See What AI Agents See
Score any site's agent readiness, generate tool definitions from existing forms, and inspect what competitors have implemented. One click. Zero setup.
Google Ships an Inspector.
You Need an Analyst.
Google's Inspector lists tools and lets you test them. We start there — then go much further.
Google's tool tells you what's on the page. Ours tells you what to do about it.
One Number. Any Website. Instant.
The Agent Readiness Score — from 0 (invisible to agents) to 100 (fully optimized). Click the extension on any page. Get your score in under 3 seconds.
Proper tool registration, valid JSON Schema, correct attribute usage
Specific action verbs, clear parameter descriptions, best-practice framing
requestUserInteraction() on destructive tools, no injection risks
Form-to-tool coverage, required params marked, full user journey
Five Superpowers. One Extension.
Everything Google's Inspector does. Plus five things it doesn't.
Deep Inspect
See every tool, both APIs, full schema
Not just a list of tools — a complete X-ray of the site's agent surface. The extension detects and parses both WebMCP implementation approaches.
- 01Imperative API: Captures tool names, descriptions, full inputSchema, and MCP annotations from registerTool()
- 02Declarative API: Scans DOM for toolname, tooldescription attributes and renders alongside imperative tools
- 03Context tracking: Monitors provideContext() and clearContext() calls in real-time as you navigate
- 04Click any tool to see full JSON Schema, description quality indicators, and parameter breakdown
"Is this site using WebMCP?" → Open DevTools, search through JS, check DOM attributes...
Click extension. Everything visible in one panel — tools, schemas, context state, annotations.
From Zero to Agent-Ready
Follow along as we make a travel booking site agent-ready using nothing but the browser extension.
The Baseline Scan
Open your travel booking site on localhost:3000. Click the WebMCP extension icon. No login, no setup.
One-Click Tool Generation
Click "Generate Tool" on the flight search form. AI analyzes the form structure and generates a complete tool definition.
Export, Paste, Verify
Export as registerTool() JavaScript. Paste into your app. Reload and re-scan to see your score climb.
Test With an Agent
Click any registered tool → "Test Execution" tab. Type a natural language prompt and watch the agent interpret your tool.
Competitive Check
Visit competitor-airlines.com. Click the extension. See their entire agent strategy and exactly where you need to catch up.
Adapts to Every Scenario
The extension adapts its interface based on what it finds on the page.
Not Sure Where to Start?
The Co-Pilot Knows.
Analyzes any page and gives you a prioritized implementation roadmap — what tools to create, in what order, with specific recommendations.
Analyzes Page Context
Reads the page purpose, identifies the user journey, and maps interactive elements to potential agent actions.
Prioritizes by Impact
Ranks opportunities by user value, implementation effort, score impact, and competitive gap.
Generates a Roadmap
Produces a prioritized list of tools to create, with effort estimates and projected score gains.
search_flights
+22 pointsCore user action. Most agents try this first. Your competitor has this at 91.
book_flight
+15 pointsRevenue-generating action. Without it, agents can search but can't convert.
check_flight_status
+8 pointsYour New Favorite DevTools Panel
A dedicated panel in Chrome DevTools — real-time monitoring, debugging, and testing for WebMCP tools, right alongside Elements, Console, and Network.
Breakpoints
Pause on agent tool invocation, inspect parameters before execution
Network Tags
Every tool-initiated request tagged for filtering in the Network panel
Console Prefix
Tool registrations and execution results logged with filterable prefix
CSS States
Inspect pseudo-class application during active agent interaction
Transparent by Design
Read the minimum needed to help you, and nothing more. Here's exactly what that means.
What the Extension Reads
- WebMCP tool registrations (tool names, descriptions, schemas)
- DOM attributes (toolname, tooldescription on HTML elements)
- provideContext() / clearContext() calls and their payloads
- Form structures (input types, labels, required flags) for AI generation
What the Extension Never Reads
- Passwords, authentication tokens, or session cookies
- Form input values (what users type into fields)
- Network request/response bodies or API keys
- localStorage, sessionStorage, or IndexedDB contents
- Personal browsing history or open tab information
- Any data from other extensions or DevTools panels
Without Account
100% Local- •All scanning runs in the browser — no server calls
- •Scores computed client-side using open scoring algorithm
- •Generated tools stored in extension local storage only
- •Zero telemetry, zero analytics, zero tracking pixels
With Account (Optional)
Sync Summary Only- •Score + tool count synced to dashboard (not raw schemas)
- •Historical trends for score tracking over time
- •Team sharing: aggregated metrics, never raw page data
- •All synced data deletable from dashboard at any time
Permissions Explained
Open-Source Core
Scanning engine published on GitHub. Read every line.
