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.
Look up chemical data from NIST Chemistry WebBook (thermochemistry, spectra, properties)
Apache-2.0Auto-check passed
Install Nistwebbook
$ npx skills add lamm-mit/scienceclaw --skill nistwebbook -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install lamm-mit/scienceclaw nistwebbook --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/lamm-mit/scienceclaw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/nistwebbook .claude/skills/nistwebbook && 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 "nistwebbook" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/nistwebbook into .claude/skills/nistwebbook/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nistwebbook", 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/lamm-mit/scienceclaw/tree/main/skills/nistwebbookType 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 lamm-mit/scienceclaw --skill nistwebbook -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install lamm-mit/scienceclaw nistwebbook --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/nistwebbook .agents/skills/nistwebbook && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "nistwebbook" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/nistwebbook into .agents/skills/nistwebbook/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nistwebbook", 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 lamm-mit/scienceclaw --skill nistwebbook -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install lamm-mit/scienceclaw nistwebbook --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/nistwebbook .cursor/skills/nistwebbook && 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 "nistwebbook" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/nistwebbook into .cursor/skills/nistwebbook/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nistwebbook", 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/lamm-mit/scienceclaw.git --path skills/nistwebbook--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 lamm-mit/scienceclaw --skill nistwebbook -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install lamm-mit/scienceclaw nistwebbook --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/nistwebbook .gemini/skills/nistwebbook && 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 "nistwebbook" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/nistwebbook into .gemini/skills/nistwebbook/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nistwebbook", 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 lamm-mit/scienceclaw nistwebbookInstalls 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 lamm-mit/scienceclaw --skill nistwebbook -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/nistwebbook .github/skills/nistwebbook && 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 "nistwebbook" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/nistwebbook into .github/skills/nistwebbook/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nistwebbook", 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 lamm-mit/scienceclaw --skill nistwebbook -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install lamm-mit/scienceclaw nistwebbook --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/nistwebbook .opencode/skills/nistwebbook && 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 "nistwebbook" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/nistwebbook into .opencode/skills/nistwebbook/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nistwebbook", 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
nistwebbook- GitHub stars
- 244
- Token cost
- ~505 tokens
- SKILL.md length
- 180 words
- Files
- 3 (incl. scripts)
- Skills in repo
- 86
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Look up chemical data from NIST Chemistry WebBook (thermochemistry, spectra, properties)
- SKILL.md covers Overview, Usage, Parameters and Output, plus 1 more section
- Runs Python scripts from its folder; calls python3 and pip
What it does
Nistwebbook is an agent skill from lamm-mit/scienceclaw. Look up chemical data from NIST Chemistry WebBook (thermochemistry, spectra, properties)
Its SKILL.md is about 510 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including scripts (for example `scripts/nistwebbook_search.py`).
The licence is Apache-2.0.
Example prompts
- “/nistwebbook”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit ab9aba1. 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 2 files in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3pip
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.gov
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
Nistwebbook loads about 505 tokens when it runs. Until then it costs about 25 tokens; SKILL.md has 180 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 lamm-mit/scienceclaw at commit ab9aba1, republished under its Apache-2.0 licence (© lamm-mit). 180 words, ~505 tokens.
Download SKILL.mdSave it as
.claude/skills/nistwebbook/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- nistwebbook
- description
- Look up chemical data from NIST Chemistry WebBook (thermochemistry, spectra, properties)
NIST Chemistry WebBook
Query the NIST Chemistry WebBook for thermochemical, spectral, and property data. Data are from NIST Standard Reference Database 69.
