Agent skill

Just

by disler in disler/bowser

Use just to save and run project-specific commands. An agent skill from disler/bowser.

No licenceAuto-check: notesProductivity & Automation

Install Just

skills CLI
$ npx skills add disler/bowser --skill just -a claude-code

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

GitHub CLI
$ gh skill install disler/bowser just --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/disler/bowser.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/just .claude/skills/just && 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/

Facts

Skill name
just
GitHub stars
265
Token cost
~792 tokens
SKILL.md length
274 words
Files
6
Skills in repo
3
Repo updated
First seen
Licence
None found

At a glance

Use just to save and run project-specific commands. An agent skill from disler/bowser.

  • Works in 3 steps: Create a justfile → Run Recipes → Advanced Features
  • The user mentions justfile
  • SKILL.md covers Instructions, Example Justfiles, Workflow and Examples
  • Calls just and brew

What it does

Just is an agent skill from disler/bowser. Use just to save and run project-specific commands. Use when the user mentions justfile, recipe, or needs a simple alternative to make for task automation.

Its SKILL.md is about 790 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files.

It sits in Productivity & Automation, covering Workflow automation. It works with Python. The repository describes itself as: Agentic browser automation and ui testing system — built with composable skills, subagent, command, and justfile layered architecture for repeatable, deployable browser use.

When your agent uses it

  • The user mentions justfile
  • Needs a simple alternative to make for task automation

Example prompts

  • “/just”

Requirements

  • Python 3
  • Node.js
  • Docker

Workflow steps

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

  1. Create a justfile
  2. Run Recipes
  3. Advanced Features

What it can do on your machine

Read from SKILL.md and the folder at commit 26541ac. 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
    • brew

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com

    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

Just loads about 792 tokens when it runs. Until then it costs about 42 tokens; SKILL.md has 274 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~42
When it runs · the whole SKILL.md, loaded when a task matches
~792

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:23
    - `set dotenv-load`: Automatically load `.env` files.
  • NoteMentions a .env fileSKILL.md:74
    nv-load` at the top of the file to load `.env`.

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 274 words (~792 tokens).

name
just

Read the full SKILL.md on GitHub

Files

SKILL.md and 5 other files in .claude/skills/just of disler/bowser.

  • SKILL.md
  • examples/bun-typescript.just
  • examples/multi-module.just
  • examples/node-docker.just
  • examples/python-venv.just
  • examples/uv-python.just

Open the folder on GitHubat commit 26541ac

Compare with similar skills

Just 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.

Just compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Just this skilldisler/bowser265—~792Automated safety check: NotesNone
Robocorp Automationrobocorp/robocorp653—~2.4kAutomated safety check: PassApache-2.0
Skyvern Browser AutomationSkyvern-AI/skyvern23k—~1.9kAutomated safety check: PassAGPL-3.0
Native Python in n8n Code Nodesczlonkowski/n8n-skills6.4k—~2.8kAutomated safety check: PassMIT
n8n Custom Code Tool Guideczlonkowski/n8n-skills6.4k—~4kAutomated safety check: PassMIT
UiPath Project Generatormarcelocruzrpa/uipath-ai-skills108—~6.9kAutomated safety check: PassMIT

Similar skills

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    653 GitHub stars~2.4k tokensUpdated yesterday
    Productivity & AutomationAuto-check passed
  • Skyvern Browser Automation

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    Automates websites with Skyvern's AI browser agent to fill forms, extract data, download files, log in and run multi-step workflows through SDKs, REST, MCP or a CLI.

    23k GitHub stars~1.9k tokensUpdated today
    Productivity & AutomationAuto-check passed
  • Native Python in n8n Code Nodes

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More from disler/bowser

  • Playwright Bowser

    disler/bowser

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    265 GitHub stars~1.1k tokensUpdated 7 mo ago
    Auto-check: notes
  • Claude Bowser

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    Observable browser automation using Chrome MCP tools. An agent skill from disler/bowser.

    265 GitHub stars~327 tokensUpdated 7 mo ago
    Auto-check: warnings

Works with

Questions about Just

What does Just do?

Use just to save and run project-specific commands. An agent skill from disler/bowser. Just is an agent skill from disler/bowser. Use just to save and run project-specific commands.

When should I use Just?

Just fits situations like: the user mentions justfile; needs a simple alternative to make for task automation.

How do I install Just in Claude Code?

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

How do I install Just in Codex?

Run `npx skills add disler/bowser --skill just -a codex`. Or copy the skill folder (.claude/skills/just in disler/bowser) into .agents/skills/just in your project. Codex loads it when a task matches its description.

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

What does Just need to run?

Going by SKILL.md and its folder, Just needs the command-line tools its instructions call (just and brew). Our summary lists: Python 3; Node.js; Docker.

Does Just access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Just safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Just use?

No licence was found for Just or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Just use?

About 792 tokens (SKILL.md is roughly 3.2k 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 Just?

Skills that share tags, products or a category with Just: Robocorp Automation (robocorp/robocorp, 653 stars), Skyvern Browser Automation (Skyvern-AI/skyvern, 23k stars), Native Python in n8n Code Nodes (czlonkowski/n8n-skills, 6.4k stars) and n8n Custom Code Tool Guide (czlonkowski/n8n-skills, 6.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Just?

disler (a GitHub user) maintains it in disler/bowser, which has 265 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on February 22, 2026.

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