Lint
ethereum/execution-specs
Run and fix the repository static analysis suite. An agent skill from ethereum/execution-specs.
“Auto-fix linting and formatting issues”
Install Fix
$ npx skills add leanEthereum/leanSpec --skill fix -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install leanEthereum/leanSpec fix --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/leanEthereum/leanSpec.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/fix .claude/skills/fix && 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 "fix" agent skill from https://github.com/leanEthereum/leanSpec/tree/main/.claude/skills/fix into .claude/skills/fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix", 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/leanEthereum/leanSpec/tree/main/.claude/skills/fixType 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 leanEthereum/leanSpec --skill fix -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install leanEthereum/leanSpec fix --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/leanEthereum/leanSpec.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/fix .agents/skills/fix && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "fix" agent skill from https://github.com/leanEthereum/leanSpec/tree/main/.claude/skills/fix into .agents/skills/fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix", 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 leanEthereum/leanSpec --skill fix -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install leanEthereum/leanSpec fix --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/leanEthereum/leanSpec.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/fix .cursor/skills/fix && 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 "fix" agent skill from https://github.com/leanEthereum/leanSpec/tree/main/.claude/skills/fix into .cursor/skills/fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix", 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/leanEthereum/leanSpec.git --path .claude/skills/fix--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 leanEthereum/leanSpec --skill fix -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install leanEthereum/leanSpec fix --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/leanEthereum/leanSpec.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/fix .gemini/skills/fix && 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 "fix" agent skill from https://github.com/leanEthereum/leanSpec/tree/main/.claude/skills/fix into .gemini/skills/fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix", 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 leanEthereum/leanSpec fixInstalls 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 leanEthereum/leanSpec --skill fix -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/leanEthereum/leanSpec.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/fix .github/skills/fix && 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 "fix" agent skill from https://github.com/leanEthereum/leanSpec/tree/main/.claude/skills/fix into .github/skills/fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix", 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 leanEthereum/leanSpec --skill fix -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install leanEthereum/leanSpec fix --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/leanEthereum/leanSpec.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/fix .opencode/skills/fix && 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 "fix" agent skill from https://github.com/leanEthereum/leanSpec/tree/main/.claude/skills/fix into .opencode/skills/fix/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fix", 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
fix- GitHub stars
- 143
- Token cost
- ~117 tokens
- SKILL.md length
- 52 words
- Files
- 1
- Skills in repo
- 9
- Repo updated
- First seen
- Licence
- MIT
At a glance
- Works in 3 steps: Import sorting (isort rules) → Code formatting (black-compatible) → Simple lint errors (auto-fixable)
- SKILL.md covers Command, What It Fixes and When to Use
- Calls just
About this skill
Fix is a skill in leanEthereum/leanSpec (143 stars). Its SKILL.md is about 117 tokens. Licence: MIT.
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Import sorting (isort rules)
- Code formatting (black-compatible)
- Simple lint errors (auto-fixable)
What it can do on your machine
Read from SKILL.md and the folder at commit 0b7d33e. 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:
just
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
Fix loads about 117 tokens when it runs. Until then it costs about 11 tokens; SKILL.md has 52 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 leanEthereum/leanSpec at commit 0b7d33e, republished under its MIT licence (© leanEthereum). 52 words, ~117 tokens.
Download SKILL.mdSave it as
.claude/skills/fix/SKILL.md (or your agent's skills folder).- name
- fix
- description
- Auto-fix linting and formatting issues
/fix - Auto-Fix Code Quality Issues
Automatically fix linting and formatting issues.
Command
just fixWhat It Fixes
- Import sorting (isort rules)
- Code formatting (black-compatible)
- Simple lint errors (auto-fixable)
When to Use
Run this after making code changes to automatically fix formatting issues.
Then run /checks to verify all issues are resolved.
© leanEthereum, MIT. 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 .claude/skills/fix of leanEthereum/leanSpec.
Open the folder on GitHubat commit 0b7d33e
Compare with similar skills
Fix 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 |
|---|---|---|---|---|---|---|
| Fix this skillleanEthereum/leanSpec | 143 | — | ~117 | Automated safety check: Pass | MIT | |
| Lintethereum/execution-specs | 1.2k | — | ~286 | Automated safety check: Pass | CC0-1.0 | |
| Install Anti-Slop Oxlint Rulesdmmulroy/anti-slop | 5.2k | — | ~2.2k | Automated safety check: Pass | MIT | |
| Babysit PR To Pass CIsgl-project/sglang | 37k | 2 repos | ~3k | Automated safety check: Pass | Apache-2.0 | |
| Rust Best Practicesfarm-fe/farm | 5.6k | 3 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Go Pedantrychromedp/chromedp | 13k | — | ~3.7k | Automated safety check: Pass | MIT |
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Run leanSpec fixtures against a client implementation. An agent skill from leanEthereum/leanSpec.
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Quick-reference checklist for code review conventions in leanSpec
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Show what changed in leanSpec between devnet versions or HEAD
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Doc
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Document code in this repository.
Related
Works with
Categories
Questions about Fix
How do I install Fix in Claude Code?
Run `npx skills add leanEthereum/leanSpec --skill fix -a claude-code`. Or copy the skill folder (.claude/skills/fix in leanEthereum/leanSpec) into .claude/skills/fix in your project. Claude Code loads it when a task matches its description.
How do I install Fix in Codex?
Run `npx skills add leanEthereum/leanSpec --skill fix -a codex`. Or copy the skill folder (.claude/skills/fix in leanEthereum/leanSpec) into .agents/skills/fix in your project. Codex loads it when a task matches its description.
Can I use Fix 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 leanEthereum/leanSpec --skill fix -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fix, .gemini/skills/fix, .github/skills/fix and .opencode/skills/fix in your project.
What does Fix need to run?
Going by SKILL.md and its folder, Fix needs the command-line tools its instructions call (just).
Does Fix 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 Fix 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 Fix use?
Fix is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Fix use?
About 117 tokens (SKILL.md is roughly 468 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 Fix?
Skills that share tags, products or a category with Fix: Lint (ethereum/execution-specs, 1.2k stars), Install Anti-Slop Oxlint Rules (dmmulroy/anti-slop, 5.2k stars), Babysit PR To Pass CI (sgl-project/sglang, 37k stars) and Rust Best Practices (farm-fe/farm, 5.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Fix?
leanEthereum (a GitHub organization) maintains it in leanEthereum/leanSpec, which has 143 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on September 2, 2026.
Source: leanEthereum/leanSpec on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.