100% Free and Open Source

Free Claude Code Plugins

Four open source tools we built and use every day. Full stack development workflows, SEO auditing, AI context generation, and Reddit market research, all running inside Claude Code.

CodeSight

Universal AI context generator that saves thousands of tokens

npm GitHub

CodeSight scans your entire project and generates a compact context file your AI assistant can read instantly. Instead of burning 26K to 66K tokens exploring files, your AI reads 3K to 5K tokens and understands everything: routes, models, components, environment variables, middleware, and import relationships. Zero dependencies, AST precision, 25+ framework detectors, 8 ORM parsers, and 8 MCP tools. Works with Claude Code, Cursor, Copilot, Codex, Windsurf, Cline, and Aider.

npx codesight

11.2x average token reduction measured on real production codebases

25+ framework detectors and 8 ORM parsers with AST precision

Generates CLAUDE.md, .cursorrules, codex.md, and AGENTS.md in one command

8 MCP tools for Claude Code and Cursor integration

Blast radius analysis showing which files, routes, and models a change affects

One npx call. No config, no setup, no API keys required

Ultraship

The all in one builder plugin for Claude Code

npm GitHub

Ultraship turns Claude Code into a complete development workstation. Code review, SEO auditing, GEO optimization, Lighthouse performance testing, security scanning, Playwright E2E testing, and CLAUDE.md management all run from slash commands inside your terminal. Built for solo founders and small teams who ship fast and need every page optimized before it goes live.

npm install -g ultraship

Code review with architecture analysis, security scanning, and refactor suggestions

SEO, GEO, and AEO auditing that checks meta tags, structured data, and AI citation readiness

Lighthouse performance testing with CLS, LCP, and blocking resource identification

Security header auditing with CSP, HSTS, and OWASP recommendations

Google Search Console and Bing Webmaster submission guidance

Playwright E2E test generation and CLAUDE.md configuration management

Claude Rank

SEO and performance auditing for Claude Code

npm GitHub

Claude Rank is a focused SEO toolkit that runs inside Claude Code. It crawls your pages, checks technical SEO fundamentals, validates structured data, analyzes content quality, and generates actionable fix lists prioritized by impact. Built for developers who want their marketing pages to rank without hiring an SEO consultant. Run a full audit in under 60 seconds.

npm install -g claude-rank

Technical SEO audit covering meta tags, canonical URLs, robots directives, and sitemaps

Content quality scoring with readability analysis and thin content detection

Structured data validation for JSON LD schemas with Google rich result requirements

Performance risk identification for Core Web Vitals and render blocking resources

Security header checks with SEO impact explanations for each missing header

AI search visibility audit for citation readiness across ChatGPT, Perplexity, and Gemini

Reddit Intel MCP

Reddit market intelligence for Claude Code and Claude Desktop

npm GitHub

Reddit Intel MCP connects Claude to Reddit's API for real time market research. Search subreddits for product mentions, competitor analysis, pain point discovery, and feature request mining. Works as an MCP server in both Claude Code and Claude Desktop. Built for founders who want to validate demand, find early adopters, and monitor their niche without scrolling Reddit manually.

npx @anthropic/reddit-intel-mcp

Search Reddit posts and comments by keyword, subreddit, and date range

Competitor mention tracking across relevant subreddits with sentiment context

Pain point and feature request extraction from community discussions

Market validation by analyzing discussion volume and engagement around your niche

Works as an MCP server in Claude Code, Claude Desktop, and any MCP compatible client

Export structured data for further analysis in spreadsheets or databases

Why We Build These for Free

We use these tools on every client project. Ultraship runs our code reviews and SEO audits. Claude Rank validates every marketing page we ship. CodeSight saves thousands of tokens per AI conversation. Reddit Intel MCP helps us research market demand before writing a single line of code. Making them open source means the entire Claude Code community benefits, and we get contributions that make the tools better for everyone.

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