{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"npm_npm-puppeteer-mcp-server","slug":"npm-puppeteer-mcp-server","name":"puppeteer-mcp-server","type":"mcp","url":"https://www.npmjs.com/package/puppeteer-mcp-server","page_url":"https://unfragile.ai/npm-puppeteer-mcp-server","categories":["mcp-servers"],"tags":[],"pricing":{"model":"open_source","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"npm_npm-puppeteer-mcp-server__cap_0","uri":"capability://tool.use.integration.headless.browser.automation.via.mcp","name":"headless-browser-automation-via-mcp","description":"Exposes Puppeteer's browser automation capabilities through the Model Context Protocol, allowing LLM agents and MCP clients to control a headless Chrome/Chromium instance via standardized MCP tool calls. Implements a server that translates MCP requests into Puppeteer API calls, managing browser lifecycle, page navigation, and DOM interaction through a unified interface.","intents":["I want my LLM agent to navigate websites and extract data without writing custom browser integration code","I need to automate multi-step web interactions (login, form filling, clicking) triggered by an AI model","I want to run browser automation as a service that any MCP-compatible client can call"],"best_for":["AI engineers building LLM agents that need web interaction capabilities","Teams integrating browser automation into Claude Desktop or other MCP clients","Developers prototyping web scraping or testing workflows driven by language models"],"limitations":["Experimental status — API surface and stability not guaranteed across versions","Single browser instance per server — concurrent requests may queue or conflict if not properly managed","No built-in session persistence — browser state resets between server restarts","Requires Chromium/Chrome binary on the system — adds ~100MB+ disk footprint and startup latency"],"requires":["Node.js 16+ (for MCP server runtime)","Puppeteer 19.0+ (npm dependency)","Chrome or Chromium browser binary (auto-downloaded by Puppeteer or system-provided)","MCP client implementation (Claude Desktop, custom Node.js client, etc.)"],"input_types":["MCP tool call with URL string","CSS/XPath selectors as strings","JavaScript code snippets for page evaluation","Form data as key-value objects"],"output_types":["HTML page content as string","Extracted DOM text/attributes as JSON","Screenshot data (base64 or file path)","Navigation/interaction status as structured response"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_1","uri":"capability://automation.workflow.page.navigation.and.content.retrieval","name":"page-navigation-and-content-retrieval","description":"Implements MCP tools for navigating to URLs, waiting for page load states, and retrieving rendered HTML/text content. Uses Puppeteer's page.goto() with configurable wait conditions (networkidle, domcontentloaded) and exposes page.content() to return fully-rendered DOM as string, enabling LLM agents to browse and read web pages.","intents":["I want my agent to visit a URL and get the rendered HTML to analyze or extract data","I need to wait for dynamic content to load before proceeding with the next action","I want to retrieve plain text from a webpage for summarization or question-answering"],"best_for":["Web scraping workflows where LLMs need to read and understand page content","Research agents that browse multiple pages and synthesize information","Testing automation where agents verify page content after navigation"],"limitations":["No built-in JavaScript execution context visibility — agent cannot directly inspect network requests or console logs","Wait conditions (networkidle) may timeout on pages with long-polling or streaming connections","Large pages (>10MB HTML) may cause memory pressure or slow serialization to string","No cookie/session management exposed — each navigation starts fresh unless manually managed"],"requires":["Valid HTTP/HTTPS URL","Network connectivity from the server","Puppeteer page instance (managed by server)"],"input_types":["URL string (http/https)","Wait condition enum (networkidle0, networkidle2, domcontentloaded, load)","Timeout in milliseconds"],"output_types":["HTML string (full DOM)","Plain text string (extracted via innerText or similar)","Status object with URL, title, navigation timing"],"categories":["automation-workflow","search-retrieval"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_10","uri":"capability://safety.moderation.error.handling.and.page.crash.recovery","name":"error-handling-and-page-crash-recovery","description":"Implements error handling for browser crashes, page errors, and navigation failures, exposing error information through MCP responses. Monitors page console errors and crashes using Puppeteer's error event listeners, allowing agents to detect and respond to page failures gracefully.","intents":["I want my agent to detect if the page has crashed and recover","I need to know if a page navigation failed and why","I want to capture console errors for debugging automation failures"],"best_for":["Robust automation workflows that need to handle failures gracefully","Testing workflows that verify error handling and recovery","Debugging complex automation failures"],"limitations":["Error detection is reactive — agent must check for errors after operations, not prevent them","No automatic recovery — agent must implement retry logic","Console error capture may be noisy — not all console errors indicate real failures","Browser crash detection may have latency — agent may not immediately know browser is dead"],"requires":["Page must be loaded or in process of loading","Error event listeners must be registered"],"input_types":[],"output_types":["Error message string","Error type (navigation, crash, console error, etc.)","Stack trace (if available)","Recovery status"],"categories":["safety-moderation","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_2","uri":"capability://automation.workflow.dom.element.interaction.and.querying","name":"dom-element-interaction-and-querying","description":"Provides MCP tools for querying DOM elements by CSS/XPath selectors, reading element properties (text, attributes, visibility), and performing interactions (click, type, focus). Implements Puppeteer's page.