Built for frontend teams

Code review
with full context.

AI agents explore multiple solutions to every PR problem, show you side-by-side trade-offs, and iterate with you until the best option ships — not just comments, real working alternatives.

More than a GitHub bot.
A multi-agent review system.

undiff appears in your PR like a GitHub bot, but under the hood multiple specialized agents analyze features, coverage, security, and visual changes in parallel.

Multi-Agent Parallel Review

Instead of one AI chatbot, undiff spawns specialized agents simultaneously — one for feature logic, one for test coverage, one for security, one for visual regressions. Each returns focused, actionable feedback.

feature-agent
coverage-agent
security-agent
visual-agent

Visual Diff Screenshots

For UI changes, see before/after screenshots from your real app — not just code. Pixel-level comparison of what actually changed in the browser.

BEFORE
AFTER

Feature-Grouped Changes

See changes organized by feature, not by file. Understand what each PR actually does at a product level — "added dark mode toggle" instead of "modified 14 files".

Security Scanner

Dedicated agent for XSS vectors, insecure dependencies, leaked secrets, and OWASP patterns — tuned for frontend codebases.

src/components/UserInput.tsx
- innerHTML={userContent}
+ {sanitize(userContent)}
⚠ XSS: unsanitized user input in DOM
1

Open a PR

Push code as usual. undiff hooks into your GitHub workflow automatically.

2

Agents Spawn

Multiple AI agents analyze your changes in parallel — features, coverage, security, visual.

3

Contextual Report

Results organized by context, not files. Visual diffs, coverage maps, security flags — all inline.

4

Ship Confidently

Address findings, re-run agents, merge. Every PR ships with full context.

Beyond single-agent review.

Other tools chat about code. undiff understands it in context.

Feature
undiff
Others
Multi-agent parallel review
Visual diff screenshots
Feature-grouped changes
Frontend-specialized
generic
Coverage analysis
basic
Security scanning
basic
Context views (feature/cov/sec)

Don’t debate in comments.
Simulate options, compare outcomes.

Inside the undiff GitHub bot on your PR, propose multiple implementation options for functional or visual improvements. Each option runs in its own isolated environment, executes tests, generates visual output, and returns a side-by-side report with clear pros and cons.

Side-by-Side Visual Result

Current PR branch
Option A environment output

Automated Review Verdict

Stop reviewing files.
Start reviewing features.

Join the waitlist — be first to get access when we launch.