Earnin scales regulated code review with CodeRabbit after choosing buy over build
Earnin chose to buy CodeRabbit rather than build its own review tool and uses it to scale code review in a regulated environment, according to the official case study.
- Agent or tool
- CodeRabbit
- Topic
- Software Development
- Reported on
- Case study (CodeRabbit)
- Added
- 2026-11-14
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 221 sightings filed under Software Development on Agent Sightings (number 34 by interest), and one of 6 involving CodeRabbit.
How you could try it
Here is a reusable prompt, written by us in our own words, that captures the task. Paste it into CodeRabbit or any similar agent and adjust the details to your situation.
I want a coding agent to take on work like this across our repositories, show its plan, and wait for review before anything merges. The tool in the source case was CodeRabbit.
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 Case study (CodeRabbit): https://coderabbit.ai/case-studies/earnin-scales-regulated-code-review-with-cod…. Our summary is a paraphrase; details are in the source.
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