MCP Server Builder
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
A skill your agent uses when the user wants to persist a preference, skill, or knowledge.
Install Create Skill
$ npx skills add hashgraph-online/awesome-codex-plugins --skill create-skill -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins create-skill --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/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/val-town/plugins/skills/create-skill .claude/skills/create-skill && 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 "create-skill" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/create-skill into .claude/skills/create-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-skill", 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/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/create-skillType 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 hashgraph-online/awesome-codex-plugins --skill create-skill -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins create-skill --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/val-town/plugins/skills/create-skill .agents/skills/create-skill && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "create-skill" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/create-skill into .agents/skills/create-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-skill", 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 hashgraph-online/awesome-codex-plugins --skill create-skill -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins create-skill --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/val-town/plugins/skills/create-skill .cursor/skills/create-skill && 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 "create-skill" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/create-skill into .cursor/skills/create-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-skill", 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/hashgraph-online/awesome-codex-plugins.git --path plugins/val-town/plugins/skills/create-skill--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 hashgraph-online/awesome-codex-plugins --skill create-skill -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins create-skill --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/val-town/plugins/skills/create-skill .gemini/skills/create-skill && 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 "create-skill" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/create-skill into .gemini/skills/create-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-skill", 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 hashgraph-online/awesome-codex-plugins create-skillInstalls 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 hashgraph-online/awesome-codex-plugins --skill create-skill -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/val-town/plugins/skills/create-skill .github/skills/create-skill && 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 "create-skill" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/create-skill into .github/skills/create-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-skill", 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 hashgraph-online/awesome-codex-plugins --skill create-skill -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins create-skill --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/val-town/plugins/skills/create-skill .opencode/skills/create-skill && 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 "create-skill" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/val-town/plugins/skills/create-skill into .opencode/skills/create-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create-skill", 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
create-skill- GitHub stars
- 1.2k
- Token cost
- ~619 tokens
- SKILL.md length
- 280 words
- Files
- 1
- Skills in repo
- 686
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
A skill your agent uses when the user wants to persist a preference, skill, or knowledge.
- The user wants to persist a preference
- SKILL.md covers Frontmatter, Best practices, Example and Remixing
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- It would aid future val development to store a memory of how best to build something
What it does
Create Skill is an agent skill from hashgraph-online/awesome-codex-plugins. Use when the user wants to persist a preference, skill, or knowledge. Use when it would aid future val development to store a memory of how best to build something.
Its SKILL.md is about 620 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 Agent Workflows. It works with Model Context Protocol. The repository describes itself as: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is Apache-2.0.
When your agent uses it
- The user wants to persist a preference
- It would aid future val development to store a memory of how best to build something
Example prompts
- “/create-skill”
What it can do on your machine
Read from SKILL.md and the folder at commit 78497e5. 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 (its code samples are markdown).
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):
platform.claude.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
Create Skill loads about 619 tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 280 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 hashgraph-online/awesome-codex-plugins at commit 78497e5, republished under its Apache-2.0 licence (© hashgraph-online). 280 words, ~619 tokens.
Download SKILL.mdSave it as
.claude/skills/create-skill/SKILL.md (or your agent's skills folder).- name
- create-skill
- description
- Use when the user wants to persist a preference, skill, or knowledge. Use when it would aid future val development to store a memory of how best to build something.
- triggers
- skill, preference, knowledge, memory
Skills in Val Town instruct Townie and other AI agents using the Val Town MCP server how to write idiomatic vals that respect a user's preferences and knowledge.
In any val, a user can create a /skills/<name>/SKILL.md file, e.g. /skills/design/SKILL.md.
Townie and the Val Town MCP server index skills with that directory/file structure across all of a user's vals.
A user may choose to centralize their skills in one val or co-locate skills across multiple vals.
Frontmatter
A skill markdown file must have frontmatter:
name: kebab-case name of the skill; contains lowercase letters, numbers, and hyphensdescription: helps the agent decide when the skill is relevant. A good skill description is critical for agent discoverytriggers: (optional) is a list of keywords to tip off the agent
The description and triggers fields enable skill discovery, i.e. tells the user's AI agent (e.g. Claude Code, Codex, Cursor) when to use it.
