AI-powered QA
for your frontend.

Whether you're shipping AI-generated UI or hand-crafted code, NeuralDiff verifies every page matches your team's standards — design quality, accessibility, layout, permissions, and intent — so nothing ships that shouldn't — while keeping you and your team fast.

Get Started Free See How It Works

$npx @neuraldiff/daemon

NeuralDiff QA dashboard showing findings, pages, and project navigation

Visual bugs ship to production every day.

Every code change can break something visual. Your team catches the same spacing, layout, and color issues sprint after sprint. Manual review doesn't scale.

73%

of AI-generated UI changes require visual corrections

3.2x

the same visual feedback given repeatedly across sprints

tools that learn from your corrections to prevent repeats

A QA system that gets smarter over time.

Not another pixel-diffing tool. An intelligent system trained on your team's design decisions.

🧠

Learns From Corrections

Fix a visual issue once and NeuralDiff remembers. Every correction becomes a rule your team never has to repeat.

👥

Per-Team Intelligence

No universal design rules. NeuralDiff builds a model from your team's actual decisions — your spacing, your palette, your patterns.

🤖

AI Agent Native

Built as an MCP server for Claude Code, Cursor, and other AI tools. Your agent checks rules before generating and verifies output after.

⚡

Sub-Second Feedback

The daemon watches your UI in real-time. Instant violation detection against learned standards — no CI wait, no context switch.

🔐

Auth-Aware Crawling

Configure login credentials and NeuralDiff crawls authenticated pages automatically. Test what your users actually see.

🎨

Design Analysis

Understands what changed — font size, button color, layout shift — and how severe it is. Semantic diffs, not pixel noise.

Up and running in minutes.

Three steps. No config files. No CI setup required.

Step 1 — Install

$ npx @neuraldiff/daemon

🔥 NeuralDiff daemon running at localhost:7878
📸 Browser ready — Chromium
⚡ MCP server connected (stdio)

# Add to your .mcp.json:
{
  "mcpServers": {
    "neuraldiff": {
      "command": "npx",
      "args": ["@neuraldiff/daemon"]
    }
  }
}

Step 2 — Run QA

🔍 Crawling http://localhost:3000
   Auto-discovering routes...

  /            ✓  320ms   landing
  /dashboard   ✓  410ms   dashboard
  /settings    ✓  290ms   form
  /login       ✓  180ms   auth
  ... 12 more pages found

📊 Running checks (61 pages)
  ✓ Contrast · Touch targets · Spacing
  ✓ Alt text · Overflow · Typography

⚠ 23 findings across 8 pages

Step 3 — Review

⚠ /settings — 5 findings

  [high] Touch target < 44px
    button.save-btn (38x32px)

  [medium] Contrast ratio 3.1:1
    .label-text on .card-bg
    WCAG AA requires 4.5:1

  [low] Spacing inconsistency
    gap varies: 16px, 12px, 16px

→ Open in daemon UI: localhost:7878
→ Export to GitHub Issues
→ Export to Linear

Start free. Scale when you're ready.

Local analysis is always free. Cloud features unlock team collaboration and shared intelligence.

🚀

Free

$0/mo

Local analysis, unlimited

Local daemon + SDK
MCP server for AI agents
Local knowledge base
500 cloud checks/month

Get Started

Team

$29/mo

Per seat, billed monthly

Everything in Free
Team-shared learned rules
Stakeholder review UI
CI/CD visual checks
Auth-aware crawling

Start Free Trial

🏢

Business

$99/mo