PR Lens is a new way to look at code. It draws animated architecture and data flow diagrams of any codebase and every pull request, so you see the change before you read a single line of code. It runs as a GitHub Action, on the CLI, or as a skill for your coding agent. Open source under MIT.
Agents write more code every week, but we still have to understand it, and reading it line by line is no longer an efficient way to do that.
We need new ways to look at code.
What if reading code was visual? A few hundred lines a minute, leaving your attention for the part that's critical: the mental model of the system you maintain, its architecture, how it evolves, and how data moves through it?
This is why we built a custom renderer for agent-written diffs.
Every pull request comes with an animated architecture and data flow diagram. Changes, additions and removals are colour-coded, and it moves, so you watch a request travel through the system rather than a wall of diff.
It's open source under MIT, works with any model you bring, and runs as a GitHub Action, on the CLI, or as a skill for your coding agent. The repo is here: github.com/coldteadotai/pr-lens
It takes a minute to run locally. Try this prompt: "Explain the codebase or the last change to me using pr lens". Send feedback :)
About PR Lens by Coldtea.ai on Product Hunt
“See code through a new lens”
PR Lens by Coldtea.ai launched on Product Hunt on September 7th, 2026 and earned 0 upvotes and 2 comments, placing #160 on the daily leaderboard. PR Lens is a new way to look at code. It draws animated architecture and data flow diagrams of any codebase and every pull request, so you see the change before you read a single line of code. It runs as a GitHub Action, on the CLI, or as a skill for your coding agent. Open source under MIT.
On the analytics side, PR Lens by Coldtea.ai competes within Open Source, Software Engineering, Developer Tools and GitHub — topics that collectively have 672k followers on Product Hunt. The dashboard above tracks how PR Lens by Coldtea.ai performed against the three products that launched closest to it on the same day.
Who hunted PR Lens by Coldtea.ai?
PR Lens by Coldtea.ai was hunted by fmerian. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Reviews
PR Lens by Coldtea.ai has received 3 reviews on Product Hunt with an average rating of 4.67/5. Read all reviews on Product Hunt.
For a complete overview of PR Lens by Coldtea.ai including community comment highlights and product details, visit the product overview.
fmerian
Hi PH,
Agents write more code every week, but we still have to understand it, and reading it line by line is no longer an efficient way to do that.
We need new ways to look at code.
What if reading code was visual? A few hundred lines a minute, leaving your attention for the part that's critical: the mental model of the system you maintain, its architecture, how it evolves, and how data moves through it?
This is why we built a custom renderer for agent-written diffs.
Every pull request comes with an animated architecture and data flow diagram. Changes, additions and removals are colour-coded, and it moves, so you watch a request travel through the system rather than a wall of diff.
It's open source under MIT, works with any model you bring, and runs as a GitHub Action, on the CLI, or as a skill for your coding agent. The repo is here: github.com/coldteadotai/pr-lens
I wrote about the reasoning and the design here: reducing cognitive load in AI-generated PRs
PR Lens is built by the team at Coldtea.
It takes a minute to run locally. Try this prompt: "Explain the codebase or the last change to me using pr lens". Send feedback :)