xClean Tools
⌘K
AI Hub
AI assistants
ChatGPT
OpenAI's assistant
Claude
Anthropic's assistant
Gemini
Google's assistant
Perplexity
AI answer engine with citations
GitHub Copilot
AI pair programmer
MCP servers
Filesystem
Official — read and write local files
Fetch
Official — fetch and convert web pages
Git
Official — local repo read and commit
Memory
Official — knowledge-graph memory
Sequential Thinking
Official — step-by-step reasoning
Time
Official — time and timezone conversion
Everything
Official — reference and test server
GitHub
Repos, issues, pull requests
Cloudflare
Workers, KV, D1, R2
Sentry
Error and issue triage
Playwright
Browser automation
Context7
Up-to-date library docs
Supabase
Postgres, auth, storage
Notion
Pages and databases
Stripe
Payments and billing API
References
MDN Web Docs
The web platform reference
Can I Use
Browser support tables
DevDocs
Offline-capable API docs
web.dev
Performance and best practices
Utilities
regex101
Regex tester with explanations
crontab.guru
Cron expression editor
Excalidraw
Hand-drawn style diagrams
Carbon
Code screenshots
Bundlephobia
npm package size cost