Overview
- Search by compound name, chemical formula, CAS Registry Number, or InChI/InChIKey
- Retrieve thermochemistry, IR/MS/UV-Vis spectra, gas chromatography, and basic properties
- Optional: install
nistchempyfor full programmatic search; otherwise script prints WebBook URLs for manual lookup
Usage
Search by name (requires nistchempy)
python3 {baseDir}/scripts/nistwebbook_search.py --query "water"Look up by CAS number (requires nistchempy)
python3 {baseDir}/scripts/nistwebbook_search.py --cas "7732-18-5"Get WebBook URL only (no nistchempy needed)
python3 {baseDir}/scripts/nistwebbook_search.py --query "methane" --url-onlyLimit results
python3 {baseDir}/scripts/nistwebbook_search.py --query "ethanol" --max-results 3Parameters
| Parameter | Description | Default |
|---|---|---|
--query | Compound name or formula | - |
--cas | CAS Registry Number (e.g. 7732-18-5) | - |
--max-results | Max compounds to return | 5 |
--url-only | Only print NIST WebBook search URL (no nistchempy) | false |
--format | summary or json | summary |
Output
- Summary: Name, formula, CAS RN, molecular weight; links to thermochemistry/spectra on WebBook
- JSON: Structured data when using nistchempy
- Without nistchempy: script prints the WebBook search URL so users can open it in a browser
Notes
- Install for full search:
pip install nistchempy(also needs requests, bs4, pandas) - NIST does not provide an official API; nistchempy is an unofficial wrapper
- Reference: NIST Chemistry WebBook
© lamm-mit, Apache-2.0. 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 2 other files (scripts) in skills/nistwebbook of lamm-mit/scienceclaw.
- SKILL.md
- scripts/__pycache__/nistwebbook_search.cpython-313.pyc
- scripts/nistwebbook_search.py
Open the folder on GitHubat commit ab9aba1
Compare with similar skills
Nistwebbook 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 |
|---|---|---|---|---|---|---|
| Nistwebbook this skilllamm-mit/scienceclaw | 244 | — | ~505 | Automated safety check: Pass | Apache-2.0 | |
| 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 | |
| Conducting Cyber Risk Assessment With Nist 800 30mukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.5k | Automated safety check: Pass | Apache-2.0 | |
| Food Chemistrybrycewang-stanford/Awesome-Journal-Skills | 1.2k | — | ~1.9k | Automated safety check: Pass | MIT |
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Questions about Nistwebbook
What does Nistwebbook do?
Look up chemical data from NIST Chemistry WebBook (thermochemistry, spectra, properties). Nistwebbook is an agent skill from lamm-mit/scienceclaw.
How do I install Nistwebbook in Claude Code?
Run `npx skills add lamm-mit/scienceclaw --skill nistwebbook -a claude-code`. Or copy the skill folder (skills/nistwebbook in lamm-mit/scienceclaw) into .claude/skills/nistwebbook in your project. Claude Code loads it when a task matches its description.
How do I install Nistwebbook in Codex?
Run `npx skills add lamm-mit/scienceclaw --skill nistwebbook -a codex`. Or copy the skill folder (skills/nistwebbook in lamm-mit/scienceclaw) into .agents/skills/nistwebbook in your project. Codex loads it when a task matches its description.
Can I use Nistwebbook 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 lamm-mit/scienceclaw --skill nistwebbook -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nistwebbook, .gemini/skills/nistwebbook, .github/skills/nistwebbook and .opencode/skills/nistwebbook in your project.
What does Nistwebbook need to run?
Going by SKILL.md and its folder, Nistwebbook needs Python for the scripts in its folder and the command-line tools its instructions call (python3 and pip). Our summary lists: Python 3.
Does Nistwebbook access the network?
SKILL.md names 1 domain. As links in the text: webbook.nist.gov. This is read from the text; nothing was executed.
Is Nistwebbook 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 Nistwebbook use?
Nistwebbook is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Nistwebbook use?
About 505 tokens (SKILL.md is roughly 2k 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 Nistwebbook?
Skills that share tags, products or a category with Nistwebbook: 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 Conducting Cyber Risk Assessment With Nist 800 30 (mukul975/Anthropic-Cybersecurity-Skills, 34k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Nistwebbook?
lamm-mit (a GitHub user) maintains it in lamm-mit/scienceclaw, which has 244 GitHub stars. The repository holds 86 skills in this directory. The repository was last updated on August 21, 2026.
Source: lamm-mit/scienceclaw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.