Paddle Build
PaddlePaddle/Paddle
A skill your agent uses when needing to compile, rebuild, or install Paddle from source after code changes.
Scaffold new Celeritas source and test files with the required copyright header and register them in CMake.
Install New Class
$ npx skills add celeritas-project/celeritas --skill new-class -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install celeritas-project/celeritas new-class --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/celeritas-project/celeritas.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/new-class .claude/skills/new-class && 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 "new-class" agent skill from https://github.com/celeritas-project/celeritas/tree/develop/.claude/skills/new-class into .claude/skills/new-class/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "new-class", 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/celeritas-project/celeritas/tree/develop/.claude/skills/new-classType 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 celeritas-project/celeritas --skill new-class -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install celeritas-project/celeritas new-class --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/celeritas-project/celeritas.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/new-class .agents/skills/new-class && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "new-class" agent skill from https://github.com/celeritas-project/celeritas/tree/develop/.claude/skills/new-class into .agents/skills/new-class/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "new-class", 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 celeritas-project/celeritas --skill new-class -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install celeritas-project/celeritas new-class --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/celeritas-project/celeritas.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/new-class .cursor/skills/new-class && 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 "new-class" agent skill from https://github.com/celeritas-project/celeritas/tree/develop/.claude/skills/new-class into .cursor/skills/new-class/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "new-class", 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/celeritas-project/celeritas.git --path .claude/skills/new-class--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 celeritas-project/celeritas --skill new-class -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install celeritas-project/celeritas new-class --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/celeritas-project/celeritas.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/new-class .gemini/skills/new-class && 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 "new-class" agent skill from https://github.com/celeritas-project/celeritas/tree/develop/.claude/skills/new-class into .gemini/skills/new-class/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "new-class", 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 celeritas-project/celeritas new-classInstalls 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 celeritas-project/celeritas --skill new-class -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/celeritas-project/celeritas.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/new-class .github/skills/new-class && 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 "new-class" agent skill from https://github.com/celeritas-project/celeritas/tree/develop/.claude/skills/new-class into .github/skills/new-class/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "new-class", 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 celeritas-project/celeritas --skill new-class -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install celeritas-project/celeritas new-class --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/celeritas-project/celeritas.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/new-class .opencode/skills/new-class && 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 "new-class" agent skill from https://github.com/celeritas-project/celeritas/tree/develop/.claude/skills/new-class into .opencode/skills/new-class/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "new-class", 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
new-class- GitHub stars
- 105
- Token cost
- ~496 tokens
- SKILL.md length
- 183 words
- Files
- 1
- Skills in repo
- 3
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Scaffold new Celeritas source and test files with the required copyright header and register them in CMake.
- Works in 3 steps: Generate stubs → Register in CMake → Fill in
- Creating any new .hh/.cc/.cu/.test.cc file
- SKILL.md covers 1. Generate stubs, 2. Register in CMake and 3. Fill in
- Calls python3
What it does
New Class is an agent skill from celeritas-project/celeritas. Scaffold new Celeritas source and test files with the required copyright header and register them in CMake. Use when creating any new .hh/.cc/.cu/.test.cc file.
Its SKILL.md is about 500 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in AI & LLM Engineering. It works with C++ and CUDA. The repository describes itself as: Celeritas is a new Monte Carlo transport code designed to accelerate scientific discovery in high energy physics by improving detector simulation throughput and energy efficiency…
When your agent uses it
- Creating any new .hh/.cc/.cu/.test.cc file
Example prompts
- “/new-class”
Requirements
- Python 3
Workflow steps
3 steps, taken from the step headings in SKILL.md.
- Generate stubs
- Register in CMake
- Fill in
What it can do on your machine
Read from SKILL.md and the folder at commit f093ae2. 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
Shell commands in SKILL.md call:
python3
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
New Class loads about 496 tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 183 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); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 183 words (~496 tokens).
“Create new files with scripts/dev/celeritas-gen.py; never hand-write the copyright header. $ARGUMENTS names the class/files (e.g. src/celeritas/em/model/FooModel).”
- name
- new-class
Files
Just SKILL.md in .claude/skills/new-class of celeritas-project/celeritas.
Open the folder on GitHubat commit f093ae2
Compare with similar skills
New Class 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 |
|---|---|---|---|---|---|---|
| New Class this skillceleritas-project/celeritas | 105 | — | ~496 | Automated safety check: Pass | Custom licence | |
| Paddle BuildPaddlePaddle/Paddle | 24k | — | ~1k | Automated safety check: Pass | Apache-2.0 | |
| Fastllm Triton Opsztxz16/fastllm | 5.1k | — | ~1.8k | Automated safety check: Pass | Apache-2.0 | |
| Ako4allTongmingLAIC/AKO4ALL | 369 | — | ~4k | Automated safety check: Pass | MIT | |
| Cuda Cpp Kernelvipshop/cache-dit | 1.3k | — | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| Paddle Op DevPaddlePaddle/Paddle | 24k | — | ~1.3k | Automated safety check: Pass | Apache-2.0 |
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More from celeritas-project/celeritas
Test Change
celeritas-project/celeritas
Build and run the unit tests covering changed Celeritas source files.
Debug Test
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Update .vscode/launch.json to debug a specific CTest test by name.
Related
Categories
Questions about New Class
What does New Class do?
Scaffold new Celeritas source and test files with the required copyright header and register them in CMake. New Class is an agent skill from celeritas-project/celeritas. Scaffold new Celeritas source and test files with the required copyright header and register them in CMake.
When should I use New Class?
New Class fits situations like: creating any new .hh/.cc/.cu/.test.cc file.
How do I install New Class in Claude Code?
Run `npx skills add celeritas-project/celeritas --skill new-class -a claude-code`. Or copy the skill folder (.claude/skills/new-class in celeritas-project/celeritas) into .claude/skills/new-class in your project. Claude Code loads it when a task matches its description.
How do I install New Class in Codex?
Run `npx skills add celeritas-project/celeritas --skill new-class -a codex`. Or copy the skill folder (.claude/skills/new-class in celeritas-project/celeritas) into .agents/skills/new-class in your project. Codex loads it when a task matches its description.
Can I use New Class 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 celeritas-project/celeritas --skill new-class -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/new-class, .gemini/skills/new-class, .github/skills/new-class and .opencode/skills/new-class in your project.
What does New Class need to run?
Going by SKILL.md and its folder, New Class needs the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does New Class access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is New Class 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. Review the folder before installing.
What licence does New Class use?
New Class has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does New Class use?
About 496 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 New Class?
Skills that share tags, products or a category with New Class: Paddle Build (PaddlePaddle/Paddle, 24k stars), Fastllm Triton Ops (ztxz16/fastllm, 5.1k stars), Ako4all (TongmingLAIC/AKO4ALL, 369 stars) and Cuda Cpp Kernel (vipshop/cache-dit, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains New Class?
celeritas-project (a GitHub organization) maintains it in celeritas-project/celeritas, which has 105 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on October 7, 2026.
Source: celeritas-project/celeritas on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.