Energy Calculator
benchflow-ai/skillsbench
Calculate per-second RMS energy from audio files. An agent skill from benchflow-ai/skillsbench.
A library of ground-state element structures and their energies calculated from MLIPs.
MITAuto-check passed
Install Mat Elemental Energies
$ npx skills add learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-elemental-energies --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/learningmatter-mit/AtomisticSkills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/mat-elemental-energies .claude/skills/mat-elemental-energies && rm -rf skills-srcUse ~/.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/
Install the "mat-elemental-energies" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-elemental-energies into .claude/skills/mat-elemental-energies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-elemental-energies", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-elemental-energiesType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-elemental-energies --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/learningmatter-mit/AtomisticSkills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/mat-elemental-energies .agents/skills/mat-elemental-energies && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "mat-elemental-energies" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-elemental-energies into .agents/skills/mat-elemental-energies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-elemental-energies", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-elemental-energies --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/learningmatter-mit/AtomisticSkills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/mat-elemental-energies .cursor/skills/mat-elemental-energies && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "mat-elemental-energies" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-elemental-energies into .cursor/skills/mat-elemental-energies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-elemental-energies", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/learningmatter-mit/AtomisticSkills.git --path skills/mat-elemental-energies--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-elemental-energies --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/learningmatter-mit/AtomisticSkills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/mat-elemental-energies .gemini/skills/mat-elemental-energies && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "mat-elemental-energies" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-elemental-energies into .gemini/skills/mat-elemental-energies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-elemental-energies", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install learningmatter-mit/AtomisticSkills mat-elemental-energiesInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/learningmatter-mit/AtomisticSkills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/mat-elemental-energies .github/skills/mat-elemental-energies && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "mat-elemental-energies" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-elemental-energies into .github/skills/mat-elemental-energies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-elemental-energies", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-elemental-energies --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/learningmatter-mit/AtomisticSkills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/mat-elemental-energies .opencode/skills/mat-elemental-energies && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "mat-elemental-energies" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-elemental-energies into .opencode/skills/mat-elemental-energies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-elemental-energies", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
mat-elemental-energies- GitHub stars
- 176
- Token cost
- ~646 tokens
- SKILL.md length
- 284 words
- Files
- 130 (incl. scripts)
- Skills in repo
- 129
- Repo updated
- First seen
- Licence
- MIT
At a glance
A library of ground-state element structures and their energies calculated from MLIPs.
- SKILL.md covers Goal, Instructions, Library Status and Constraints
What it does
Mat Elemental Energies is an agent skill from learningmatter-mit/AtomisticSkills. A library of ground-state element structures and their energies calculated from MLIPs. Used to calculate formation energies of compounds.
Its SKILL.md is about 650 tokens, which your agent loads only when the skill is triggered. The skill folder holds 130 other files, including scripts (for example `resources/CHGNet-MPtrj-2023.12.1-2.7M-PES_energies.json`, `resources/CHGNet-MPtrj-2024.2.13-11M-PES_energies.json` and `resources/CHGNet-MatPES-PBE-2025.2.10-2.7M-PES_energies.json`).
The repository describes itself as: Integrating AtomisticSkills into Agentic IDEs (Cursor, Claude Code, Codex, Google Antigravity, Hermes Agent, etc). The licence is MIT.
Example prompts
- “/mat-elemental-energies”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 6257444. 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
Ships 1 file in scripts/, which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
github.com
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
Mat Elemental Energies loads about 646 tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 284 words of instructions outside code blocks.
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); the scripts in this folder are not scanned.
SKILL.md
The full file from learningmatter-mit/AtomisticSkills at commit 6257444, republished under its MIT licence (© learningmatter-mit). 284 words, ~646 tokens.
Download SKILL.mdSave it as
.claude/skills/mat-elemental-energies/SKILL.md (or your agent's skills folder). This skill also uses 129 other files; get the full folder from GitHub.- name
- mat-elemental-energies
- description
- A library of ground-state element structures and their energies calculated from MLIPs. Used to calculate formation energies of compounds.
- metadata.category
- materials
- metadata.venv
- cpu
Elemental Energies
Goal
To provide a centralized library of the most stable phases (ground states) for each element and their corresponding reference energies calculated using different Machine Learning Interatomic Potentials (MLIPs). This avoids redundant relaxations and ensure consistency in thermodynamics calculations (e.g., formation energy, stability).
Instructions
1. Retrieve Elemental Energies
To get the energies for a list of elements from a specific checkpoint:
${CLAUDE_SKILL_DIR}/../../venv/run cpu python ${CLAUDE_SKILL_DIR}/scripts/get_elemental_energies.py --elements Li Fe O --checkpoint mace-mp-mediumLibrary Status
As of 2026-01-30, the library is fully expanded and contains 89 elements (Ground states from H to Lr) across 36 MLIP variants, including:
- MACE: MACE-MP (S/M/L), MACE-MH-0/1 (all heads), MACE-OMAT (S/M), MACE-MATPES (PBE/R2SCAN).
- MatGL: CHGNet (MPtrj, MatPES), M3GNet (MP, MatPES), TensorNet (MatPES).
- FairChem: UMA (S/M) with all heads (omat, omol, oc20).
Constraints
- Materials Project: Structures must be queried from Materials Project to ensure they represent the true ground-state phases.
- Naming: Library files must follow the
<checkpoint_name>_energies.jsonformat. - Units: Energies are stored as eV/atom (total potential energy of the relaxed structure divided by the number of atoms).
