A powerful browser tools server for capturing and managing browser events, logs, and screenshots. This server works in conjunction with the Browser Tools Chrome Extension to provide comprehensive browser debugging capabilities.
- Console log capture
- Network request monitoring
- Screenshot capture
- Element selection tracking
- WebSocket real-time communication
- Configurable log limits and settings
- Lighthouse-powered accessibility, performance, SEO, and best practices audits
npx @agentdeskai/browser-tools-server
Or install globally:
npm install -g @agentdeskai/browser-tools-server
- Start the server:
npx @agentdeskai/browser-tools-server
-
The server will start on port 3025 by default
-
Install and enable the Browser Tools Chrome Extension
-
The server exposes the following endpoints:
-
/console-logs
- Get console logs -
/console-errors
- Get console errors -
/network-errors
- Get network error logs -
/network-success
- Get successful network requests -
/all-xhr
- Get all network requests -
/screenshot
- Capture screenshots -
/selected-element
- Get currently selected DOM element -
/accessibility-audit
- Run accessibility audit on current page -
/performance-audit
- Run performance audit on current page -
/seo-audit
- Run SEO audit on current page
-
GET /console-logs
- Returns recent console logs -
GET /console-errors
- Returns recent console errors -
GET /network-errors
- Returns recent network errors -
GET /network-success
- Returns recent successful network requests -
GET /all-xhr
- Returns all recent network requests -
GET /selected-element
- Returns the currently selected DOM element
-
POST /extension-log
- Receive logs from the extension -
POST /screenshot
- Capture and save screenshots -
POST /selected-element
- Update the selected element -
POST /wipelogs
- Clear all stored logs -
POST /accessibility-audit
- Run a WCAG-compliant accessibility audit on the current page -
POST /performance-audit
- Run a performance audit on the current page -
POST /seo-audit
- Run a SEO audit on the current page
The server provides Lighthouse-powered audit capabilities through four AI-optimized endpoints. These audits have been specifically tailored for AI consumption, with structured data, clear categorization, and smart prioritization.
All audit tools implement a "smart limit" approach to provide the most relevant information based on impact severity:
- Critical issues: No limit (all issues are shown)
- Serious issues: Up to 15 items per issue
- Moderate issues: Up to 10 items per issue
- Minor issues: Up to 3 items per issue
This ensures that the most important issues are always included in the response, while less important ones are limited to maintain a manageable response size for AI processing.
All audit responses follow a similar structure:
{
"metadata": {
"url": "https://example.com",
"timestamp": "2025-03-06T16:28:30.930Z",
"device": "desktop",
"lighthouseVersion": "11.7.1"
},
"report": {
"score": 88,
"audit_counts": {
"failed": 2,
"passed": 17,
"manual": 10,
"informative": 0,
"not_applicable": 42
}
// Audit-specific content
// ...
}
}
The accessibility audit evaluates web pages against WCAG standards, identifying issues that affect users with disabilities.
{
"metadata": {
"url": "https://example.com",
"timestamp": "2025-03-06T16:28:30.930Z",
"device": "desktop",
"lighthouseVersion": "11.7.1"
},
"report": {
"score": 88,
"audit_counts": {
"failed": 2,
"passed": 17,
"manual": 10,
"informative": 0,
"not_applicable": 42
},
"issues": [
{
"id": "meta-viewport",
"title": "`[user-scalable=\"no\"]` is used in the `<meta name=\"viewport\">` element or the `[maximum-scale]` attribute is less than 5.",
"impact": "critical",
"category": "a11y-best-practices",
"elements": [
{
"selector": "head > meta",
"snippet": "<meta name=\"viewport\" content=\"width=device-width,initial-scale=1,maximum-scale=1,user-scalable=0\">",
"label": "head > meta",
"issue_description": "Fix any of the following: user-scalable on <meta> tag disables zooming on mobile devices"
}
],
"score": 0
}
],
"categories": {
"a11y-navigation": { "score": 0, "issues_count": 0 },
"a11y-aria": { "score": 0, "issues_count": 1 },
"a11y-best-practices": { "score": 0, "issues_count": 1 }
},
"critical_elements": [
{
"selector": "head > meta",
"snippet": "<meta name=\"viewport\" content=\"width=device-width,initial-scale=1,maximum-scale=1,user-scalable=0\">",
"label": "head > meta",
"issue_description": "Fix any of the following: user-scalable on <meta> tag disables zooming on mobile devices"
}
],
"prioritized_recommendations": [
"Fix ARIA attributes and roles",
"Fix 1 issues in a11y-best-practices"
]
}
}
- Issues Categorized by Impact: Critical, serious, moderate, and minor
- Element-Specific Information: Selectors, snippets, and labels for affected elements
- Issue Categories: ARIA, navigation, color contrast, forms, keyboard access, etc.
- Critical Elements List: Quick access to the most serious issues
- Prioritized Recommendations: Actionable advice in order of importance
The performance audit analyzes page load speed, Core Web Vitals, and optimization opportunities.
