Marine Carbonate Chemistry
K-Dense-AI/scientific-agent-skills
Solves seawater carbonate chemistry with PyCO2SYS for chemical oceanography, ocean acidification, and marine carbon-cycle research.
Query the NIST Chemistry WebBook (which includes JANAF thermochemical tables) for standard experimental thermochemistry properties.
MITAuto-check passed
Install Mat DB Nist Janaf
$ npx skills add learningmatter-mit/AtomisticSkills --skill mat-db-nist-janaf -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-db-nist-janaf --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-db-nist-janaf .claude/skills/mat-db-nist-janaf && 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-db-nist-janaf" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-db-nist-janaf into .claude/skills/mat-db-nist-janaf/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-db-nist-janaf", 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-db-nist-janafType 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-db-nist-janaf -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-db-nist-janaf --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-db-nist-janaf .agents/skills/mat-db-nist-janaf && 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-db-nist-janaf" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-db-nist-janaf into .agents/skills/mat-db-nist-janaf/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-db-nist-janaf", 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-db-nist-janaf -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-db-nist-janaf --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-db-nist-janaf .cursor/skills/mat-db-nist-janaf && 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-db-nist-janaf" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-db-nist-janaf into .cursor/skills/mat-db-nist-janaf/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-db-nist-janaf", 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-db-nist-janaf--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-db-nist-janaf -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-db-nist-janaf --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-db-nist-janaf .gemini/skills/mat-db-nist-janaf && 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-db-nist-janaf" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-db-nist-janaf into .gemini/skills/mat-db-nist-janaf/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-db-nist-janaf", 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-db-nist-janafInstalls 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-db-nist-janaf -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-db-nist-janaf .github/skills/mat-db-nist-janaf && 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-db-nist-janaf" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-db-nist-janaf into .github/skills/mat-db-nist-janaf/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-db-nist-janaf", 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-db-nist-janaf -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-db-nist-janaf --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-db-nist-janaf .opencode/skills/mat-db-nist-janaf && 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-db-nist-janaf" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-db-nist-janaf into .opencode/skills/mat-db-nist-janaf/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-db-nist-janaf", 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-db-nist-janaf- GitHub stars
- 176
- Token cost
- ~518 tokens
- SKILL.md length
- 207 words
- Files
- 4 (incl. scripts)
- Skills in repo
- 129
- Repo updated
- First seen
- Licence
- MIT
At a glance
Query the NIST Chemistry WebBook (which includes JANAF thermochemical tables) for standard experimental thermochemistry properties.
- SKILL.md covers Goal, Instructions, Constraints and References
- Runs Python scripts from its folder
What it does
Mat DB Nist Janaf is an agent skill from learningmatter-mit/AtomisticSkills. Query the NIST Chemistry WebBook (which includes JANAF thermochemical tables) for standard experimental thermochemistry properties.
Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts (for example `examples/webbook-methane/README.md`, `examples/webbook-methane/methane_thermo.json` and `scripts/query_janaf.py`).
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-db-nist-janaf”
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/ (Python), 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):
webbook.nist.govgithub.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 DB Nist Janaf loads about 518 tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 207 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). 207 words, ~518 tokens.
Download SKILL.mdSave it as
.claude/skills/mat-db-nist-janaf/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- mat-db-nist-janaf
- description
- Query the NIST Chemistry WebBook (which includes JANAF thermochemical tables) for standard experimental thermochemistry properties.
- metadata.category
- materials
- metadata.venv
- cpu
mat-db-nist-janaf
Goal
To query experimental temperature-dependent thermodynamic properties and standard states (e.g. Standard Enthalpy of Formation $\Delta_f H^\circ_{298}$, Standard Entropy $S^\circ_{298}$, and $C_p$) from the NIST Chemistry WebBook and JANAF tables for benchmarking against DFT/MLIP calculations.
Instructions
Step 1. Query Thermochemistry Data
Use the query_janaf.py script to fetch thermodynamic data for a given chemical formula. The script automatically searches the WebBook for the closest matching standard element or compound and parses the HTML tables to extract the gas-phase or condensed-phase standard thermochemistry values.
${CLAUDE_SKILL_DIR}/../../venv/run cpu python ${CLAUDE_SKILL_DIR}/scripts/query_janaf.py <formula> <output_json>Parameters:
formula: The chemical formula to query (e.g.,CH4,CO2,H2O).output_json: Path to the output JSON file where results will be stored.
