Agent skill

Tephra

把一张图重画成黑底像素画，两种正典画法按题材二选一：纯粒子（会动的短笔触沿图像自身的结构方向流动，适合浪／烟／光柱这类本来就在流动的东西），或网点实体（把明暗翻译成逐帧静止的有序点阵，适合人像／雕塑／动物这类要读出轮廓和体积的东西，并且只有它能把形体梳成硬边碎裂条）。动效按画面的物理规律分区规划；可选地让一部分形体溃散成飞灰，同时锚定另一部分保持实体与原色。输出静态 PNG 与无缝循环…

PolyForm-Noncommercial-1.0.0Auto-check passedMedia & Creative

Install Tephra

skills CLI

$ npx skills add haorantang97/LabArt --skill tephra -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install haorantang97/LabArt tephra --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/haorantang97/LabArt.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/tephra/skills/tephra .claude/skills/tephra && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "tephra" agent skill from https://github.com/haorantang97/LabArt/tree/main/plugins/tephra/skills/tephra into .claude/skills/tephra/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tephra", 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

$skill-installer install https://github.com/haorantang97/LabArt/tree/main/plugins/tephra/skills/tephra

Type 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.

skills CLI

$ npx skills add haorantang97/LabArt --skill tephra -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install haorantang97/LabArt tephra --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/haorantang97/LabArt.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/tephra/skills/tephra .agents/skills/tephra && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "tephra" agent skill from https://github.com/haorantang97/LabArt/tree/main/plugins/tephra/skills/tephra into .agents/skills/tephra/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tephra", 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.

skills CLI

$ npx skills add haorantang97/LabArt --skill tephra -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install haorantang97/LabArt tephra --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/haorantang97/LabArt.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/tephra/skills/tephra .cursor/skills/tephra && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "tephra" agent skill from https://github.com/haorantang97/LabArt/tree/main/plugins/tephra/skills/tephra into .cursor/skills/tephra/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tephra", 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

$ gemini skills install https://github.com/haorantang97/LabArt.git --path plugins/tephra/skills/tephra

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add haorantang97/LabArt --skill tephra -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install haorantang97/LabArt tephra --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/haorantang97/LabArt.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/tephra/skills/tephra .gemini/skills/tephra && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "tephra" agent skill from https://github.com/haorantang97/LabArt/tree/main/plugins/tephra/skills/tephra into .gemini/skills/tephra/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tephra", 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.

GitHub CLI

$ gh skill install haorantang97/LabArt tephra

Installs 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).

skills CLI

$ npx skills add haorantang97/LabArt --skill tephra -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/haorantang97/LabArt.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/tephra/skills/tephra .github/skills/tephra && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "tephra" agent skill from https://github.com/haorantang97/LabArt/tree/main/plugins/tephra/skills/tephra into .github/skills/tephra/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tephra", 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.

skills CLI

$ npx skills add haorantang97/LabArt --skill tephra -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install haorantang97/LabArt tephra --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/haorantang97/LabArt.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/tephra/skills/tephra .opencode/skills/tephra && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "tephra" agent skill from https://github.com/haorantang97/LabArt/tree/main/plugins/tephra/skills/tephra into .opencode/skills/tephra/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tephra", 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: tephra
GitHub stars: 286
Token cost: ~2.9k tokens
SKILL.md length: 854 words
Files: 15 (incl. scripts, references)
Skills in repo: 3
Repo updated: Sep 26, 2026
First seen: Oct 9, 2026
Licence: PolyForm-Noncommercial-1.0.0

At a glance

Works in 7 steps: 叠网格在源图上叠 0.1… → 体检 python3 scripts/dp_fitness.py 图.png… → 前处理见下「M0.5」。改的是明暗，不是几何。 → …
Media & Creative work in your project
SKILL.md covers 先读：工作流（七步，不要跳）, 两种正典画法（先选一种，再往下调）, 模块（一个模块只负责一件事） and 调参纪律, plus 2 more sections
Runs Python scripts from its folder; calls python3

What it does

Tephra is an agent skill from haorantang97/LabArt. 把一张图重画成黑底像素画，两种正典画法按题材二选一：纯粒子（会动的短笔触沿图像自身的结构方向流动，适合浪／烟／光柱这类本来就在流动的东西），或网点实体（把明暗翻译成逐帧静止的有序点阵，适合人像／雕塑／动物这类要读出轮廓和体积的东西，并且只有它能把形体梳成硬边碎裂条）。动效按画面的物理规律分区规划；可选地让一部分形体溃散成飞灰，同时锚定另一部分保持实体与原色。输出静态 PNG 与无缝循环 GIF/MP4。触发：/tephra、「粒子流动效果」「把这张图重绘成笔触」「黑底像素画」「网点碎裂」。算法与代码全部原创，输出不基于任何模型，也不复制任何具体作品。

Its SKILL.md is about 2.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 17 other files, including scripts and reference files (for example `agents/openai.yaml`, `references/modules.md` and `references/proposals-density.md`).

It sits in Media & Creative. The repository describes itself as: A Codex marketplace of original visual and artistic creation skills.

