Octopus now reviews GitLab merge requestsTry It
Reviews for open source projectsLearn more

Review every PR
with repo context.

Octopus indexes your codebase, applies team standards,
and leaves source-backed comments with severity on every pull request.

Get Started FreeView on GitHub
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Code Chunks
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Findings
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PR Reviews
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Repositories
How it works

Three steps to better reviews

Connect your repos, and Octopus starts reviewing automatically.

01

Connect repositories

Connect your source provider and choose which repositories Octopus should monitor.

GitHubLiveBitbucketLiveGitLabLiveGiteaPlanned
02

AI Learns Your Code

Octopus indexes your codebase, understands patterns and architecture.

03

Reviews on Autopilot

Every new PR gets an instant, context-aware review automatically.

Install the CLI

Review PRs, chat with your codebase, and run AI agents from your terminal.

# Works on macOS & Linux. Installs everything.

$curl -fsSL https://octopus-review.ai/install.sh | bash

Works on macOS, Windows & Linux. The one-liner installs Node.js and everything else for you.

View full CLI documentation
Features

Review with context,
not noise.

Pick a workflow and see how Octopus keeps chat, reviews, standards, and repo context in one calm loop.

Workspace

Everything connected

Live

RAG Chat

Ask your codebase

auth-service
3 sources
Source-backed
answers point to real code
Every PR
reviews start automatically
Rules synced
team standards stay aligned
Open Source

Fully open source,
built in the open

100% open source under the MIT license. Inspect the code, self-host on your own infrastructure, or contribute.

Core codebase goes public on March 23, 2026 — 15:00 UTC

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MIT Licensed

Use it however you want — personal, commercial, or enterprise.

Community Driven

PRs welcome. Report bugs, request features, or build integrations.

Self-Host Ready

Deploy on your own servers. Your code never leaves your infrastructure.

Star us on GitHub
New · Open Source Program

Free, unlimited reviews
for open source projects

If your repository is public and OSI-licensed, Octopus reviews every pull request — forever, on us. No credit card, no monthly quota. Maintainers deserve great tooling.

  • Unlimited PR reviews on every public repo
  • One-file setup with a GitHub Action
  • Source-backed inline comments with severity levels
Learn moreGitHub Marketplace
.github/workflows/octopus.yml
name: Octopus Review
on:
  pull_request:
    types: [opened, synchronize]

permissions:
  contents: read
  pull-requests: write

jobs:
  review:
    runs-on: ubuntu-latest
    steps:
      - uses: octopusreview/action@v1
Blog

From the blog

Engineering insights and lessons from building Octopus.

Engineers Pick the Smaller PR. AI Ones Wait 5x Longer.

Engineers avoid AI-generated PRs 5x longer than human ones. Here's why context gaps are killing your cycle time—and how to fix it.

Octopus Team·

What Adding GitLab Support Taught Us About Code Review

Shipping GitLab support revealed surprising complexity: SHA-anchored comments, discussion-based reviews, and unexpected demand for self-hosted, air-gapped deployments.

Octopus Team·

Your Team's Rules Live in Three Heads. AI Has None.

Catch costly PR mistakes before they happen. Learn how codified team standards in AI code review cut onboarding time and hidden productivity losses.

Octopus Team·
View all posts
FAQ

Frequently asked questions

Quick answers to the most common questions about Octopus.

What is Octopus?
Octopus is an AI-powered code review tool that connects to GitHub and Bitbucket, indexes your codebase for deep context, and automatically reviews every pull request — posting findings as inline comments with severity levels.
How does the automated review work?
When a pull request is opened, Octopus fetches the diff, retrieves relevant context from your indexed codebase using vector search, and sends it to an LLM (Claude or OpenAI) for analysis. Findings are posted directly on the PR with severity ratings: Critical, Major, Minor, Suggestion, and Tip.
Which programming languages are supported?
Octopus is language-agnostic. It reviews any text-based code file — TypeScript, Python, Go, Rust, Java, C#, Ruby, PHP, Swift, Kotlin, and more. Since it uses LLMs for analysis, it understands the semantics and patterns of virtually any language.
Is my source code safe?
Yes. Your code is processed in-memory and never stored permanently. Only vector embeddings are persisted for search. You can also self-host Octopus on your own infrastructure so your code never leaves your servers.
Does Octopus replace human reviewers?
No. Octopus augments your team's review process. It catches bugs, security issues, and style inconsistencies so your human reviewers can focus on architecture, design decisions, and business logic.
Is Octopus free to use?
Yes. Octopus is open source under the MIT license and free to self-host. The cloud service includes free credits to get started, with a credit-based model for continued use. You can also bring your own API keys to use your existing AI provider billing.
View all FAQsCompare with other tools

Ready to transform your
code review workflow?

Open source, free forever. Set up in under 2 minutes.

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