Constraints
- Environments: The scripts require the
cpuenvironment. - Scraping Dependability: This script utilizes HTML scraping (
beautifulsoup4). If the NIST WebBook layout changes in the future, the table selectors may need to be updated. - Isotopes: By default, the script skips explicitly isotopically-labelled variants (unless it's the only match) to return the standard natural-abundance compound.
References
- Linstrom, P.J. and Mallard, W.G., Eds., NIST Chemistry WebBook, NIST Standard Reference Database Number 69, National Institute of Standards and Technology, Gaithersburg MD. URL
- Chase, M.W., Jr., NIST-JANAF Thermochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951.
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 3 other files (scripts) in skills/mat-db-nist-janaf of learningmatter-mit/AtomisticSkills.
- SKILL.md
- examples/webbook-methane/README.md
- examples/webbook-methane/methane_thermo.json
- scripts/query_janaf.py
Open the folder on GitHubat commit 6257444
Compare with similar skills
Mat DB Nist Janaf 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 DB Nist Janaf this skilllearningmatter-mit/AtomisticSkills | 176 | — | ~518 | Automated safety check: Pass | MIT | |
| Marine Carbonate ChemistryK-Dense-AI/scientific-agent-skills | 48k | 1 repos | ~2.4k | Automated safety check: Pass | MIT | |
| Performing Nist Csf Maturity Assessmentmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~1.5k | Automated safety check: Pass | Apache-2.0 | |
| Executing Nist Rmf Authorization To Operatemukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.2k | Automated safety check: Pass | Apache-2.0 | |
| HTML Ppt Zhangzara Matnexu-io/open-design | 100k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Conducting Cyber Risk Assessment With Nist 800 30mukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.5k | Automated safety check: Pass | Apache-2.0 |
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Questions about Mat DB Nist Janaf
What does Mat DB Nist Janaf do?
Query the NIST Chemistry WebBook (which includes JANAF thermochemical tables) for standard experimental thermochemistry properties. Mat DB Nist Janaf is an agent skill from learningmatter-mit/AtomisticSkills. Query the NIST Chemistry WebBook (which includes JANAF thermochemical tables) for standard experimental thermochemistry properties.
How do I install Mat DB Nist Janaf in Claude Code?
Run `npx skills add learningmatter-mit/AtomisticSkills --skill mat-db-nist-janaf -a claude-code`. Or copy the skill folder (skills/mat-db-nist-janaf in learningmatter-mit/AtomisticSkills) into .claude/skills/mat-db-nist-janaf in your project. Claude Code loads it when a task matches its description.
How do I install Mat DB Nist Janaf in Codex?
Run `npx skills add learningmatter-mit/AtomisticSkills --skill mat-db-nist-janaf -a codex`. Or copy the skill folder (skills/mat-db-nist-janaf in learningmatter-mit/AtomisticSkills) into .agents/skills/mat-db-nist-janaf in your project. Codex loads it when a task matches its description.
Can I use Mat DB Nist Janaf 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-db-nist-janaf -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-db-nist-janaf, .gemini/skills/mat-db-nist-janaf, .github/skills/mat-db-nist-janaf and .opencode/skills/mat-db-nist-janaf in your project.
What does Mat DB Nist Janaf need to run?
Going by SKILL.md and its folder, Mat DB Nist Janaf needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Mat DB Nist Janaf access the network?
SKILL.md names 2 domains. As links in the text: webbook.nist.gov and github.com. This is read from the text; nothing was executed.
Is Mat DB Nist Janaf 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 DB Nist Janaf use?
Mat DB Nist Janaf 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 DB Nist Janaf use?
About 518 tokens (SKILL.md is roughly 2.1k 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 DB Nist Janaf?
Skills that share tags, products or a category with Mat DB Nist Janaf: Marine Carbonate Chemistry (K-Dense-AI/scientific-agent-skills, 48k stars), Performing Nist Csf Maturity Assessment (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Executing Nist Rmf Authorization To Operate (mukul975/Anthropic-Cybersecurity-Skills, 34k stars) and HTML Ppt Zhangzara Mat (nexu-io/open-design, 100k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Mat DB Nist Janaf?
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.