Agent Sightings Real agent use cases

Write, review and document code across a product's PRs

One practitioner notes that according to founders, Devin is responsible for handling all ChatPRD PRs and is the top contributor to Gumroad's merged PRs, which includes over 1,500 PRs.

Agent or tool
Devin
Topic
Software Development
Reported on
Lenny's Newsletter
Added
2026-10-15

Why it matters

Coding agents are moving from autocomplete to doing whole tasks: reading a codebase, making a plan and changing many files. This case is a concrete example of where that works in practice. It is one of 106 sightings filed under Software Development on Agent Sightings (number 16 by interest), and one of 20 involving Devin.

How you could try it

Here is a reusable prompt, written by us in our own words, that captures the task. Paste it into Devin or any similar agent and adjust the details to your situation.

In this repo, write, review and document code across a product's PRs. Read relevant code, apply a minimal patch, run available checks, and summarize the diff. Stop before merge or deploy.

The prompt breaks down into 3 steps you can check as the agent works:

  1. In this repo, write, review and document code across a product's PRs.
  2. Read relevant code, apply a minimal patch, run available checks, and summarize the diff.
  3. Stop before merge or deploy.

Tip: Work on a fresh branch, ask for a plan before edits, and review the diff and test results before merging.

Source

Read the original first-hand account on Lenny's Newsletter: https://www.lennysnewsletter.com/p/a-free-year-of-devin-the-worlds-first. Our summary is a paraphrase; details are in the source.

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