Code review is broken at scale.

Your team ships faster every week. AI generates more code than ever. But reviewers still have the same hours in a day. Something has to give.

We built cubic to fix this. Teams at Resend, Cal.com, and n8n use it to maintain quality across their entire development lifecycle.

And now it's available directly from the Vercel Marketplace, which means millions of developers who already trust Vercel with their deployments can access it without friction.

Code review for complex codebases

cubic is built for teams that ship fast and don't want to choose between speed and quality. Where slowing down to review properly isn't an option.

Catching issues is table stakes. What actually matters is whether your team acts on the feedback. cubic learns your codebase and becomes a real part of your team.

• Leading accuracy: cubic catches subtle issues that slip past human review, with few false positives. Signal, not noise.

• Memory and learnings: Every review makes cubic smarter. cubic reads your team's comments, learns what your team cares about, and stops wasting time on what you don't.

• Custom agents: Your codebase has rules that generic linters can't express. Auth patterns, forbidden approaches, lessons learned from past incidents. Write them once, cubic enforces them everywhere.

• Senior reviewer knowledge: cubic watches your senior engineers review code and mimics their judgment. Over time, it flags what they would flag.

• Up-to-date documentation: cubic has access to current docs for your libraries and frameworks. No more suggestions based on deprecated APIs.

Beyond point-in-time PR reviews

Point-in-time code review isn't enough anymore. AI is writing more code than ever, and bugs can slip in anywhere. The future of software quality isn't just reviewing PRs. It's continuous checks across the entire codebase.

cubic lets you deploy thousands of agents to scan your codebase continuously, not just when someone opens a PR. Issues that would take a human reviewer hours to spot across a large repo get surfaced automatically.

• Codebase scans: Deploy thousands of agents to investigate your entire codebase continuously. Each agent can run for hours, going deep into files and patterns that quick PR reviews can't touch. Serious bugs and security vulnerabilities that have been sitting in your code for months get surfaced automatically.

• AI wiki: cubic builds a living knowledge base from what it learns about your system. Architecture decisions, module relationships, the context that usually lives in someone's head.

• Local CLI: Get feedback in your terminal before you push. Same analysis, same agents, no waiting for CI.

• Background agents: Instead of just flagging an issue, cubic can fix it. Opens a PR with the solution so you review the code instead of writing it.

• Live progress: When agents run, you see exactly what they're doing. The files they read, the decisions they make. Trust comes from visibility.

Get started

Connect cubic from the Vercel Marketplace and it starts reviewing PRs immediately. Unified billing, no separate accounts.

Install from the Vercel Marketplace: [link]

Questions? support@cubic.dev