HTML Throwaway Editor

When describing what you want to do is harder than just doing it, build a one-off editor. Not a product. Not a reusable tool. A single HTML file purpose-built for this one piece of data, with one Submit button at the end that sends the result back to the agent.

Pre-flight — run BEFORE writing the artifact

Invoke html-skills:html-skills-listen (Skill tool) first; it is idempotent. If it returns a URL, inject it verbatim as window.__CLAUDE_SUBMIT_URL__ in the HTML you are about to write, ?t= query string included (a local, single-session loopback handshake — not a credential). If it reported web/sandbox mode, leave that line out; submitToClaude then falls back to clipboard mode.

When to use this skill

• "I need to reprioritize / reorder / triage these N things"
• "Help me edit / curate / annotate / tag this dataset"
• "I want to tune / pick / configure these values" (where the values aren't simple text)
• "Build me a quick editor for X"
• Any time the user describes a manipulation that would be painful to do in chat but easy with a UI

Output requirements