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@olgasafonova

Free

Building tools for AI-assisted development, MCP servers, and Claude Code skills

FreeFree tier
Type
Open Source
Visit Website GitHub (40 stars)
LinksLinkedIn

About @olgasafonova

Olga Safonova is a developer recognized in the sickn33/antigravity-awesome-skills repository who builds tools for AI-assisted development, focusing on MCP servers and Claude Code skills. Her featured projects include SkillCheck (a validator for Claude Code skills against the agentskills specification), multiple MCP servers (miro, mediawiki, productplan, nordic-registry, gleif, tilbudstrolden) for integrating whiteboards, wikis, roadmaps, registries, financial data, and grocery deals into AI conversations, ridge for reverse-engineering architecture from code and markdown, and learning dojos (Go Dojo and KanaDojo) with spaced repetition. She also develops Go libraries for MCP server developers, such as mcp-servercard-go and mcp-otel-go.

Key Features

SkillCheck validates Claude Code skills against the agentskills specification (free and Pro version with anti-slop, security, WCAG checks)
MCP servers for miro, mediawiki, productplan, nordic-registry, gleif, and tilbudstrolden (Nordic grocery deals)
Ridge reverse-engineers architecture from Go, TypeScript, Python code and markdown
Go Dojo and KanaDojo learning dojos with spaced repetition, visual metaphors, and belt system
Go libraries mcp-servercard-go and mcp-otel-go for MCP server development

Pros & Cons

Pros
  • All tools are open-source and free to use
  • Wide range of practical MCP servers for common development and workflow tasks
  • Includes validation, security checks, and architecture analysis
  • Learning dojos are well-designed with spaced repetition and visual metaphors
  • Actively maintained by an experienced developer in AI-assisted development
Cons
  • Tools are primarily developed for personal use and may lack extensive documentation outside GitHub
  • Some MCP servers require setup and are aimed at developers familiar with MCP protocol
  • Not a single unified tool; each project serves a specific niche

Best For

AI-assisted development with Claude Code skill validationIntegrating whiteboards, wikis, and roadmaps into AI conversations via MCP serversReverse-engineering software architecture and detecting structural driftLearning Go or Japanese kana through spaced repetition and visual mnemonicsBuilding MCP servers with OpenTelemetry tracing and discovery documents