claude-skills-marketplace and claude-email
These are ecosystem siblings within the Claude Code Skills marketplace—one provides foundational software engineering workflows (Git, testing, code review) while the other extends Claude's capabilities into a specialized domain (email management), both designed as pluggable skills for the same platform.
About claude-skills-marketplace
mhattingpete/claude-skills-marketplace
Claude Code Skills for software engineering workflows - Git automation, testing, and code review
Based on the README, here's a technical summary: Provides modular Claude Code plugins (Engineering Workflows, Visual Documentation, Code Operations, Productivity Skills) that activate contextually through declarative SKILL.md and AGENT.md files—enabling Git automation, testing, code review, visual diagram generation, and code refactoring without explicit user invocation. Implements the Anthropic code execution pattern via a sandboxed FastMCP server runtime, achieving 90-99% token reduction for bulk operations by executing Python locally rather than processing files through context.
About claude-email
AgriciDaniel/claude-email
AI-powered email management and marketing skill for Claude Code. Inbox triage, composition, quality review, deliverability audit, automation sequences, and marketing strategy.
Operates as a modular skill system within Claude Code using MCP servers for Gmail/Outlook inbox access, with 6 sub-skills spanning triage, composition, review, and strategy generation. Includes Python-based deliverability validation (SPF/DKIM/DMARC checking, blacklist monitoring) and pre-send quality gates that score emails across clarity, professionalism, CTA strength, and technical standards. Adapts recommendations via stored user profiles that capture business type, brand voice, and compliance region.
Related comparisons
Scores updated daily from GitHub, PyPI, and npm data. How scores work