AI Code Review Agent

Your senior engineer
who never sleeps

Stackline watches your GitHub repos. When a PR opens, it reviews the diff, explains its reasoning, flags what matters, and sends you a daily report of everything it caught.

PR #847 — auth/refactor-roles open
async function getUserRoles(userId: string) {
const user = await db.users.findById(userId);
- return user.roles || [];
+ return user.roles ?? [];
}
Stackline

Solid fix — nullish coalescing handles both null and undefined where ||[] would treat 0 or "" as falsy. No blockers here.

2 PRs reviewed today. 1 blocker found (see below), 5 suggestions, 2 nitpicks.

What it does

Not a bot that decorates your diff. An employee that works your review queue.

Reviews every PR, automatically

Connects to your GitHub repos. Every pull request opened or updated gets a full review — no human triggered, no CI step required.

#852 feat: cache user sessions approved
#851 fix: auth token refresh 2 changes
#850 chore: bump deps approved

Explains its reasoning

Every comment comes with context. Why this is a problem, what could go wrong, and what a better version looks like. Not just "consider refactoring."

Learns from your codebase

The more PRs it reviews, the sharper it gets. It reads your patterns, your conventions, your definitions of done.

Daily progress report

Every morning, a plain summary: how many PRs merged, what it flagged, what your team shipped. No dashboard to check — it arrives in your inbox.

How it works

01

Connect your GitHub

Install the Stackline GitHub App on your organization or specific repos. Takes under two minutes. No YAML, no webhook config, no CI changes.

02

It watches and reviews

Every PR automatically gets a structured review — inline comments on specific lines, a summary at the top, and a severity rating on every finding.

03

You ship better code

Reviewers get a head start. Senior devs stop drowning in nitpicks. Your team closes PRs faster and ships with more confidence.

"We built AI that writes code. Then we forgot to build the AI that reviews it."

The coding agent wave gave us 3x more code output per developer. But the review process didn't change at all. One person reads the diff, flags what they can, and approves. That bottleneck is now the whole system.

Stackline is the first reviewer your team never has to ask. It shows up on every PR, knows your codebase, and flags what's actually wrong — not just what looks different.

The review gap is killing your velocity.

Every day a PR sits open, your team is slower, your context is colder, and your users are waiting. Stackline closes that gap — not with a chatbot, but with a working employee that reviews every change your team makes.