Fizz Convert
pashov/skills
Convert English-language properties in PROPERTIES.md (produced by the Fizz skill) into Solidity assertions inside the existing fuzz harness, then flip their checkboxes.
Use at the start of any task in a Scalus project, to choose the Scalus skill for smart contract work.
Install Using Scalus
$ npx skills add scalus3/scalus --skill using-scalus -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install scalus3/scalus using-scalus --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/scalus3/scalus.git skills-src && mkdir -p .claude/skills && cp -r skills-src/scalus-skills/skills/using-scalus .claude/skills/using-scalus && 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 "using-scalus" agent skill from https://github.com/scalus3/scalus/tree/master/scalus-skills/skills/using-scalus into .claude/skills/using-scalus/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "using-scalus", 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/scalus3/scalus/tree/master/scalus-skills/skills/using-scalusType 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 scalus3/scalus --skill using-scalus -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install scalus3/scalus using-scalus --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/scalus3/scalus.git skills-src && mkdir -p .agents/skills && cp -r skills-src/scalus-skills/skills/using-scalus .agents/skills/using-scalus && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "using-scalus" agent skill from https://github.com/scalus3/scalus/tree/master/scalus-skills/skills/using-scalus into .agents/skills/using-scalus/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "using-scalus", 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 scalus3/scalus --skill using-scalus -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install scalus3/scalus using-scalus --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/scalus3/scalus.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/scalus-skills/skills/using-scalus .cursor/skills/using-scalus && 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 "using-scalus" agent skill from https://github.com/scalus3/scalus/tree/master/scalus-skills/skills/using-scalus into .cursor/skills/using-scalus/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "using-scalus", 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/scalus3/scalus.git --path scalus-skills/skills/using-scalus--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 scalus3/scalus --skill using-scalus -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install scalus3/scalus using-scalus --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/scalus3/scalus.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/scalus-skills/skills/using-scalus .gemini/skills/using-scalus && 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 "using-scalus" agent skill from https://github.com/scalus3/scalus/tree/master/scalus-skills/skills/using-scalus into .gemini/skills/using-scalus/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "using-scalus", 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 scalus3/scalus using-scalusInstalls 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 scalus3/scalus --skill using-scalus -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/scalus3/scalus.git skills-src && mkdir -p .github/skills && cp -r skills-src/scalus-skills/skills/using-scalus .github/skills/using-scalus && 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 "using-scalus" agent skill from https://github.com/scalus3/scalus/tree/master/scalus-skills/skills/using-scalus into .github/skills/using-scalus/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "using-scalus", 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 scalus3/scalus --skill using-scalus -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install scalus3/scalus using-scalus --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/scalus3/scalus.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/scalus-skills/skills/using-scalus .opencode/skills/using-scalus && 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 "using-scalus" agent skill from https://github.com/scalus3/scalus/tree/master/scalus-skills/skills/using-scalus into .opencode/skills/using-scalus/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "using-scalus", 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
using-scalus- GitHub stars
- 105
- Token cost
- ~321 tokens
- SKILL.md length
- 150 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Use at the start of any task in a Scalus project, to choose the Scalus skill for smart contract work.
- Tasks that involve Smart contracts
- SKILL.md covers Routing table and Rule
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Using Scalus is an agent skill from scalus3/scalus. Use at the start of any task in a Scalus project, to choose the Scalus skill for smart contract work.
Its SKILL.md is about 320 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 Backend & APIs, covering Smart contracts. The repository describes itself as: Scalus - Smart contracts & dApps Development Platform for Cardano. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Smart contracts
Example prompts
- “/using-scalus”
What it can do on your machine
Read from SKILL.md and the folder at commit f830a36. 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
No scripts in the folder and no shell commands in SKILL.md.
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
Using Scalus loads about 321 tokens when it runs. Until then it costs about 29 tokens; SKILL.md has 150 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
The full file from scalus3/scalus at commit f830a36, republished under its Apache-2.0 licence (© scalus3). 150 words, ~321 tokens.
Download SKILL.mdSave it as
.claude/skills/using-scalus/SKILL.md (or your agent's skills folder).- name
- using-scalus
- description
- Use at the start of any task in a Scalus project, to choose the Scalus skill for smart contract work.
