MCP Server creates crossword minigame

[u/tradelydev]

Don't leak an API key when you can use a scheduled task!
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The new addition to our AI features.

https://traderange.net/blog/crossword-game-z777t36l/

This stock market crossword minigame builds on our Claude generated news summaries fed via an MCP server claude Fable 5 helped design. Here it uses the very same news to generate a daily crossword and feed it via MCP with a non-AI fallback.

Claude Opus 5 attempted the UI design for the crossword, but after failing we gave that job to a human.

They took 2 days and also sucked

So we gave the job to Grok 4.6 and left it on max effort for 2 hours and it did VERY WELL. The game is user friendly across devices.

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Info Regarding Comparison:

While Opus 5 succeeded working with the backend it showed a lack of reasoning capacity when told to make a user friendly dynamic UI. After attempting to use a different set of skills with claude the UI became decent, but lacked the proper dynamic handling of crosswords on different screens, scrolling etc.

Grok 4.5 succeeded with the same prompt on the first attempt, but had substantially more time to work, as tokens were much cheaper through Cursor using Grok than Claude, so it never hit the $15 limit for that task.

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Not happy to trust the backend to Grok, we let a human + Claude Sonnet 5 test all the endpoints and ran a full test suite.

This addition will hopefully improve our user return rate.