Instant PR reviews: Cyrus comes to GitHub

The waiting is the most expensive part of shipping software. Not the code. The queue.

You know how this goes. You open a pull request, tag a reviewer, and... wait.

A day passes. You ping on Slack. Two days. You rebase because main moved ahead. Three days. The review finally lands, but you've already context-switched to the next thing. You barely remember why you made that decision.

Today, that changes.

@cyrusagent on any pull request

You can now @mention Cyrus directly on any GitHub pull request and get an instant, thorough code review.

This isn't a lint check. It's not a style guide enforcer. Cyrus reads your code the way a senior engineer reads code — understanding the full context of your PR and your repo, catching edge cases, questioning architectural trade-offs, and leaving concrete improvement suggestions.

Just tag @cyrusagent in a PR comment. That's it.

How it works

Mention-triggered reviews

Tag @cyrusagent in any PR comment or review comment. Cyrus validates the repository connection, verifies the commenter is authorized (organization member or repo owner), and replies directly on the PR with detailed, contextual feedback.

Automatic review responses

When reviewers request changes on a Cyrus-created PR, the agent automatically picks up the review and starts addressing the feedback — no @cyrusagent mention required. This works for both summary-level reviews and line-level comments. Cyrus reads the feedback, makes the fixes, and pushes the update.

What Cyrus catches

• Logic errors and edge cases — the bugs that slip through unit tests
• Architectural concerns — patterns that will cause problems at scale
• Security issues — injection risks, auth gaps, data exposure
• Performance implications — N+1 queries, unnecessary re-renders, memory leaks
• Concrete suggestions — not just "this could be better" but "here's how"

Setup takes 60 seconds

If you're already using Cyrus, the GitHub integration is ready to go. During onboarding, Cyrus handles OAuth linking and GitHub App installation automatically. No manual webhook configuration, no token juggling.

1. Install the Cyrus GitHub App on your repositories
2. Start tagging @cyrusagent on pull requests
3. That's it

For existing users, your repositories are already connected. Just start mentioning @cyrusagent in your PRs.

View full GitHub integration docs →

Why this matters

Code review is one of the highest-leverage activities in software development — and one of the most neglected. Not because teams don't value it, but because everyone is busy shipping their own work.

The result: PRs languish. Context gets lost. Merge conflicts pile up. And the cost of a three-day review cycle isn't just three days — it's the context switch back, the rebase, the re-review, and the morale hit of stalled work.

With Cyrus on GitHub, every PR gets reviewed within minutes. Your human reviewers can focus on the architectural decisions that need human judgment, while Cyrus handles the thorough, line-by-line review that catches the bugs.

What's next

This is Launch Week Day 2. Tomorrow, we're closing the loop between Slack and GitHub — what if you could kick off an entire workflow, from a Slack message to a shipped PR, without leaving the conversation?

Stay tuned.

If you're not yet using Cyrus, get started today and see how instant PR reviews can transform your team's velocity.