Using the Scalus skills
This project uses Scalus: Cardano smart contracts written in Scala 3 and compiled to
Plutus Core. The scalus plugin has one skill per contract task. Load it with the
Skill tool.
Routing table
| Task | Skill |
|---|---|
Write or change on-chain code (@Compile, extends Validator, DataParameterizedValidator) | scalus:contract |
| Write or change a test of on-chain code | scalus:contract-test |
| Build transactions, use the Emulator or TxBuilder | scalus:local-development |
| Reduce execution units or script size | scalus:optimize-contract |
| Review on-chain code before you call it done | scalus:smart-contract-security-review |
Rule
Invoke the matching skill before the first line of on-chain code, and before the first line of its test.
The rule also applies inside a process skill (brainstorming, planning, TDD, debugging).
The process skill decides the steps. The scalus: skill decides the code. A process
skill that says "invoke no other skill" does not cancel this rule.
Before you call on-chain work done, run scalus:smart-contract-security-review on it.
© scalus3, 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
Just SKILL.md in scalus-skills/skills/using-scalus of scalus3/scalus.
Open the folder on GitHubat commit f830a36
Compare with similar skills
Using Scalus 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 |
|---|---|---|---|---|---|---|
| Using Scalus this skillscalus3/scalus | 105 | — | ~321 | Automated safety check: Pass | Apache-2.0 | |
| Fizz Convertpashov/skills | 1.2k | 2 repos | ~3.7k | Automated safety check: Pass | MIT | |
| Solana Devsolana-foundation/solana-dev-skill | 573 | — | ~3.8k | Automated safety check: Pass | MIT | |
| Feynman Auditor0xiehnnkta/nemesis-auditor | 243 | 1 repos | ~11k | Automated safety check: Pass | MIT | |
| Smart Contract Auditgreatpie/smart-contract-audit-skill | 101 | — | ~1.1k | Automated safety check: Pass | None | |
| RadarAuditware/radar | 154 | — | ~2.1k | Automated safety check: Pass | GPL-3.0 |
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Related
Categories
Questions about Using Scalus
What does Using Scalus do?
Use at the start of any task in a Scalus project, to choose the Scalus skill for smart contract work. Using Scalus is an agent skill from scalus3/scalus. Use at the start of any task in a Scalus project, to choose the Scalus skill for smart contract work.
When should I use Using Scalus?
Using Scalus fits situations like: tasks that involve Smart contracts.
How do I install Using Scalus in Claude Code?
Run `npx skills add scalus3/scalus --skill using-scalus -a claude-code`. Or copy the skill folder (scalus-skills/skills/using-scalus in scalus3/scalus) into .claude/skills/using-scalus in your project. Claude Code loads it when a task matches its description.
How do I install Using Scalus in Codex?
Run `npx skills add scalus3/scalus --skill using-scalus -a codex`. Or copy the skill folder (scalus-skills/skills/using-scalus in scalus3/scalus) into .agents/skills/using-scalus in your project. Codex loads it when a task matches its description.
Can I use Using Scalus 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 scalus3/scalus --skill using-scalus -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/using-scalus, .gemini/skills/using-scalus, .github/skills/using-scalus and .opencode/skills/using-scalus in your project.
What does Using Scalus need to run?
SKILL.md names no scripts, command-line tools or credentials: Using Scalus is instructions for the agent only.
Does Using Scalus 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 Using Scalus 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 Using Scalus use?
Using Scalus 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 Using Scalus use?
About 321 tokens (SKILL.md is roughly 1.3k 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 Using Scalus?
Skills that share tags, products or a category with Using Scalus: Fizz Convert (pashov/skills, 1.2k stars), Solana Dev (solana-foundation/solana-dev-skill, 573 stars), Feynman Auditor (0xiehnnkta/nemesis-auditor, 243 stars) and Smart Contract Audit (greatpie/smart-contract-audit-skill, 101 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Using Scalus?
scalus3 (a GitHub organization) maintains it in scalus3/scalus, which has 105 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 9, 2026.
Source: scalus3/scalus on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.