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Agent skill

MCP Tools

by extra-org in extra-org/extra

Working on Python plugin tools, MCP server connections, tool invocation, or tool tracing.

MITAuto-check passedAgent Workflows

Install MCP Tools

skills CLI
$ npx skills add extra-org/extra --skill mcp-tools -a claude-code

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

GitHub CLI
$ gh skill install extra-org/extra mcp-tools --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/extra-org/extra.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/mcp-tools .claude/skills/mcp-tools && 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
mcp-tools
GitHub stars
113
Token cost
~473 tokens
SKILL.md length
193 words
Files
1
Skills in repo
14
Repo updated
First seen
Licence
MIT

At a glance

Working on Python plugin tools, MCP server connections, tool invocation, or tool tracing.

  • Tasks that involve MCP servers
  • SKILL.md covers When to use this skill, Files to read first, Architecture rules and Implementation rules, plus 2 more sections
  • Calls make

What it does

MCP Tools is an agent skill from extra-org/extra. Working on Python plugin tools, MCP server connections, tool invocation, or tool tracing. Primary task is tasks/0007-mcp-tools-and-permissions.md.

Its SKILL.md is about 470 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, covering MCP servers. It works with Model Context Protocol and Python. The repository describes itself as: Turn your product into an AI-powered assistant. The licence is MIT.

When your agent uses it

  • Tasks that involve MCP servers

Example prompts

  • “/mcp-tools”

Requirements

  • Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit 023b0a0. 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:

    • make

    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

MCP Tools loads about 473 tokens when it runs. Until then it costs about 39 tokens; SKILL.md has 193 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~39
When it runs · the whole SKILL.md, loaded when a task matches
~473

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 extra-org/extra at commit 023b0a0, republished under its MIT licence (© extra-org). 193 words, ~473 tokens.

Download SKILL.mdSave it as .claude/skills/mcp-tools/SKILL.md (or your agent's skills folder).
name
mcp-tools
description
Working on Python plugin tools, MCP server connections, tool invocation, or tool tracing. Primary task is tasks/0007-mcp-tools-and-permissions.md.
generated
true
source
.ai/skills/mcp-tools.md
<!--
This file is generated by tools/skills.
Do not edit this file directly.
Edit .ai/skills/mcp-tools.md and run `make generate-ai`.
-->

Skill: MCP & Tools

When to use this skill

Use this when working on Python plugin tools, MCP server connections, tool invocation, or tool tracing. Primary task: tasks/0007-mcp-tools-and-permissions.md.

Files to read first

  • AGENTS.md
  • docs/MCP_AND_TOOLS.md
  • docs/RUNTIME_LIFECYCLE.md

Architecture rules

  • Resolver plugins run before a node; tool plugins are exposed to the LLM during execution.
  • MCP clients are created once and shared; never per request.
  • Per-request data flows via ExecutionContext / ctx.
  • Prompt text is not a security boundary.
  • Secrets never live in YAML; they are redacted in traces.

Implementation rules

  • Implement tool registry and MCP integration in src/agentplatform/tools.
  • Load plugin classes once where possible.
  • Invoke configured class/method references with ctx.
  • Validate tool and MCP ids during validation/compilation; runtime should use resolved bindings.
  • Hold MCP clients on the long-lived runtime.

Validation checklist

  • Tool plugin references load and invoke through the registry.
  • MCP connections are created once and reused.
  • Per-request context does not leak through shared state.
  • Tool/MCP calls are traced with redaction.
  • Tests cover success and failure with fakes.
  • make check passes.

Common mistakes to avoid

  • Recreating MCP connections per request.
  • Treating resolvers as tools or tools as resolvers.
  • Skipping trace redaction.
  • Relying on prompt wording for enforcement.

© extra-org, 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/mcp-tools of extra-org/extra.

Open the folder on GitHubat commit 023b0a0

Compare with similar skills

MCP Tools 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.

MCP Tools compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
MCP Tools this skillextra-org/extra113—~473Automated safety check: PassMIT
MCP Server Builderanthropics/skills180k62 repos~2.3kAutomated safety check: PassApache-2.0
MCP Server BuildershareAI-lab/learn-claude-code78k5 repos~1.2kAutomated safety check: PassMIT
Fastmcp Client CLIPrefectHQ/fastmcp28k1 repos~823Automated safety check: PassApache-2.0
MemPalace Setup and OperationMemPalace/mempalace59k—~2.2kAutomated safety check: PassMIT
FastmcpTommy-yw/RunbookHermes5463 repos~2.1kAutomated safety check: PassMIT

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Works with

Categories

Questions about MCP Tools

What does MCP Tools do?

Working on Python plugin tools, MCP server connections, tool invocation, or tool tracing. MCP Tools is an agent skill from extra-org/extra. Working on Python plugin tools, MCP server connections, tool invocation, or tool tracing.

When should I use MCP Tools?

MCP Tools fits situations like: tasks that involve MCP servers.

How do I install MCP Tools in Claude Code?

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

How do I install MCP Tools in Codex?

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

Can I use MCP Tools 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 extra-org/extra --skill mcp-tools -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mcp-tools, .gemini/skills/mcp-tools, .github/skills/mcp-tools and .opencode/skills/mcp-tools in your project.

What does MCP Tools need to run?

Going by SKILL.md and its folder, MCP Tools needs the command-line tools its instructions call (make). Our summary lists: Python 3.

Does MCP Tools 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 MCP Tools 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 MCP Tools use?

MCP Tools 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 MCP Tools use?

About 473 tokens (SKILL.md is roughly 1.9k 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 MCP Tools?

Skills that share tags, products or a category with MCP Tools: MCP Server Builder (anthropics/skills, 180k stars), MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars), Fastmcp Client CLI (PrefectHQ/fastmcp, 28k stars) and MemPalace Setup and Operation (MemPalace/mempalace, 59k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains MCP Tools?

extra-org (a GitHub organization) maintains it in extra-org/extra, which has 113 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on September 7, 2026.

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