testy.cool — Mostly LLMs, mostly.

Notes on LLMs, agents, automation and development. Mostly written for myself. There are a few tools here too.

Resources
- Blog: https://testy.cool/blog
- Machine-readable index: https://testy.cool/knowledge.json
- Search index: https://testy.cool/api/search

How to use this site
- Use the stable `id` field from /knowledge.json when referring to or revising a note.
- Draft notes are excluded from public endpoints.
- `status` tracks lifecycle. `resumeSignal` tracks whether a note should represent the author publicly.
- `canonical` is the preferred public URL. `supersedes` lists older note ids this note replaces.

Categories
- tutorial: Longer posts that build something up from zero.
- troubleshooting: Notes on specific problems and the fixes that worked.
- lab-notes: Short notes on what I tried, what happened, and what seems true so far.
- tools-tech: Tooling notes, implementation details, and small experiments.
- tech: General engineering notes and implementation details.
- conceptual: Posts that are more about framing than implementation.
- solution: Problem-and-solution writeups.

Notes
- tools-tech/universal-commerce-protocol-ucp | published | tools-tech | UCP - How to Actually Make Money With It | https://testy.cool/blog/tools-tech/universal-commerce-protocol-ucp
- tutorial/claude-code-ssh-setup | published | tutorial | Setting Up SSH for Claude Code | https://testy.cool/blog/tutorial/claude-code-ssh-setup
- troubleshooting/cloudflare-pages-redirect-custom-domain | published | troubleshooting | Fix Cloudflare Pages Redirect to Custom Domain | https://testy.cool/blog/troubleshooting/cloudflare-pages-redirect-custom-domain
- tutorial/css-clamp-fluid-responsive-design | published | tutorial | CSS Clamp Calculator and Tutorial | https://testy.cool/blog/tutorial/css-clamp-fluid-responsive-design
- tutorial/fumadocs-blog-setup | published | tutorial | How to Set Up a Blog with Fumadocs | https://testy.cool/blog/tutorial/fumadocs-blog-setup
- troubleshooting/windows-nul-file | published | troubleshooting | How to Remove Windows NUL File | https://testy.cool/blog/troubleshooting/windows-nul-file