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.
This skill should be used when users want to discover, browse, or audit cc-handbook marketplace plugins.
Apache-2.0Auto-check passed
Install Handbook Discover
$ npx skills add NikiforovAll/claude-code-rules --skill handbook-discover -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install NikiforovAll/claude-code-rules handbook-discover --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/NikiforovAll/claude-code-rules.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/handbook-discover/skills/handbook-discover .claude/skills/handbook-discover && 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 "handbook-discover" agent skill from https://github.com/NikiforovAll/claude-code-rules/tree/main/plugins/handbook-discover/skills/handbook-discover into .claude/skills/handbook-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-discover", 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/NikiforovAll/claude-code-rules/tree/main/plugins/handbook-discover/skills/handbook-discoverType 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 NikiforovAll/claude-code-rules --skill handbook-discover -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install NikiforovAll/claude-code-rules handbook-discover --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NikiforovAll/claude-code-rules.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/handbook-discover/skills/handbook-discover .agents/skills/handbook-discover && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "handbook-discover" agent skill from https://github.com/NikiforovAll/claude-code-rules/tree/main/plugins/handbook-discover/skills/handbook-discover into .agents/skills/handbook-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-discover", 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 NikiforovAll/claude-code-rules --skill handbook-discover -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install NikiforovAll/claude-code-rules handbook-discover --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NikiforovAll/claude-code-rules.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/handbook-discover/skills/handbook-discover .cursor/skills/handbook-discover && 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 "handbook-discover" agent skill from https://github.com/NikiforovAll/claude-code-rules/tree/main/plugins/handbook-discover/skills/handbook-discover into .cursor/skills/handbook-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-discover", 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/NikiforovAll/claude-code-rules.git --path plugins/handbook-discover/skills/handbook-discover--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 NikiforovAll/claude-code-rules --skill handbook-discover -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install NikiforovAll/claude-code-rules handbook-discover --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NikiforovAll/claude-code-rules.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/handbook-discover/skills/handbook-discover .gemini/skills/handbook-discover && 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 "handbook-discover" agent skill from https://github.com/NikiforovAll/claude-code-rules/tree/main/plugins/handbook-discover/skills/handbook-discover into .gemini/skills/handbook-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-discover", 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 NikiforovAll/claude-code-rules handbook-discoverInstalls 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 NikiforovAll/claude-code-rules --skill handbook-discover -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/NikiforovAll/claude-code-rules.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/handbook-discover/skills/handbook-discover .github/skills/handbook-discover && 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 "handbook-discover" agent skill from https://github.com/NikiforovAll/claude-code-rules/tree/main/plugins/handbook-discover/skills/handbook-discover into .github/skills/handbook-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-discover", 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 NikiforovAll/claude-code-rules --skill handbook-discover -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install NikiforovAll/claude-code-rules handbook-discover --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NikiforovAll/claude-code-rules.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/handbook-discover/skills/handbook-discover .opencode/skills/handbook-discover && 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 "handbook-discover" agent skill from https://github.com/NikiforovAll/claude-code-rules/tree/main/plugins/handbook-discover/skills/handbook-discover into .opencode/skills/handbook-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-discover", 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
handbook-discover- GitHub stars
- 141
- Token cost
- ~366 tokens
- SKILL.md length
- 42 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 26
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
This skill should be used when users want to discover, browse, or audit cc-handbook marketplace plugins.
- Phrases include discover plugins
- SKILL.md covers Usage, Interpreting Results and Follow-up Actions
- Runs Python scripts from its folder; calls python and claude
- List handbook plugins
What it does
Handbook Discover is an agent skill from NikiforovAll/claude-code-rules. This skill should be used when users want to discover, browse, or audit cc-handbook marketplace plugins. Shows all available plugins with installation status, versions, and component breakdown (skills, agents, commands, MCP/LSP servers, hooks). Trigger phrases include "discover plugins", "list handbook plugins", "what plugins are available", "browse marketplace".
Its SKILL.md is about 370 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/discover.py`).
It works with Model Context Protocol. The repository describes itself as: Learn practical techniques to enhance your AI-assisted development workflow with Claude Code. The licence is Apache-2.0.
When your agent uses it
- Phrases include discover plugins
- List handbook plugins
- What plugins are available
- Browse marketplace
Example prompts
- “discover plugins”
- “list handbook plugins”
- “what plugins are available”
- “/handbook-discover”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 281c063. 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
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
pythonclaude
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
Handbook Discover loads about 366 tokens when it runs. Until then it costs about 96 tokens; SKILL.md has 42 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); the scripts in this folder are not scanned.
SKILL.md
The full file from NikiforovAll/claude-code-rules at commit 281c063, republished under its Apache-2.0 licence (© NikiforovAll). 42 words, ~366 tokens.