The more specific the better, including key terms that should trigger use (which can also be enumerated in triggers).
Skills without frontmatter will be silently skipped, so Townie/MCP will not be able to access them.
Best practices
The Claude Platform Docs offer skill authoring best practices, including:
- Be concise. The context window is a public good
- Always write in third person
- Default assumption: AI agents are already very smart
- Be as specific as possible (e.g. code is better than plain english where possible)
- Improve skills based on usage and testing
Example
---
name: design
description: Use when styling a val's UI. Use for frontend vals that return JSX or HTML
triggers: [css, styling, layout, theme]
---
- Use `.css` files, avoid inline styles and Tailwind
- Locate React components in a `/components` directory, one component per file
- Use a sans-serif web-native font stack, no external fonts
- ...Remixing
A new skill can be created by remixing another user’s skill and customizing the SKILL.md file.
There is a remix button in the val.town UI, and a remix_val tool in the Val Town MCP server to do so.
© hashgraph-online, 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 plugins/val-town/plugins/skills/create-skill of hashgraph-online/awesome-codex-plugins.
Open the folder on GitHubat commit 78497e5
Compare with similar skills
Create Skill 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 |
|---|---|---|---|---|---|---|
| Create Skill this skillhashgraph-online/awesome-codex-plugins | 1.2k | — | ~619 | Automated safety check: Pass | Apache-2.0 | |
| MCP Server Builderanthropics/skills | 180k | 64 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| MCP Server BuildershareAI-lab/learn-claude-code | 78k | 5 repos | ~1.2k | Automated safety check: Pass | MIT | |
| MCP Integration for Pluginsanthropics/claude-plugins-official | 38k | 11 repos | ~3.1k | Automated safety check: Pass | Apache-2.0 | |
| Fastmcp Client CLIPrefectHQ/fastmcp | 28k | 1 repos | ~823 | Automated safety check: Pass | Apache-2.0 | |
| MemPalace Memory SearchMemPalace/mempalace | 59k | — | ~1.4k | Automated safety check: Pass | MIT |
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Works with
Categories
Questions about Create Skill
What does Create Skill do?
A skill your agent uses when the user wants to persist a preference, skill, or knowledge. Create Skill is an agent skill from hashgraph-online/awesome-codex-plugins. Use when the user wants to persist a preference, skill, or knowledge.
When should I use Create Skill?
Create Skill fits situations like: the user wants to persist a preference; it would aid future val development to store a memory of how best to build something.
How do I install Create Skill in Claude Code?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill create-skill -a claude-code`. Or copy the skill folder (plugins/val-town/plugins/skills/create-skill in hashgraph-online/awesome-codex-plugins) into .claude/skills/create-skill in your project. Claude Code loads it when a task matches its description.
How do I install Create Skill in Codex?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill create-skill -a codex`. Or copy the skill folder (plugins/val-town/plugins/skills/create-skill in hashgraph-online/awesome-codex-plugins) into .agents/skills/create-skill in your project. Codex loads it when a task matches its description.
Can I use Create Skill 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 hashgraph-online/awesome-codex-plugins --skill create-skill -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/create-skill, .gemini/skills/create-skill, .github/skills/create-skill and .opencode/skills/create-skill in your project.
What does Create Skill need to run?
SKILL.md names no scripts, command-line tools or credentials: Create Skill is instructions for the agent only.
Does Create Skill access the network?
SKILL.md names 1 domain. As links in the text: platform.claude.com. This is read from the text; nothing was executed.
Is Create Skill 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 Create Skill use?
Create Skill 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 Create Skill use?
About 619 tokens (SKILL.md is roughly 2.5k 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 Create Skill?
Skills that share tags, products or a category with Create Skill: MCP Server Builder (anthropics/skills, 180k stars), MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars), MCP Integration for Plugins (anthropics/claude-plugins-official, 38k stars) and Fastmcp Client CLI (PrefectHQ/fastmcp, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Create Skill?
hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,242 GitHub stars. The repository holds 686 skills in this directory. The repository was last updated on October 8, 2026.
Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.