When your agent uses it

Media & Creative work in your project

Example prompts

“/tephra”

Requirements

Python 3

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

叠网格在源图上叠 0.1 间距的归一化网格，所有坐标参数（漩涡中心／分区／锚定）从图上读出来，不要估。
体检 python3 scripts/dp_fitness.py 图.png [--invert]。不过就别硬渲，回第 3 步。
前处理见下「M0.5」。改的是明暗，不是几何。
列元素 → 逐个判物理画面里有哪几样东西，每样在物理上往哪走。见「M3 物理对照表」。
写成分区一个元素一条 --flow-region；天然同心的结构才用 --swirl。
渲
验相位互相关逐区量位移，与第 4 步的判断核对。方向靠眼睛看会错。

What it can do on your machine

Read from SKILL.md and the folder at commit 2dde868. 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 8 files in scripts/ (Python), which the agent can run.
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

Tephra loads about 2.9k tokens when it runs, and up to ~33k if it reads all its reference files. Until then it costs about 75 tokens; SKILL.md has 854 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~75
When it runs · the whole SKILL.md, loaded when a task matches: ~2.9k
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~33k

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

Its licence (PolyForm-Noncommercial-1.0.0) doesn't allow us to republish the file, so here is its outline and opening line. It has 854 words (~2,911 tokens).

name: tephra
license: PolyForm-Noncommercial-1.0.0

Outline of SKILL.md

Tephra v8
先读：工作流（七步，不要跳）
两种正典画法（先选一种，再往下调）
A · 纯粒子——裸跑即正典
B · 网点实体——必须走原生网格
共用的加料（两条路都适用）
模块（一个模块只负责一件事）
M0 输入判定
M0.5 前处理（只改明暗，不改几何）
M1 形体
M2 笔触质感
M3 流动（三层，各自独立、都可局部化，权重最强者赢）
M4 溃散（可选，非每图必用）
M5 空域层（与 M1–M4 无关的独立层）
M6 输出
调参纪律
常见失败
边界与伦理

Read the full SKILL.md on GitHub

Files

SKILL.md and 14 other files (scripts, references) in plugins/tephra/skills/tephra of haorantang97/LabArt.

SKILL.md
agents/openai.yaml
references/modules.md
references/proposals-density.md
references/proposals-edge.md
references/proposals-rain.md
references/worked-example.md
scripts/dp_fitness.py
scripts/m4_check.py
scripts/m4_erode.py
scripts/native_check.py
scripts/p4_mask.py
scripts/strand_check.py
scripts/tephra.py
scripts/upscale_nearest.py

Open the folder on GitHubat commit 2dde868

Compare with similar skills

Tephra 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.

Tephra compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Tephra this skillhaorantang97/LabArt	286	—	~2.9k	Automated safety check: Pass	PolyForm-Noncommercial-1.0.0	15 days ago
Guizang Social Cardsop7418/guizang-social-card-skill	7.4k	1 repos	~7.8k	Automated safety check: Pass	AGPL-3.0	3 mo ago
Weekly Changelog Videoheygen-com/hyperframes	60k	—	~3.3k	Automated safety check: Pass	Apache-2.0	today
Anthropic Brand Stylinganthropics/skills	180k	30 repos	~559	Automated safety check: Pass	Apache-2.0	yesterday
MoneyPrinterTurbo Video Generatorharry0703/MoneyPrinterTurbo	130k	—	~2.1k	Automated safety check: Warn	MIT	yesterday
HyperFrames Media Useheygen-com/hyperframes	60k	—	~2.4k	Automated safety check: Pass	Apache-2.0	today

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Questions about Tephra

What does Tephra do?

When should I use Tephra?

Tephra fits situations like: media & Creative work in your project.

How do I install Tephra in Claude Code?

Run `npx skills add haorantang97/LabArt --skill tephra -a claude-code`. Or copy the skill folder (plugins/tephra/skills/tephra in haorantang97/LabArt) into .claude/skills/tephra in your project. Claude Code loads it when a task matches its description.

How do I install Tephra in Codex?

Run `npx skills add haorantang97/LabArt --skill tephra -a codex`. Or copy the skill folder (plugins/tephra/skills/tephra in haorantang97/LabArt) into .agents/skills/tephra in your project. Codex loads it when a task matches its description.

Can I use Tephra 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 haorantang97/LabArt --skill tephra -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/tephra, .gemini/skills/tephra, .github/skills/tephra and .opencode/skills/tephra in your project.

What does Tephra need to run?

Going by SKILL.md and its folder, Tephra needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.

Does Tephra 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 Tephra 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 Tephra use?

Tephra is published under the PolyForm-Noncommercial-1.0.0 licence (declared in SKILL.md).

How many tokens does Tephra use?

About 2.9k tokens (SKILL.md is roughly 12k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 30k tokens, read only when the agent opens those files.

What are the alternatives to Tephra?

Skills that share tags, products or a category with Tephra: Guizang Social Cards (op7418/guizang-social-card-skill, 7.4k stars), Weekly Changelog Video (heygen-com/hyperframes, 60k stars), Anthropic Brand Styling (anthropics/skills, 180k stars) and MoneyPrinterTurbo Video Generator (harry0703/MoneyPrinterTurbo, 130k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Tephra?

haorantang97 (a GitHub user) maintains it in haorantang97/LabArt, which has 286 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on September 26, 2026.

Source: haorantang97/LabArt on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Tephra

Install Tephra

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

Guizang Social Cards

Weekly Changelog Video

Anthropic Brand Styling

MoneyPrinterTurbo Video Generator

HyperFrames Media Use

Holo Card Studio

More from haorantang97/LabArt

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Questions about Tephra

Install Tephra

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

More from haorantang97/LabArt

Related

Questions about Tephra