$()/page.$$() for selection and element.evaluate() for property extraction, enabling agents to locate and manipulate specific page elements.","intents":["I want my agent to find a button or form field by selector and interact with it","I need to extract specific text or attributes from elements on the page","I want to check if an element is visible or enabled before attempting interaction"],"best_for":["Form automation workflows (login, checkout, data entry)","Web testing agents that verify UI state and element properties","Data extraction tasks where agents target specific DOM nodes"],"limitations":["Selector-based queries require knowledge of CSS/XPath syntax — agents must infer selectors from HTML or be provided hints","No built-in retry logic for flaky selectors — if element appears after delay, query may fail","Interaction timing issues — clicking may fail if element is not yet interactive or is covered by overlay","No shadow DOM support — cannot query elements inside web components without special handling"],"requires":["Valid CSS selector or XPath expression","Page must be loaded and DOM accessible","Element must exist in DOM (visibility not required for selection)"],"input_types":["CSS selector string (e.g., 'button.submit')","XPath expression string (e.g., '//button[text()=\"Submit\"]')","Property name string (e.g., 'value', 'textContent', 'href')","Text to type (for input elements)"],"output_types":["Element property value (string, boolean, number)","Array of matching elements with properties","Interaction status (success/failure)","Element bounding box and visibility state"],"categories":["automation-workflow","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_3","uri":"capability://image.visual.screenshot.and.visual.capture","name":"screenshot-and-visual-capture","description":"Implements MCP tools for capturing page screenshots and viewport state as images. Uses Puppeteer's page.screenshot() with configurable viewport dimensions, device emulation, and format options (PNG, JPEG), returning image data as base64 or file path for visual inspection by agents or downstream systems.","intents":["I want my agent to capture a screenshot of the current page state for visual verification","I need to generate screenshots at different viewport sizes to test responsive design","I want to store visual snapshots for comparison or debugging"],"best_for":["Visual regression testing agents that compare screenshots over time","Web accessibility auditing workflows that capture page state","Documentation generation where agents screenshot pages for reports"],"limitations":["Screenshot encoding (PNG/JPEG) adds latency — large pages may take 500ms+ to capture and encode","No built-in image analysis — agent receives raw image data and must use separate vision model for interpretation","Viewport-dependent rendering — same page may look different at different widths, requiring multiple captures","No support for full-page scrolling screenshots without custom implementation"],"requires":["Page must be loaded and rendered","Viewport dimensions (width, height in pixels)","Sufficient disk space or memory for image buffer"],"input_types":["Viewport width/height (integers)","Image format enum (png, jpeg)","JPEG quality (0-100, if applicable)","Device emulation preset (optional)"],"output_types":["Base64-encoded image string","File path to saved screenshot","Image metadata (dimensions, format)"],"categories":["image-visual","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_4","uri":"capability://code.generation.editing.javascript.evaluation.in.page.context","name":"javascript-evaluation-in-page-context","description":"Provides MCP tools for executing arbitrary JavaScript code within the page context using Puppeteer's page.evaluate(). Allows agents to run custom scripts that interact with page state, DOM, and browser APIs, returning results as JSON-serializable values. Enables complex page manipulation and data extraction beyond standard DOM queries.","intents":["I want my agent to run custom JavaScript to extract data that requires complex DOM traversal or calculation","I need to trigger page-side effects (e.g., scroll, resize, trigger events) that require JavaScript execution","I want to access browser APIs (localStorage, sessionStorage, window properties) from my agent"],"best_for":["Advanced web scraping where agents need to run custom extraction logic","Testing workflows that require complex page state verification","Integration with pages that use heavy JavaScript frameworks (React, Vue, Angular)"],"limitations":["Code injection risk — arbitrary JavaScript execution requires trusted input; no sandboxing beyond browser context","Return value serialization — only JSON-serializable values can be returned; functions, DOM nodes, etc. will fail","Timeout handling — long-running scripts may block page interaction; no built-in timeout per script","No access to Node.js modules — JavaScript runs in browser context only, cannot import npm packages"],"requires":["Valid JavaScript code as string","Page must be loaded and JavaScript execution enabled","Return value must be JSON-serializable (primitives, objects, arrays)"],"input_types":["JavaScript code string","Function arguments (optional, passed to evaluated function)"],"output_types":["JSON-serializable