{
"metadata": {
"url": "https://example.com",
"timestamp": "2025-03-06T16:27:44.900Z",
"device": "desktop",
"lighthouseVersion": "11.7.1"
},
"report": {
"score": 60,
"audit_counts": {
"failed": 11,
"passed": 21,
"manual": 0,
"informative": 20,
"not_applicable": 8
},
"metrics": [
{
"id": "lcp",
"score": 0,
"value_ms": 14149,
"passes_core_web_vital": false,
"element_selector": "div.heading > span",
"element_type": "text",
"element_content": "Welcome to Example"
},
{
"id": "fcp",
"score": 0.53,
"value_ms": 1542,
"passes_core_web_vital": false
},
{
"id": "si",
"score": 0,
"value_ms": 6883
},
{
"id": "tti",
"score": 0,
"value_ms": 14746
},
{
"id": "cls",
"score": 1,
"value_ms": 0.001,
"passes_core_web_vital": true
},
{
"id": "tbt",
"score": 1,
"value_ms": 43,
"passes_core_web_vital": true
}
],
"opportunities": [
{
"id": "render_blocking_resources",
"savings_ms": 1270,
"severity": "serious",
"resources": [
{
"url": "styles.css",
"savings_ms": 781
}
]
}
],
"page_stats": {
"total_size_kb": 2190,
"total_requests": 108,
"resource_counts": {
"js": 86,
"css": 1,
"img": 3,
"font": 3,
"other": 15
},
"third_party_size_kb": 2110,
"main_thread_blocking_time_ms": 693
},
"prioritized_recommendations": ["Improve Largest Contentful Paint (LCP)"]
}
}
- Core Web Vitals Analysis: LCP, FCP, CLS, TBT with pass/fail status
- Element Information for LCP: Identifies what's causing the largest contentful paint
- Optimization Opportunities: Specific actions to improve performance with estimated time savings
- Resource Breakdown: By type, size, and origin (first vs. third party)
- Main Thread Analysis: Blocking time metrics to identify JavaScript performance issues
- Resource-Specific Recommendations: For each optimization opportunity
The SEO audit checks search engine optimization best practices and identifies issues that could affect search ranking.
{
"metadata": {
"url": "https://example.com",
"timestamp": "2025-03-06T16:29:12.455Z",
"device": "desktop",
"lighthouseVersion": "11.7.1"
},
"report": {
"score": 91,
"audit_counts": {
"failed": 1,
"passed": 10,
"manual": 1,
"informative": 0,
"not_applicable": 3
},
"issues": [
{
"id": "is-crawlable",
"title": "Page is blocked from indexing",
"impact": "critical",
"category": "crawlability",
"score": 0
}
],
"categories": {
"content": { "score": 0, "issues_count": 0 },
"mobile": { "score": 0, "issues_count": 0 },
"crawlability": { "score": 0, "issues_count": 1 },
"other": { "score": 0, "issues_count": 0 }
},
"prioritized_recommendations": [
"Fix crawlability issues (1 issues): robots.txt, sitemaps, and redirects"
]
}
}
- Issues Categorized by Impact: Critical, serious, moderate, and minor
- SEO Categories: Content, mobile friendliness, crawlability
- Issue Details: Information about what's causing each SEO problem
- Prioritized Recommendations: Actionable advice in order of importance
The best practices audit evaluates adherence to web development best practices related to security, trust, user experience, and browser compatibility.
{
"metadata": {
"url": "https://example.com",
"timestamp": "2025-03-06T17:01:38.029Z",
"device": "desktop",
"lighthouseVersion": "11.7.1"
},
"report": {
"score": 74,
"audit_counts": {
"failed": 4,
"passed": 10,
"manual": 0,
"informative": 2,
"not_applicable": 1
},
"issues": [
{
"id": "deprecations",
"title": "Uses deprecated APIs",
"impact": "critical",
"category": "security",
"score": 0,
"details": [
{
"value": "UnloadHandler"
}
]
},
{
"id": "errors-in-console",
"title": "Browser errors were logged to the console",
"impact": "serious",
"category": "user-experience",
"score": 0,
"details": [
{
"source": "console.error",
"description": "ReferenceError: variable is not defined"
}
]
}
],
"categories": {
"security": { "score": 75, "issues_count": 1 },
"trust": { "score": 100, "issues_count": 0 },
"user-experience": { "score": 50, "issues_count": 1 },
"browser-compat": { "score": 100, "issues_count": 0 },
"other": { "score": 75, "issues_count": 2 }
},
"prioritized_recommendations": [
"Address 1 security issues: vulnerabilities, CSP, deprecations",
"Improve 1 user experience issues: console errors, user interactions"
]
}
}
- Issues Categorized by Impact: Critical, serious, moderate, and minor
- Best Practice Categories: Security, trust, user experience, browser compatibility
- Detailed Issue Information: Specific problems affecting best practices compliance
- Security Focus: Special attention to security vulnerabilities and deprecated APIs
- Prioritized Recommendations: Actionable advice in order of importance
MIT
A comprehensive browser automation service built on Puppeteer to provide reliable cross-platform browser control capabilities.
-
Cross-Platform Browser Support:
- Windows, macOS, and Linux support
- Chrome, Edge, Brave, and Firefox detection
- Fallback strategy for finding browser executables
-
Smart Browser Management:
- Singleton browser instance with automatic cleanup
- Connection retry mechanisms
- Temporary user data directories with cleanup
-
Rich Configuration Options:
- Custom browser paths
- Network condition emulation
- Device emulation (mobile, tablet, desktop)
- Resource blocking
- Cookies and headers customization
- Locale and timezone emulation