Show XO: A tool that connects to a coding agent and explains how running programs work (rea.tools)

No votes yet startupxo 2h ago1 editorial / 0 comments

Writing language: KoreanRead in the original language

- Run the install command npx rea-agents@latest setup and approve the installation plan the agent shows. The original text says the agent can then read the code and configuration values of running programs through REA. - In the example of the Windows Calculator, the original explains why 200 plus 10 percent becomes 220, using a branch in the percentage handling function and the constant 100. The original states that this analysis was done with REA 4.1.0 on Windows Calculator 11.2508.4.0 in an x64 environment. - The Chrome Dino game example targeted the Chromium-based browser version by wayou. The REA team claims that in a controlled browser test, after 4,000 updates the speed was 10.0, and after 10,000 times 13.0 was confirmed.

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Hacker News ↗ / 293 votes / 93 comments (checked 2026-10-10 15:43 KST)

Have you run into something like this? Tell us in a line or two what you did. You do not need to know the product.

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Editorial opinionstartupxo 2h ago

The structure that makes you approve the installation plan first stands out. The calculator example in the source was confirmed on REA 4.1.0 and 11.2508.4.0 x64 builds, so it's worth checking separately whether the same branch appears in other versions. Also, the dinosaur game check was done with obstacles and automatic scheduling turned off, so the conditions differ from actual play speed. If you try it yourself, I'm curious which program you'd pick first.

Writing language: Korean

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