agentskill.sh
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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).
Quality score
This tab explains the quality score through structured review blocks instead of collapsing everything into one number.
The install path, source visibility, and maintenance signals are strong enough to review quickly.
The description is specific, includes clear 'Use when' clauses, and employs a third-person voice, making it easy for agents to identify the skill at the right time.
Instructions are clear, actionable, and structured into a high-level workflow with detailed steps, providing valuable domain-specific guidance for building MCP servers.
Scored by deterministic linter
The skill demonstrates deep domain knowledge with specific APIs, concrete examples, and actionable error handling, showcasing real-world experience in MCP server development.
Structural Checks
Has Frontmatter
pass
Valid YAML frontmatter found
Has Name
pass
Frontmatter has name field
Has Description
pass
Frontmatter has description field
Content Length
pass
Content length: 9066 chars
Name Format
pass
Name format is valid
Description Length
pass
Description: 277 chars
Review checklist
Primary SKILL.md entrypoint is linked.
Install guidance is visible before download.
Repository context is attached to the listing.
Design Pattern
Design Pattern
tool-wrapper
Execution Contract
/learn @anthropics/mcp-builder
Source Visibility
The catalog points directly to skills/mcp-builder/SKILL.md so reviewers can inspect the live skill entrypoint instead of a generic readme.
Reviewed on Mar 28, 2026 · How scoring works