React Performance
affaan-m/ECC
React and Next.js performance optimization patterns adapted from Vercel Engineering's React Best Practices (https://github.com/vercel-labs/agent-skills).
Perform Rietveld refinement from experimental XRD patterns using DARA (BGMN).
$ npx skills add learningmatter-mit/AtomisticSkills --skill mat-xrd-refinement -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-xrd-refinement --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-xrd-refinement .claude/skills/mat-xrd-refinement && 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-xrd-refinement" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-xrd-refinement into .claude/skills/mat-xrd-refinement/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-xrd-refinement", 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-xrd-refinementType 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-xrd-refinement -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-xrd-refinement --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-xrd-refinement .agents/skills/mat-xrd-refinement && 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-xrd-refinement" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-xrd-refinement into .agents/skills/mat-xrd-refinement/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-xrd-refinement", 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-xrd-refinement -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-xrd-refinement --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-xrd-refinement .cursor/skills/mat-xrd-refinement && 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-xrd-refinement" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-xrd-refinement into .cursor/skills/mat-xrd-refinement/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-xrd-refinement", 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-xrd-refinement--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-xrd-refinement -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install learningmatter-mit/AtomisticSkills mat-xrd-refinement --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-xrd-refinement .gemini/skills/mat-xrd-refinement && 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-xrd-refinement" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-xrd-refinement into .gemini/skills/mat-xrd-refinement/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-xrd-refinement", 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-xrd-refinementInstalls 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-xrd-refinement -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-xrd-refinement .github/skills/mat-xrd-refinement && 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-xrd-refinement" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-xrd-refinement into .github/skills/mat-xrd-refinement/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-xrd-refinement", 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-xrd-refinement -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-xrd-refinement --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-xrd-refinement .opencode/skills/mat-xrd-refinement && 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-xrd-refinement" agent skill from https://github.com/learningmatter-mit/AtomisticSkills/tree/main/skills/mat-xrd-refinement into .opencode/skills/mat-xrd-refinement/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mat-xrd-refinement", 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.
mat-xrd-refinementPerform Rietveld refinement from experimental XRD patterns using DARA (BGMN).
Mat Xrd Refinement is an agent skill from learningmatter-mit/AtomisticSkills. Perform Rietveld refinement from experimental XRD patterns using DARA (BGMN).
Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 33 other files, including scripts (for example `examples/CaNi(PO3)4_800_240_Ca(OH)2_(NH4)2HPO4_NiO/README.md`, `examples/CaNi(PO3)4_800_240_Ca(OH)2_(NH4)2HPO4_NiO/refinement_results/CaNi(PO3)4_800_240_Ca(OH)2_(NH4)2HPO4_NiO/refinement_result.json` and `examples/LiFePO4/LiFePO4_xrd.json`).
The repository describes itself as: Integrating AtomisticSkills into Agentic IDEs (Cursor, Claude Code, Codex, Google Antigravity, Hermes Agent, etc). The licence is MIT.
2 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit 7f2d86d. It shows what the files ask for, not the result of running them.
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.
Ships 1 file in scripts/, which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Links to these hosts (documentation or services it may open):
cedergrouphub.github.iogithub.comFrom URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Mat Xrd Refinement loads about 1.8k tokens when it runs. Until then it costs about 24 tokens; SKILL.md has 659 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.
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.
The full file from learningmatter-mit/AtomisticSkills at commit 7f2d86d, republished under its MIT licence (© learningmatter-mit). 659 words, ~1,824 tokens.
.claude/skills/mat-xrd-refinement/SKILL.md (or your agent's skills folder). This skill also uses 26 other files; get the full folder from GitHub.Perform quantitative Rietveld refinement of powder X-ray diffraction (XRD) patterns using DARA (Data-driven Automated Rietveld Analysis) with BGMN. Use when you have an experimental (or theoretical) pattern in .xy format and candidate phase CIFs.
cpu (it includes dara-xrd and pymatgen; venv/run creates it on first use).kaleido, which needs Chrome or Chromium (on x86_64, plotly_get_chrome installs one).--bgmn_dir or DARA_BGMN_DIR to a local BGMN directory.| Script | Purpose |
|---|---|
scripts/refine.py | Run Rietveld refinement with known phases; writes plots and summary under refinement_results/. |
scripts/convert_xrd_to_xy.py | Convert XRD from JSON (xrd-spectrum) or DIF to .xy for DARA. |
scripts/dara_utils.py | Helpers (e.g. load_xrd_file); used by other scripts. |
.xy format)Two columns (2θ and intensity), space-separated. Options:
convert_xrd_to_xy.py with --input_file your_xrd.json. Output is written next to the input as your_xrd.xy.convert_xrd_to_xy.py with --input_file your_data.txt (or .dif). Format is auto-detected if the file contains a header with 2-THETA and INTENSITY.# From JSON (e.g. xrd-spectrum output)
${CLAUDE_SKILL_DIR}/../../venv/run cpu python ${CLAUDE_SKILL_DIR}/scripts/convert_xrd_to_xy.py --input_file path/to/xrd.json
# From DIF
${CLAUDE_SKILL_DIR}/../../venv/run cpu python ${CLAUDE_SKILL_DIR}/scripts/convert_xrd_to_xy.py --input_file path/to/scan.txtConvert arguments:
--input_file: Path to JSON or DIF file.--format: auto (default), json, or dif to force format.refine.py)Refinement uses DARA’s do_refinement_no_saving (no BGMN working files left on disk). Output is written to refinement_results/ under the same directory as the XRD file (no --output_dir argument).