Download SKILL.mdSave it as
.claude/skills/handbook-discover/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- handbook-discover
- description
- This skill should be used when users want to discover, browse, or audit cc-handbook marketplace plugins. Shows all available plugins with installation status, versions, and component breakdown (skills, agents, commands, MCP/LSP servers, hooks). Trigger phrases include "discover plugins", "list handbook plugins", "what plugins are available", "browse marketplace".
Handbook Plugin Discovery
Run the discovery script to inventory all plugins in a Claude Code marketplace.
Usage
python ${CLAUDE_SKILL_DIR}/scripts/discover.py # default: cc-handbook
python ${CLAUDE_SKILL_DIR}/scripts/discover.py --detailed # show component names
python ${CLAUDE_SKILL_DIR}/scripts/discover.py --json # machine-readable
python ${CLAUDE_SKILL_DIR}/scripts/discover.py --filter dotnet # filter by keyword
python ${CLAUDE_SKILL_DIR}/scripts/discover.py --uninstalled # only uninstalled
python ${CLAUDE_SKILL_DIR}/scripts/discover.py -m <marketplace> # other marketplace
python ${CLAUDE_SKILL_DIR}/scripts/discover.py -r <path> # explicit repo pathInterpreting Results
[+]— installed and enabled[o]— installed but disabled[ ]— not installed- Component counts:
S=skillsA=agentsC=commandsM=mcpL=lspH=hooks
Follow-up Actions
For uninstalled plugins, suggest:
claude plugin install <plugin-name>@cc-handbook© NikiforovAll, 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
SKILL.md and 1 other file (scripts) in plugins/handbook-discover/skills/handbook-discover of NikiforovAll/claude-code-rules.
- SKILL.md
- scripts/discover.py
Open the folder on GitHubat commit 281c063
Compare with similar skills
Handbook Discover 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 |
|---|---|---|---|---|---|---|
| Handbook Discover this skillNikiforovAll/claude-code-rules | 141 | — | ~366 | Automated safety check: Pass | Apache-2.0 | |
| MCP Server Builderanthropics/skills | 180k | 63 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| MCP Server BuildershareAI-lab/learn-claude-code | 78k | 4 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 | |
| Figma use_figma Plugin API Ruleswarpdotdev/warp | 65k | 4 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 | |
| Stitch to Remotion Walkthrough Videosgoogle-labs-code/stitch-skills | 8.5k | 6 repos | ~3.2k | Automated safety check: Notes | Apache-2.0 |
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Works with
Questions about Handbook Discover
What does Handbook Discover do?
This skill should be used when users want to discover, browse, or audit cc-handbook marketplace plugins. Handbook Discover is an agent skill from NikiforovAll/claude-code-rules. This skill should be used when users want to discover, browse, or audit cc-handbook marketplace plugins.
When should I use Handbook Discover?
Handbook Discover fits situations like: phrases include discover plugins; list handbook plugins; what plugins are available; browse marketplace.
How do I install Handbook Discover in Claude Code?
Run `npx skills add NikiforovAll/claude-code-rules --skill handbook-discover -a claude-code`. Or copy the skill folder (plugins/handbook-discover/skills/handbook-discover in NikiforovAll/claude-code-rules) into .claude/skills/handbook-discover in your project. Claude Code loads it when a task matches its description.
How do I install Handbook Discover in Codex?
Run `npx skills add NikiforovAll/claude-code-rules --skill handbook-discover -a codex`. Or copy the skill folder (plugins/handbook-discover/skills/handbook-discover in NikiforovAll/claude-code-rules) into .agents/skills/handbook-discover in your project. Codex loads it when a task matches its description.
Can I use Handbook Discover 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 NikiforovAll/claude-code-rules --skill handbook-discover -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/handbook-discover, .gemini/skills/handbook-discover, .github/skills/handbook-discover and .opencode/skills/handbook-discover in your project.
What does Handbook Discover need to run?
Going by SKILL.md and its folder, Handbook Discover needs Python for the scripts in its folder and the command-line tools its instructions call (python and claude). Our summary lists: Python 3.
Does Handbook Discover 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 Handbook Discover 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Handbook Discover use?
Handbook Discover 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 Handbook Discover use?
About 366 tokens (SKILL.md is roughly 1.5k 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 Handbook Discover?
Skills that share tags, products or a category with Handbook Discover: 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 Figma use_figma Plugin API Rules (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Handbook Discover?
NikiforovAll (a GitHub user) maintains it in NikiforovAll/claude-code-rules, which has 141 GitHub stars. The repository holds 26 skills in this directory. The repository was last updated on October 2, 2026.
Source: NikiforovAll/claude-code-rules on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.