just a table of phase boundaries; it is a set of model functions, parameters, reference states, phase descriptions, and assessed experimental or first-principles data.

The validity of a CALPHAD result is therefore the validity of the database assessment. Results are strongest inside the assessed composition, temperature, pressure, and phase-space domain. Extrapolated ternaries, quaternaries, high-temperature liquids, metastable phases, magnetic transitions, order-disorder models, and non-stoichiometric compounds can be useful but must be treated as database-dependent predictions. [EXPERT REVIEW NEEDED]

CALPHAD complements DFT rather than replacing it. DFT gives 0 K or finite-temperature free-energy contributions for specific configurations; CALPHAD integrates experimental phase equilibria, calorimetry, activities, DFT formation energies, magnetic terms, solution models, and compound-energy formalism into thermodynamic descriptions usable across composition and temperature. Combining them requires consistent reference states, phases, and provenance.

Read the full file on GitHub · 274 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. 12d ago First seen · 274 lines · 5 tokens per session scan A c1a7a5af3321

Subscribe to this mod's changes

calphad-workflow is a skill published in the GitHub repository SFETNI/Deep-Matter-Chem-Skills (6 stars, last pushed 1mo ago), licensed MIT. It adds 5 tokens to every session and 3,917 once invoked, about $0.0000 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 2026-08-31.

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