mcp-builder

mcp-builder is an MCP server development skill for AI agents, published by kumaran-is in the claude-code-onboarding repository on GitHub. Skillspace rates mcp-builder C (73/100) and it passed the safety scan; the rating is based on static analysis only.

Use when building, testing, or designing MCP (Model Context Protocol) servers to integrate external APIs and services. Covers tool design, schema validation, error handling, security, resilience patterns, and production evaluations for Python (FastMCP) and Node/TypeScript (MCP SDK) implementations.

Grade
C
Quality
73 / 100
Safety
Passed
GitHub stars
32

Unproven: rated by static analysis only, not yet compared head-to-head.

Not launch-quality. It is graded C with a clean safety verdict, but our quality filters exclude it: it is a near-duplicate variant of another skill. So it is not in our launch-quality set, the skills our MCP server searches and recommends. How launch-quality is decided

This rating describes the version of the repository we crawled; it may have changed since, so go by its current files.

Our review

Architecture
94 / 100
Maturity
Structured: ships references or scripts
Security scan
Low-risk patterns
License
MIT
Adoption
Adopted by 0 other repositories, in 0 collections

What the scanner flagged

  • mentions secrets in text

Not checked yet

  • Category is a classifier prediction; no model has read this skill yet
  • Not judged on the rubric yet (not a contender in its category)
  • No blind task eval yet
  • Scope (portable / vendor / repo-internal) not assessed; only the top of each category is read for scope
  • Sibling files (scripts, references) not fetched; security scan covers SKILL.md only

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