Refine arguments:
--xrd_data: (Required.) Path to the .xy pattern. Quote the path in the shell if it contains parentheses or spaces, e.g. --xrd_data "./path/with(Chem).xy".--cifs: (Optional.) List of CIF paths. If omitted, CIFs are auto-discovered: first from a cifs/ subfolder next to the XRD file, then from the XRD directory. Example layout: examples/LiFePO4/LiFePO4_xrd.xy and examples/LiFePO4/cifs/LiFePO4.cif, Li3PO4.cif.--instrument_profile: Default Aeris-fds-Pixcel1d-Medipix3.--phase_params: Path to a JSON file with phase refinement parameters (e.g. lattice_range, b1, k1, gewicht). See DARA tutorial.--refinement_params: Path to JSON for refinement options (e.g. wmin, wmax).--bgmn_dir: Local BGMN directory (avoids download). Or set DARA_BGMN_DIR.--quiet: Suppress progress output.Normalized intensity: If the pattern’s maximum intensity is < 10, the script scales intensities to ~1000 before refinement so Rwp is comparable to the DARA tutorial; the applied scale is printed and stored in refinement_result.json as intensity_scale_applied.
refine.py)All under <xrd_directory>/refinement_results/<stem>/ (e.g. refinement_results/LiFePO4/):
| File | Description |
|---|---|
refinement_result.json | Rwp, instrument_profile, phase_params, refinement_params, phases (lattice, gewicht), paths to plots and peak_data, optional intensity_scale_applied. |
<stem>_refinement.html | Interactive Plotly refinement plot (observed, calculated, difference). |
<stem>_refinement.png | Static plot (requires kaleido). |
<stem>_peak_data.csv | Simulated peaks (2θ, intensity, h, k, l, phase, etc.). |
No BGMN working files (.str, .par, .lst, etc.) are saved; DARA runs in a temporary directory.
cifs/ subfolder)Layout: examples/LiFePO4/LiFePO4_xrd.xy and examples/LiFePO4/cifs/LiFePO4.cif, Li3PO4.cif. No --cifs needed.
${CLAUDE_SKILL_DIR}/../../venv/run cpu python ${CLAUDE_SKILL_DIR}/scripts/refine.py \
--xrd_data ${CLAUDE_SKILL_DIR}/examples/LiFePO4/LiFePO4_xrd.xyResults: examples/LiFePO4/refinement_results/LiFePO4/ (refinement_result.json, HTML/PNG, peak_data CSV).
# Quote the path because of (PO3), (OH), (NH4).
${CLAUDE_SKILL_DIR}/../../venv/run cpu python ${CLAUDE_SKILL_DIR}/scripts/refine.py \
--xrd_data "${CLAUDE_SKILL_DIR}/examples/CaNi(PO3)4_800_240_Ca(OH)2_(NH4)2HPO4_NiO/CaNi(PO3)4_800_240_Ca(OH)2_(NH4)2HPO4_NiO.xy"CIFs are taken from examples/CaNi(PO3)4_.../cifs/ (NiO_225_sym.cif, CaNi(PO3)4_15_sym.cif). Results under that example’s refinement_results/.
${CLAUDE_SKILL_DIR}/../../venv/run cpu python ${CLAUDE_SKILL_DIR}/scripts/refine.py \
--xrd_data pattern.xy \
--cifs phase1.cif phase2.cif \
--phase_params phase_params.json \
--refinement_params refinement_params.jsonplot.py)If you want to adjust the visualization (e.g. dimensions, font sizes, legend position) without re-running the heavy DARA refinement process, you can use the standalone plot.py script. This script reads the *_curve_data.csv exported by refine.py.
${CLAUDE_SKILL_DIR}/../../venv/run cpu python ${CLAUDE_SKILL_DIR}/scripts/plot.py \
--data_dir refinement_results/my_pattern \
--output refinement_results/my_pattern/reformatted_plotYou can independently edit plot.py directly to adjust any of the matplotlib/plotly formatting rules.
--bgmn_dir / DARA_BGMN_DIR on restricted networks.( ) or spaces.--phase_params (e.g. lattice_range, b1, k1, gewicht) per the DARA tutorial.Aeris-fds-Pixcel1d-Medipix3; change with --instrument_profile if needed for your diffractometer.mat-xrd-digitizer:.xy file if you do not have raw experimental data.Author: Nofit Segal Contact: GitHub @nofitsegal
© 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
SKILL.md and 26 other files (scripts) in skills/mat-xrd-refinement of learningmatter-mit/AtomisticSkills.
