Say what you want.
It gets built, put online, and you get a link you can send to anyone. No account, no install, and it can remember things - scores, messages, entries - so everybody who opens it sees the same thing.
This only builds new ones. To change something you have already made, open its editor link and say what should be different under Change.
Or use your own agent
The box above is a Claude running on this machine. If you already have one of your own, point it here instead and it can do the same things - make a lambda, write the code, put it online - without a daily limit and without going through this page.
https://genhttp.dev/mcpClaude Code
claude mcp add --transport http genhttp https://genhttp.dev/mcp
Then ask it for what you want, the same way you would here.
Claude on the web
Settings, then Connectors, then Add custom connector. Paste the address above as the remote MCP server URL. There is no key and no sign in step.
That is also how to change something once it is built: give your agent the editor link and tell it what to do. More about using an agent here.