0github

Dev tools

code review

SHOW HN2025

265points
68comments
#213of 3,837 in 2025
Top 6%of 2025 by points

How HN took it

DebatedReal support and real criticism

11 positive, 15 neutral or asking, 2 mixed, 16 critical, out of 44 comments about the project. Thread score -0.09.

Idea: 8 for, 5 againstExecution: 0 for, 3 againstPrivacy: 0 for, 2 againstPerformance: 0 for, 2 againstPricing: 1 for, 0 against

The thread, comment by comment

Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.

positive neutral or mixed critical about another commenter or something else the maker

What HN said

What people liked

  • Useful for spotting where to look in large PRs

    From 3 comments
    • This makes reading long PRs not instantly LGTM… now the heatmap guides my eyes so I know where to look.
      austinwang115 on HN
    • This is something I have found missing in my current workflow when reviewing PR's. Particularly in the age of large AI generated PR's. I think most reviewers do this to some…
      cdiamand on HN
    • Very, very useful. I'll give it a try. Thanks for sharing!
      antback on HN

Objections

  • Sending code to an LLM is expensive and energy-heavy

    From 2 comments
    • It’s an interesting direction, but feels pretty expensive for what might still be a guess at what matters. I’m not sure an LLM can really capture project-specific context yet…
      kburman on HN
    • > Under the hood, we clone the repo into a VM, spin up gpt-5-codex for every diff, and ask it to output a JSON data structure that we parse into a colored heatmap. Wait, you're…
      isodev on HN
  • GitHub sign-in requirement and permissions scare users

    From 2 comments
    • Why does it require signing and granting you full access to act as me on Github to use? cmux-agent requires access to your Github account: ``` Verify your GitHub identity Know…
      smcleod on HN
    • It's when you first start the app it asks you to login using GitHub before you see anything else.
      smcleod on HN
  • Domain 0github.com may trigger trademark issues

    From 2 comments
    • You’re not going to be able to keep the domain name 0github.com for too long. I’d suggest you start finding a new one immediately.
      otterley on HN
    • Because it violates GitHub’s trademark. I expect them to send the author a cease and desist notice; and if the author is unresponsive or challenges the notice, GitHub will almost…
      otterley on HN

Requests

  • Configurable colors and gradient

    From 2 comments
    • > https://0github.com/stack-auth/stack-auth/pull/988 Very fun to see my own PR on Hacker News! This looks great. I'm probably gonna keep the threshold set to 0%, so a bit more…
      n2d4 on HN
    • colorbrewer has proven high contrast gradients and also color blind options. a cli command with two options, console (color) and HTML opens all doors, right?
      froh on HN
  • Legend to filter by category instead of slider

    From 2 comments
    • This is very cool and I could see it being really useful especially for those giant PRs. I'd prefer it if instead of the slider I could just click the different heatmap colors…
      timenotwasted on HN
    • I was referring to something more akin to a legend like you have in the examples "(examples: hard-coded secret, weird crypto mode, gnarly logic)." where I could click "hard-coded…
      timenotwasted on HN
  • Dark theme support

    From 1 comment
    • This is cool! Please add a dark theme and respect `prefers-color-scheme: dark` :)
      HellsMaddy on HN
  • CLI or IDE integration for pre-PR review

    From 2 comments
    • Yeah we definitely want to make the gradient and colors configurable. What form factor would make the most sense for you? Maybe a a cli command that renders the diff in cli or…
      lawrencechen on HN
    • Either would work, I think. How I do it right now is that I let AI edit automatically, but then check the diff in Cursor before I stage my Git changes. May be different for others.
      n2d4 on HN

Questions

  • How to opt out of having code reviewed by this tool

    From 1 comment
    • How do I opt out of this tool? I do not want anyone reviewing my code or projects to use or engage with it and it is explicitly against the TOS of those projects. It would be…
      fao_ on HN
  • Whether it uses a token-distance measure

    From 1 comment
    • I tried it on a low-complexity Rust PR I worked on a few months back and it did a pretty good job. I'd probably change where the highlights live (for example x.y.z() -> x.w.z()…
      mmastrac on HN

Alternatives named

  • Salience text highlighting tool

    From 1 comment
    • Reminds me of this one, highlighting for text https://github.com/mattneary/salience
      383toast on HN
  • Sentry-style stack-trace correlation

    From 1 comment
    • For the correlation idea, you might take a look at how Sentry does it, they rely mostly on stack traces, error messages, and pattern matching to map issues back to code areas.…
      kburman on HN

Category, keywords, summaries and labels on this page were made by AI (Thread Reader v2) and not checked by hand. Each point links to the comments it came from.

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