Open the folder on GitHubat commit 7f2d86d
Mat Xrd Refinement 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 Xrd Refinement this skilllearningmatter-mit/AtomisticSkills | 175 | — | ~1.8k | Automated safety check: Pass | MIT | |
| React Performanceaffaan-m/ECC | 274k | 1 repos | ~4.5k | Automated safety check: Pass | MIT | |
| Performance Profileralirezarezvani/claude-skills | 28k | — | ~684 | Automated safety check: Pass | MIT | |
| Agent Performance Optimizerruvnet/ruflo | 74k | 2 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Handsontable Performance Testinghandsontable/handsontable | 22k | — | ~3.4k | Automated safety check: Pass | Custom licence | |
| Performance Managementsickn33/agentic-awesome-skills | 47k | 1 repos | ~4.1k | Automated safety check: Pass | MIT |
affaan-m/ECC
React and Next.js performance optimization patterns adapted from Vercel Engineering's React Best Practices (https://github.com/vercel-labs/agent-skills).
alirezarezvani/claude-skills
Systematic performance profiling for Node.js, Python, and Go applications.
ruvnet/ruflo
Agent skill for performance-optimizer - invoke with $agent-performance-optimizer
handsontable/handsontable
Guide to Handsontable's performance-tests package: Playwright scenarios measured through CDP traces and compared against golden baselines taken from the develop branch.
sickn33/agentic-awesome-skills
Performance review register: review type, period, employee and reviewer, KPI, OKR and behaviour scores, overall rating, PIP and promotion flags, development plan.
udecode/plate
Review performance lanes with GitHub-scale tactics not owned by Vercel React rules: cohort segmentation, repeated-unit budgets, interaction-level INP, memory tagging, degradation contracts, browser…
learningmatter-mit/AtomisticSkills
Define a docking search box (center coordinates + box dimensions in Angstroms) from a co-crystal ligand, binding-site residues, or a saved JSON specification.
learningmatter-mit/AtomisticSkills
Build a solvated, charge-neutralized protein-ligand complex for OpenMM molecular dynamics simulation.
learningmatter-mit/AtomisticSkills
Identify and rank ligandable pockets on a protein structure or model using geometry (fpocket) or an ML predictor (P2Rank).
learningmatter-mit/AtomisticSkills
Calculate homolytic and heterolytic bond dissociation energies (BDEs) for all single bonds in a molecule using MLIPs with RDKit fragmentation.
learningmatter-mit/AtomisticSkills
Generate molecular conformers with RDKit ETKDG, relax with MLIPs, and rank by energy with Boltzmann weighting.
learningmatter-mit/AtomisticSkills
Query multiple MOF databases (QMOF via MPContribs; ARC-MOF DB7/Majumdar et al.
Perform Rietveld refinement from experimental XRD patterns using DARA (BGMN). Mat Xrd Refinement is an agent skill from learningmatter-mit/AtomisticSkills. Perform Rietveld refinement from experimental XRD patterns using DARA (BGMN).
Run `npx skills add learningmatter-mit/AtomisticSkills --skill mat-xrd-refinement -a claude-code`. Or copy the skill folder (skills/mat-xrd-refinement in learningmatter-mit/AtomisticSkills) into .claude/skills/mat-xrd-refinement in your project. Claude Code loads it when a task matches its description.
Run `npx skills add learningmatter-mit/AtomisticSkills --skill mat-xrd-refinement -a codex`. Or copy the skill folder (skills/mat-xrd-refinement in learningmatter-mit/AtomisticSkills) into .agents/skills/mat-xrd-refinement in your project. Codex loads it when a task matches its description.
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-xrd-refinement -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-xrd-refinement, .gemini/skills/mat-xrd-refinement, .github/skills/mat-xrd-refinement and .opencode/skills/mat-xrd-refinement in your project.
SKILL.md names no scripts, command-line tools or credentials: Mat Xrd Refinement is instructions for the agent only. Our summary lists: Python 3.
SKILL.md names 2 domains. As links in the text: cedergrouphub.github.io and github.com. This is read from the text; nothing was executed.
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.
Mat Xrd Refinement is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.8k tokens (SKILL.md is roughly 7.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Mat Xrd Refinement: React Performance (affaan-m/ECC, 274k stars), Performance Profiler (alirezarezvani/claude-skills, 28k stars), Agent Performance Optimizer (ruvnet/ruflo, 74k stars) and Handsontable Performance Testing (handsontable/handsontable, 22k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
learningmatter-mit (a GitHub organization) maintains it in learningmatter-mit/AtomisticSkills, which has 175 GitHub stars. The repository holds 129 skills in this directory. The repository was last updated on October 6, 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.