mcp-builder
Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).
Install caution
Risk: Medium
Source: Anthropic Skills
Path: skills/mcp-builder/SKILL.md
Review flags: network access or external URLs, shell command snippets. These are review signals, not definitive security judgments; inspect before installing.
Required permissions
- • Environment variables / secrets
- • Shell commands
- • Network/API usage
Permissions are inferred from SKILL.md text only. They are review prompts, not guarantees about runtime behavior.
Risk flags explained
Mentions external URLs, network APIs, downloads, or HTTP client usage.
Contains shell command snippets. Review commands before copy/paste or agent execution.
Score explanation
Trust
- • Trust starts at 90 before review-signal penalties and metadata bonuses.
- • Risk-signal penalty: -18 from 2 detected flag(s).
- • Metadata bonus: +2 from author/version/description fields.
Utility
- • Utility starts at 55 and rewards clear descriptions, runnable examples, and explicit setup needs.
- • Description present: yes.
- • Command examples detected: 3.
- • Environment variables detected: 1.
Momentum
- • Momentum starts at 45 and uses public repo activity signals.
- • Recent commit activity: latest repo update was 2 day(s) ago.
- • Recent commit volume: 7 commit(s) in the lookback window (+20).
- • Source has strong public adoption: 128456 stars.
- • Fork activity suggests reuse: 15111 forks.
Overall
- • Overall score weights trust 45%, utility 35%, and momentum 20%.
Detected signals
Env vars
- • API
Commands
- • https://raw.githubusercontent.com/modelcontextprotocol/python-sdk/main/README.md
- • npm run build
- • python -m py_compile your_server.py
URLs
- • https://modelcontextprotocol.io/sitemap.xml`
- • https://modelcontextprotocol.io/sitemap.xml`,
- • https://modelcontextprotocol.io/specification/draft.md`
- • https://raw.githubusercontent.com/modelcontextprotocol/python-sdk/main/README.md`
- • https://raw.githubusercontent.com/modelcontextprotocol/typescript-sdk/main/README.md`
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SkillRadar scans SKILL.md as hostile text only. It does not execute commands, install packages, or load third-party skills.