return value (string, number, boolean, object, array)","Execution error message if script fails"],"categories":["code-generation-editing","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_5","uri":"capability://automation.workflow.form.filling.and.submission","name":"form-filling-and-submission","description":"Implements high-level MCP tools for automating form interactions: filling input fields by selector, selecting dropdown options, checking checkboxes, and submitting forms. Chains Puppeteer's type(), select(), and click() methods with element querying, handling common form patterns without requiring agents to write custom interaction sequences.","intents":["I want my agent to fill out a login form and submit it without writing individual click/type steps","I need to automate multi-field form submission (e.g., checkout, registration)","I want to select dropdown options and verify form state before submission"],"best_for":["E-commerce automation (checkout, account creation)","Testing workflows that verify form validation and submission","Data entry automation for structured forms"],"limitations":["Assumes standard HTML form elements — custom form components (React forms, etc.) may not work without JavaScript evaluation","No built-in form validation — agent must check for error messages after submission","Timing issues — form submission may trigger navigation; no automatic wait for post-submission state","No CAPTCHA handling — forms with CAPTCHA will fail without external intervention"],"requires":["Form elements must be present in DOM and accessible by selector","Input field names or selectors must be known or discoverable","Page must be loaded and interactive"],"input_types":["Form field selector (CSS or XPath)","Field value (string for text inputs, option value for selects)","Checkbox state (boolean)","Submit button selector"],"output_types":["Form submission status (success/failure)","Post-submission page URL or content","Validation error messages (if any)"],"categories":["automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_6","uri":"capability://automation.workflow.page.state.and.navigation.history.tracking","name":"page-state-and-navigation-history-tracking","description":"Tracks and exposes page state information including current URL, page title, navigation history, and load status through MCP tools. Uses Puppeteer's page.url(), page.title(), and navigation event listeners to maintain state, allowing agents to verify navigation success and understand page context.","intents":["I want my agent to verify that navigation succeeded by checking the current URL","I need to track the page title to confirm I'm on the correct page","I want to detect if the page has navigated unexpectedly (e.g., redirect)"],"best_for":["Testing workflows that verify navigation behavior","Multi-step automation where agents need to confirm page state between actions","Debugging automation failures by understanding navigation history"],"limitations":["No built-in history persistence — navigation history is lost when server restarts","URL-only tracking — cannot distinguish between different page states at the same URL","No automatic redirect detection — agent must explicitly check URL to detect redirects","Title may be updated asynchronously — title check immediately after navigation may return stale value"],"requires":["Page must be loaded","Navigation must complete (or timeout)"],"input_types":[],"output_types":["Current URL string","Page title string","Navigation status (success/timeout/error)","Navigation history array (if tracked)"],"categories":["automation-workflow","memory-knowledge"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_7","uri":"capability://automation.workflow.viewport.and.device.emulation","name":"viewport-and-device-emulation","description":"Implements MCP tools for configuring browser viewport dimensions and emulating specific devices (mobile, tablet, desktop) with realistic user agent strings and device metrics. Uses Puppeteer's page.setViewport() and page.emulateDevice() to render pages as they would appear on different devices, enabling responsive design testing.","intents":["I want my agent to test how a page renders on mobile vs desktop","I need to emulate a specific device (iPhone, iPad) to verify responsive behavior","I want to capture screenshots at different viewport sizes for comparison"],"best_for":["Responsive design testing and validation","Mobile-first development workflows","Cross-device compatibility verification"],"limitations":["Emulation is not perfect — some device-specific behaviors (touch events, sensors) may not be fully simulated","Viewport changes may require page reload to take full effect — some CSS may not reflow without reload","No touch event simulation — agents cannot test swipe or multi-touch interactions","Device list is static — new devices require Puppeteer updates"],"requires":["Viewport dimensions (width, height) or device preset name","Page must be loaded before viewport change (or reload after change)"],"input_types":["Viewport width/height (integers)","Device preset name (string, e.g., 'iPhone 12', 'iPad Pro')","Device scale factor (optional)"],"output_types":["Viewport configuration confirmation","User agent string being used","Device metrics (width, height, pixel ratio)"],"categories":["automation-workflow","image-visual"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_8","uri":"capability://memory.knowledge.cookie.and.storage.management","name":"cookie-and-storage-management","description":"Exposes MCP tools for managing browser cookies and local/session storage, allowing agents to set, read, and delete cookies to maintain session state across page navigations. Uses Puppeteer's page.setCookie(), page.cookies(), and page.evaluate() for storage