Manifest V3
Latest Chrome extension platform. No persistent background access.
No Background Scanning
Only activates when you click. Never scans passively.
Minimal Permissions
activeTab + scripting only. No broad host access.
Free Core. More With an Account.
The core extension is fully functional without an account. Connect one to unlock AI generation, history, and team features.
Standalone
No account required
- Instant Agent Readiness Score (0-100)
- Deep tool inspection (both APIs)
- Security vulnerability scanning
- Competitor site analysis
- Chrome DevTools panel
- AI tool generation from forms
- Score history & trends
- Dashboard sync
- Team sharing
- CI/CD webhook integration
Free Account
Connect for more power
- Everything in Standalone
- AI tool generation (5/month)
- Score history (last 30 days)
- Dashboard sync (view scores online)
- Export tools as code snippets
- Basic AI Co-Pilot recommendations
- Unlimited AI generations
- Team sharing & collaboration
- Watchlist monitoring
- CI/CD webhook integration
Pro Account
For teams & power users
- Everything in Free Account
- Unlimited AI tool generation
- Full score history (unlimited)
- Competitor watchlists (auto-monitor)
- Team sharing & collaboration
- CI/CD webhook (break build on score drop)
- Priority AI Co-Pilot (deeper analysis)
- Custom scoring rules
- Slack/Teams notifications
- Dedicated support channel
All tiers include the full Chrome extension. Your data, your browser, your control. Upgrade or downgrade at any time — no lock-in.
Questions Developers Actually Ask
Straight answers. No marketing fluff.
Google's inspector is a basic diagnostic tool — it reads what's already there. WebMCP is a complete development environment. It scores your implementation, generates tools from forms using AI, scans for security vulnerabilities, provides competitive intelligence, and gives you a DevTools panel for real-time debugging. Think of it as the difference between a thermometer and a full medical lab.
Yes — and that's one of the most powerful features. The extension scans every <form> on any page, detects interactive elements, and offers one-click AI tool generation. You can use it to scope out implementation even before writing a single line of WebMCP code. It also works on competitor sites to reveal their agent strategy.
Without an account: nothing leaves your browser. All scanning, scoring, and analysis runs 100% client-side. With a free account: only aggregated scores and tool counts sync to the dashboard — never raw schemas, page content, or browsing data. See our full Privacy section above for the complete breakdown.
The AI analyzes form structure (input types, labels, required attributes, select options), surrounding page context (headings, descriptions), and WebMCP best practices to generate tool definitions. For standard forms (search, contact, checkout), accuracy is very high — you'll typically only need minor description tweaks. Complex multi-step flows may need more manual refinement.
The Chrome version is available now. Edge support (Chromium-based, so nearly identical) is coming in Q2 2026. Firefox support is on the roadmap for Q3 2026. The core scanning engine is browser-agnostic — it's the extension APIs that differ.
The score is a weighted composite across four dimensions: Implementation Quality (30%) — proper tool registration, valid JSON Schema, correct attribute usage. Description Quality (25%) — specific action verbs, clear parameter descriptions, best-practice framing. Security Posture (25%) — requestUserInteraction() on destructive tools, no injection risks. Completeness (20%) — form-to-tool coverage, required params marked, full user journey coverage.
No. The extension only activates when you click its icon — it never runs in the background or injects scripts passively. When activated, the scan typically completes in under 500ms. The DevTools panel uses the same performance-conscious APIs as Chrome's own inspector tools.
Yes. The extension works on any public website. When you visit a competitor's site and click the extension, it reads their publicly-exposed WebMCP tools — the same information any AI agent would see. No special access is needed, no requests are made to their servers beyond normal page loading, and they have no way to detect the scan.
No. The standalone extension is fully functional without any account. You get scoring, inspection, security scanning, competitive analysis, and the DevTools panel — all free, all local. An account only unlocks AI generation, history tracking, dashboard sync, and team features.
Start Inspecting
WebMCP is available in Chrome 146 behind a flag. Install the extension to inspect tool definitions, score agent readiness, and generate tools from any site.
Open-source core · Manifest V3 · No background scanning · Privacy-first · No account required