Mason
sickn33/agentic-awesome-skills
Produces clean, functional code that matches the architecture and checklists.
Working with Mason bricks: installing the CLI, creating and consuming bricks, understanding brick structure, Mustache template syntax, hooks, and discovering bricks on BrickHub.
No licenceAuto-check: notes
Install Mason
$ npx skills add VeryGoodOpenSource/very_good_templates --skill mason -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates mason --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/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/mason .claude/skills/mason && 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 "mason" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/mason into .claude/skills/mason/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mason", 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/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/masonType 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 VeryGoodOpenSource/very_good_templates --skill mason -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates mason --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/mason .agents/skills/mason && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "mason" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/mason into .agents/skills/mason/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mason", 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 VeryGoodOpenSource/very_good_templates --skill mason -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates mason --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/mason .cursor/skills/mason && 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 "mason" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/mason into .cursor/skills/mason/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mason", 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/VeryGoodOpenSource/very_good_templates.git --path .agents/skills/mason--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 VeryGoodOpenSource/very_good_templates --skill mason -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates mason --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/mason .gemini/skills/mason && 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 "mason" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/mason into .gemini/skills/mason/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mason", 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 VeryGoodOpenSource/very_good_templates masonInstalls 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 VeryGoodOpenSource/very_good_templates --skill mason -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/mason .github/skills/mason && 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 "mason" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/mason into .github/skills/mason/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mason", 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 VeryGoodOpenSource/very_good_templates --skill mason -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates mason --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/mason .opencode/skills/mason && 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 "mason" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/mason into .opencode/skills/mason/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mason", 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
mason- GitHub stars
- 174
- Token cost
- ~2.3k tokens
- SKILL.md length
- 495 words
- Files
- 1
- Skills in repo
- 2
- Repo updated
- First seen
- Licence
- None found
At a glance
Working with Mason bricks: installing the CLI, creating and consuming bricks, understanding brick structure, Mustache template syntax, hooks, and discovering bricks on BrickHub.
- SKILL.md covers Core Standards, CLI Installation, Workspace Setup and Consuming Bricks, plus 8 more sections
- Calls brew and dart; reaches github.com
What it does
Mason is an agent skill from VeryGoodOpenSource/very_good_templates. Working with Mason bricks: installing the CLI, creating and consuming bricks, understanding brick structure, Mustache template syntax, hooks, and discovering bricks on BrickHub.
Its SKILL.md is about 2.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Collection of open-source templates created and maintained by Very Good Ventures.
Example prompts
- “/mason”
Requirements
- Pre-approved tools (allowed-tools): Read, Glob, Grep, Bash
What it can do on your machine
Read from SKILL.md and the folder at commit a2bc5a6. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGlobGrepBash
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
brewdart
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
github.com
Also links to:
brickhub.devmustache.github.iodocs.brickhub.dev
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
Mason loads about 2.3k tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 495 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Glob, Grep, Bash
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 495 words (~2,277 tokens).
“Mason is a collection of tools that allow developers to create and consume reusable templates called bricks. BrickHub is the registry where bricks are published and discovered.”
- name
- mason
- allowed-tools
- Read, Glob, Grep, Bash
- when_to_use
- Use when creating, modifying, generating, or debugging Mason bricks and templates. Also use when asked about brick.yaml, __brick__ templates, Mustache syntax…
Files
Just SKILL.md in .agents/skills/mason of VeryGoodOpenSource/very_good_templates.
Open the folder on GitHubat commit a2bc5a6
Compare with similar skills
Mason 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 |
|---|---|---|---|---|---|---|
| Mason this skillVeryGoodOpenSource/very_good_templates | 174 | — | ~2.3k | Automated safety check: Notes | None | |
| Masonsickn33/agentic-awesome-skills | 47k | 1 repos | ~1.5k | Automated safety check: Pass | MIT | |
| Generating Python Installeraffaan-m/ECC | 274k | 1 repos | ~6.1k | Automated safety check: Pass | MIT | |
| Kubeshark Installerkubeshark/kubeshark | 12k | — | ~3.6k | Automated safety check: Notes | Apache-2.0 | |
| Pwa Installabilitythedaviddias/Front-End-Checklist | 74k | — | ~450 | Automated safety check: Pass | MIT | |
| Video Understandcalesthio/OpenMontage | 65k | — | ~841 | Automated safety check: Pass | AGPL-3.0 |
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Generating Python Installer
affaan-m/ECC
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Kubeshark Installer
kubeshark/kubeshark
Installs and configures Kubeshark on a Kubernetes cluster, choosing between the quick CLI path and a Helm install with custom values.
Pwa Installability
thedaviddias/Front-End-Checklist
A skill your agent uses when auditing PWA readiness, adding an install prompt, or preparing a web app for submission to Microsoft Store or Google Play via PWA Builder.
Video Understand
calesthio/OpenMontage
Understand video content locally using ffmpeg frame extraction and Whisper transcription.
Markstream Install
sickn33/agentic-awesome-skills
Install and configure Markstream streaming Markdown renderers for Vue, React, Svelte, Angular, Nuxt, Next.js, and Vue 2 applications.
More from VeryGoodOpenSource/very_good_templates
iOS Migration Check
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Checks whether a template's generated iOS project drifts on its first Flutter build, caused by Flutter's built-in iOS project migrations, and folds the migrated files back into the brick.
Questions about Mason
What does Mason do?
Working with Mason bricks: installing the CLI, creating and consuming bricks, understanding brick structure, Mustache template syntax, hooks, and discovering bricks on BrickHub. Mason is an agent skill from VeryGoodOpenSource/very_good_templates. Working with Mason bricks: installing the CLI, creating and consuming bricks, understanding brick structure, Mustache template syntax, hooks, and discovering bricks on BrickHub.
How do I install Mason in Claude Code?
Run `npx skills add VeryGoodOpenSource/very_good_templates --skill mason -a claude-code`. Or copy the skill folder (.agents/skills/mason in VeryGoodOpenSource/very_good_templates) into .claude/skills/mason in your project. Claude Code loads it when a task matches its description.
How do I install Mason in Codex?
Run `npx skills add VeryGoodOpenSource/very_good_templates --skill mason -a codex`. Or copy the skill folder (.agents/skills/mason in VeryGoodOpenSource/very_good_templates) into .agents/skills/mason in your project. Codex loads it when a task matches its description.
Can I use Mason 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 VeryGoodOpenSource/very_good_templates --skill mason -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mason, .gemini/skills/mason, .github/skills/mason and .opencode/skills/mason in your project.
What does Mason need to run?
Going by SKILL.md and its folder, Mason needs the command-line tools its instructions call (brew and dart). Its frontmatter pre-approves these tools: Read, Glob, Grep, Bash.
Does Mason access the network?
SKILL.md names 4 domains. In commands or code: github.com; the agent is likely to contact it when it follows the instructions. As links in the text: brickhub.dev, mustache.github.io and docs.brickhub.dev. This is read from the text; nothing was executed.
Is Mason safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Mason use?
No licence was found for Mason or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Mason use?
About 2.3k tokens (SKILL.md is roughly 9.1k 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 Mason?
Skills that share tags, products or a category with Mason: Mason (sickn33/agentic-awesome-skills, 47k stars), Generating Python Installer (affaan-m/ECC, 274k stars), Kubeshark Installer (kubeshark/kubeshark, 12k stars) and Pwa Installability (thedaviddias/Front-End-Checklist, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Mason?
VeryGoodOpenSource (a GitHub organization) maintains it in VeryGoodOpenSource/very_good_templates, which has 174 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 5, 2026.
Source: VeryGoodOpenSource/very_good_templates on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.