access, enabling stateful automation workflows.","intents":["I want my agent to log in once and reuse the session cookie for subsequent requests","I need to set authentication tokens in cookies before navigating to protected pages","I want to clear cookies between test runs to ensure clean state"],"best_for":["Multi-step workflows requiring session persistence (login, then browse)","Testing workflows that need to simulate authenticated users","Automation of sites with session-based authentication"],"limitations":["Cookies are per-browser instance — not shared across server restarts or multiple browser instances","No automatic cookie expiration handling — expired cookies remain until manually deleted","Storage access (localStorage, sessionStorage) requires JavaScript evaluation — cannot be queried directly","Cross-domain cookies may not work as expected — Puppeteer enforces same-origin policy"],"requires":["Cookie name, value, and domain","Page must be loaded for storage access","Valid cookie format (name, value, domain, path, etc.)"],"input_types":["Cookie object (name, value, domain, path, expires, httpOnly, secure, sameSite)","Storage key/value pairs (for localStorage/sessionStorage)"],"output_types":["Array of cookies","Storage value (string)","Confirmation of cookie/storage operation"],"categories":["memory-knowledge","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-puppeteer-mcp-server__cap_9","uri":"capability://automation.workflow.wait.and.polling.for.dynamic.content","name":"wait-and-polling-for-dynamic-content","description":"Implements MCP tools for waiting for specific conditions on the page: element appearance, text content changes, navigation completion, or custom JavaScript conditions. Uses Puppeteer's page.waitForSelector(), page.waitForNavigation(), and page.waitForFunction() to handle dynamic content loading, enabling agents to synchronize with asynchronous page behavior.","intents":["I want my agent to wait for a loading spinner to disappear before proceeding","I need to wait for specific text to appear on the page (e.g., success message)","I want to wait for an element to become clickable before interacting with it"],"best_for":["Automation of pages with heavy JavaScript and dynamic content loading","Testing workflows that need to wait for asynchronous operations","Workflows with unpredictable timing (network delays, animations)"],"limitations":["Timeout handling — if condition is never met, tool will timeout and fail (default timeout may be too short or too long)","No visibility checking — waitForSelector() succeeds even if element is hidden or off-screen","Custom function conditions require JavaScript knowledge — agents must write valid JavaScript predicates","Race conditions — element may appear and disappear before agent checks, causing false negatives"],"requires":["Valid CSS selector or XPath for element waiting","Valid JavaScript function for custom conditions","Timeout value in milliseconds"],"input_types":["CSS selector or XPath string","JavaScript function string (for custom conditions)","Timeout in milliseconds","Text content to wait for (string)"],"output_types":["Confirmation that condition was met","Timeout error if condition not met","Element reference or value (if applicable)"],"categories":["automation-workflow","planning-reasoning"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":29,"verified":false,"data_access_risk":"high","permissions":["Node.js 16+ (for MCP server runtime)","Puppeteer 19.0+ (npm dependency)","Chrome or Chromium browser binary (auto-downloaded by Puppeteer or system-provided)","MCP client implementation (Claude Desktop, custom Node.js client, etc.)","Valid HTTP/HTTPS URL","Network connectivity from the server","Puppeteer page instance (managed by server)","Page must be loaded or in process of loading","Error event listeners must be registered","Valid CSS selector or XPath expression"],"failure_modes":["Experimental status — API surface and stability not guaranteed across versions","Single browser instance per server — concurrent requests may queue or conflict if not properly managed","No built-in session persistence — browser state resets between server restarts","Requires Chromium/Chrome binary on the system — adds ~100MB+ disk footprint and startup latency","No built-in JavaScript execution context visibility — agent cannot directly inspect network requests or console logs","Wait conditions (networkidle) may timeout on pages with long-polling or streaming connections","Large pages (>10MB HTML) may cause memory pressure or slow serialization to string","No cookie/session management exposed — each navigation starts fresh unless manually managed","Error detection is reactive — agent must check for errors after operations, not prevent them","No automatic recovery — agent must implement retry logic","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.05,"quality":0.47,"ecosystem":0.3,"match_graph":0.25,"freshness":0.52,"weights":{"adoption":0.25,"quality":0.25,"ecosystem":0.15,"match_graph":0.23,"freshness":0.12}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-05-24T12:16:24.482Z","last_scraped_at":"2026-05-03T14:23:40.793Z","last_commit":null},"community":{"stars":null,"forks":null,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=npm-puppeteer-mcp-server","compare_url":"https://unfragile.ai/compare?artifact=npm-puppeteer-mcp-server"}},"signature":"8/mOoe1Jfq3fZGqykIGyGBtvAcTgeq87SFeGoInQ6VDQdDo2MsI6Ccw8zFma/afOLEdJ9pxp+zB/jHZ/P4dsDQ==","signedAt":"2026-06-22T09:58:29.373Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/npm-puppeteer-mcp-server","artifact":"https://unfragile.ai/npm-puppeteer-mcp-server","verify":"https://unfragile.ai/api/v1/verify?slug=npm-puppeteer-mcp-server","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}