Google tells you what exists. Faceabot tells you what holds up.
Check whether a URL can be opened. No browser is launched.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/browser-url-ok/mcp · website · measurements and detailsCheck whether a URL can be opened. No browser is launched.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/playwright-url-ok/mcp · website · measurements and detailshttp/https scheme check, URL discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/url-scheme-ok/mcp · website · measurements and detailsHEAD a public URL and say whether it looks like a PDF. Body discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/pdf-url-ok/mcp · website · measurements and detailsChoose HTTP, browser, machine endpoint, or avoid before an agent visits an unfamiliar URL.
MCP endpoint :https://preflight-api-production-01a2.up.railway.app/mcp · website · measurements and detailsCheck a MongoDB URL shape. Credentials discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/mongo-url-shape/mcp · website · measurements and detailsCheck a Notion URL shape. Path discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/notion-url-shape/mcp · website · measurements and detailsCheck a Postgres URL shape. Credentials discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/postgres-url-shape/mcp · website · measurements and detailsCheck a Redis URL shape. Credentials discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/redis-url-shape/mcp · website · measurements and detailsMCP server (stdio): check if URLs are alive (status, redirects, latency) via the AgentForge API
MCP endpoint :https://apim-agentforge-6lfm33.azure-api.net/url-alive-check/mcp · measurements and detailsCheck a Supabase project URL shape. Secrets discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/supabase-url-shape/mcp · website · measurements and detailsHosted Chromium in mainland China: scripted actions, URL screenshots, print-to-PDF.
MCP endpoint :https://stagenth.com/mcp/browser/ · measurements and details26 tools: web pages to Markdown, metadata, tech stack, SSL, SEO, domains, email auth and SSO checks.
MCP endpoint :https://avalonai--web-content-url-tools-mcp.apify.actor/mcp · website · measurements and detailsSoftware end-of-life dates, open-source licenses, browser support for web features and RFC facts.
MCP endpoint :https://devfacts.openkrill.app/mcp · website · measurements and detailsScan a deployed app URL for exposed keys, open Supabase tables and missing security headers.
MCP endpoint :https://uxcontinuum.com/api/mcp · website · measurements and detailsDoes a cited URL exist, and does the source name what your claim names? Two answers.
MCP endpoint :https://exmachina-ai.fly.dev/verify · website · measurements and detailsLook up a FindMeTool page URL. Tool input stays in the browser.
MCP endpoint :https://findmetool.com/mcp · website · measurements and detailsConverts any URL to clean, LLM-ready Markdown using real Chrome browsers
MCP endpoint :https://anybrowse.dev/mcp · website · measurements and detailsExtract every URL from a website sitemap, including index and gzipped sitemaps, with status checks
MCP endpoint :https://mcp.apify.com?tools=pavel.tashev/sitemap-url-extractor · measurements and detailsStructured data validator in one call: extracts JSON-LD, microdata and RDFa from a URL or raw HTM...
MCP endpoint :https://structured-data-check.david-cyr.workers.dev/mcp · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
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