@FileCityAI

The fastest way to understand any codebase. Interactive. Visual. Narrated step by step. Part of @Principal_AI_

app.principal-ade.com
Joined January 2026
  • Tweets407
  • Following0
  • Followers490
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Every codebase has a shape. See structure, who built what, what shipped, what a PR is changing, and more.
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Fernando@Principal_ADEAug 5
Making some style improvements and now you can copy the command to continue the session in your terminal! Currently supporting @opencode @pidotdev @grok and @cline
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Fernando@Principal_ADEAug 1
Separating Monorepos into packages for exploration
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Fernando@Principal_ADEJul 30
Steering a model is still very much required. One of our goals is to be able to bust this myth that coding agents are are more than a tool developers use. We are working on visualizing what steering looks like. Progress is being made
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Watching an agent edit the same file 16 times in a row is the perfect reminder. This is exactly why we built File City — so you can actually *see* what the agents are doing instead of just hoping.
Fernando@Principal_ADEJul 28
Cutting through the hype of what agents can do can be really hard. Watching an agent edit a file 16 times in a row should provide the grounding we need to remember these things are not that much better than us at this
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In honor of @JensenHuang joining X NVIDIA/NemoClaw as a File City. Structure, who built what, what shipped this week, and more.
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Explore NemoClaw more app.principal-ade.com/NVIDIA…
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Or browse more of NVIDIA’s open source projects on File City → app.principal-ade.com Search NVIDIA (or paste any github.com/NVIDIA link) to open the map.
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Fernando@Principal_ADEJul 24
First pass at animating commits in a codebase for a future spotify wrapped type feature @rbbydotdev
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Fernando@Principal_ADEJul 24
Closing in on 500 different repos visualized, here is a few of the more popular ones
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A new way to see your codebase. Drop a repo. See the city.
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Try it free app.principal-ade.com Paste any public GitHub repo in the search bar to open its File City.
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Or log in with GitHub to open your private repos too.
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Try it free app.principal-ade.com Paste any public GitHub repo in the search bar to open its File City.
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Or log in with GitHub to open your private repos too.
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See any codebase as a map. Structure, who built what, what shipped this week, and what a PR is changing.
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Try it free app.principal-ade.com Paste any public GitHub repo in the search bar to open its File City
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Or log in with GitHub to open your private repos too.
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Fernando@Principal_ADEJul 18
We are adding functionality to enable this package labeling to make the map more digestible and enable navigation along this axis
François Best
@fortysevenfxJul 1
When people say that "nuqs just works": this is why.
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Fernando@Principal_ADEJul 13
Anybody who has ever worked in java probably remembers the distinct flavor of verbosity the file paths can take. When you translate them to a treemap visualization they actually are very aesthetically pleasing! Here is the @springframework @springjuergen
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