- Relaxation: The stored value comes from relaxing both cell and coordinates
(
relax_cell=True). A positions-only relaxation leaves the reference above the potential's own minimum and biases every formation energy that uses it. - Molecular-crystal elements are sensitive: for O, N, F, Cl, H the MP ground state
is a van der Waals-bound molecular crystal whose MLIP-relaxed cell differs a lot from
the DFT cell, so the cell relaxation matters more here than for metals. With
TensorNet-PES-MatPES-PBE-2025.2, mp-12957 (O2) gives -5.118 eV/atom fully relaxed versus -4.968 positions-only. More than one MP entry can also tie atenergy_above_hull = 0for these elements (O2: mp-12957 and mp-1524462), so pin thematerial_idrather than relying on a formula lookup returning a stable order.
Author: Bowen Deng Contact: GitHub @learningmatter-mit
© learningmatter-mit, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 129 other files (scripts) in skills/mat-elemental-energies of learningmatter-mit/AtomisticSkills.
- SKILL.md
- resources/CHGNet-MPtrj-2023.12.1-2.7M-PES_energies.json
- resources/CHGNet-MPtrj-2024.2.13-11M-PES_energies.json
- resources/CHGNet-MatPES-PBE-2025.2.10-2.7M-PES_energies.json
- resources/CHGNet-MatPES-r2SCAN-2025.2.10-2.7M-PES_energies.json
- resources/M3GNet-MP-2021.2.8-DIRECT-PES_energies.json
- resources/M3GNet-MP-2021.2.8-PES_energies.json
- resources/M3GNet-MatPES-PBE-v2025.1-PES_energies.json
- resources/M3GNet-MatPES-r2SCAN-v2025.1-PES_energies.json
- resources/MACE-MATPES-PBE-0_energies.json
- resources/MACE-MATPES-R2SCAN-0_energies.json
- resources/MACE-MH-0_matpes_r2scan_energies.json
- resources/MACE-MH-0_oc20_usemppbe_energies.json
- resources/MACE-MH-0_omat_pbe_energies.json
- resources/MACE-MH-0_omol_energies.json
- resources/MACE-MH-0_spice_wB97M_energies.json
- resources/MACE-MH-1_matpes_r2scan_energies.json
- resources/MACE-MH-1_oc20_usemppbe_energies.json
- resources/MACE-MH-1_omat_pbe_energies.json
- resources/MACE-MH-1_omol_energies.json
- … and 110 more
Open the folder on GitHubat commit 6257444
Compare with similar skills
Mat Elemental Energies 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Mat Elemental Energies this skilllearningmatter-mit/AtomisticSkills | 176 | — | ~646 | Automated safety check: Pass | MIT | |
| Energy Calculatorbenchflow-ai/skillsbench | 1.8k | — | ~437 | Automated safety check: Pass | Apache-2.0 | |
| Bio Free Energy CalculationsGPTomics/bioSkills | 1.2k | 1 repos | ~4.5k | Automated safety check: Pass | MIT | |
| Structured Element ExtractionTHUYRan/Legal-Skills-Chinese | 873 | — | ~8.4k | Automated safety check: Pass | None | |
| Structured Datathedaviddias/Front-End-Checklist | 74k | — | ~420 | Automated safety check: Pass | MIT | |
| Bio Structural Biology Modern Structure PredictionFreedomIntelligence/OpenClaw-Medical-Skills | 3.1k | 1 repos | ~2.5k | Automated safety check: Pass | None |
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Questions about Mat Elemental Energies
What does Mat Elemental Energies do?
A library of ground-state element structures and their energies calculated from MLIPs. Mat Elemental Energies is an agent skill from learningmatter-mit/AtomisticSkills. A library of ground-state element structures and their energies calculated from MLIPs.
How do I install Mat Elemental Energies in Claude Code?
Run `npx skills add learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a claude-code`. Or copy the skill folder (skills/mat-elemental-energies in learningmatter-mit/AtomisticSkills) into .claude/skills/mat-elemental-energies in your project. Claude Code loads it when a task matches its description.
How do I install Mat Elemental Energies in Codex?
Run `npx skills add learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a codex`. Or copy the skill folder (skills/mat-elemental-energies in learningmatter-mit/AtomisticSkills) into .agents/skills/mat-elemental-energies in your project. Codex loads it when a task matches its description.
Can I use Mat Elemental Energies 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 learningmatter-mit/AtomisticSkills --skill mat-elemental-energies -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mat-elemental-energies, .gemini/skills/mat-elemental-energies, .github/skills/mat-elemental-energies and .opencode/skills/mat-elemental-energies in your project.
What does Mat Elemental Energies need to run?
SKILL.md names no scripts, command-line tools or credentials: Mat Elemental Energies is instructions for the agent only. Our summary lists: Python 3.
Does Mat Elemental Energies access the network?
SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.
Is Mat Elemental Energies 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Mat Elemental Energies use?
Mat Elemental Energies 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 Mat Elemental Energies use?
About 646 tokens (SKILL.md is roughly 2.6k 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 Mat Elemental Energies?
Skills that share tags, products or a category with Mat Elemental Energies: Energy Calculator (benchflow-ai/skillsbench, 1.8k stars), Bio Free Energy Calculations (GPTomics/bioSkills, 1.2k stars), Structured Element Extraction (THUYRan/Legal-Skills-Chinese, 873 stars) and Structured Data (thedaviddias/Front-End-Checklist, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Mat Elemental Energies?
learningmatter-mit (a GitHub organization) maintains it in learningmatter-mit/AtomisticSkills, which has 176 GitHub stars. The repository holds 129 skills in this directory. The repository was last updated on October 7, 2026.
Source: learningmatter-mit/AtomisticSkills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.