MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

Connect your agent

440 servers

Ordered by checks passedClear filters
Dated server measurements. The status describes the last probe or a listed authentication requirement. Checks that have not been measured are not failures. Open a server to inspect the evidence.
Server / capabilityLast probeMedian latencyChecks passedLast checked
Botcard

Cited AI crawler registry (training, search or user fetch) plus robots.txt checks. No fetching.

OtherBrowser & web scraping

Responded82 ms13 / 22
headlesson

Find and compare headless apps (CLI, MCP, API) for agents, with sources, lessons and changes.

EducationBrowser & web scraping

Outdated check90 ms13 / 22
AgentScrape

Pay-per-call web scraping for AI agents via x402 on Base USDC. Six tools, no signup.

Finance & CryptoBrowser & web scraping

Responded107 ms13 / 22
Fourward AI visibility tools

Score any website's AI search visibility out of 100 and see which of 20 AI crawlers can read it.

OtherBrowser & web scraping

Outdated check118 ms13 / 22
Atalaya AI crawler check

Which AI crawlers (GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot) a website allows, and why.

OtherBrowser & web scraping

Outdated check122 ms13 / 22
com.rattlesnakesbymail/rattlesnakesbymail

Dated, sourced claims about AI crawlers and agents, offered as MCP tools.

Developer ToolsBrowser & web scraping

Responded129 ms13 / 22
Token Tender

A bar for AI agents. Keep a tab, check if Claude or OpenAI is down, see which crawlers a site bans.

Developer ToolsBrowser & web scraping

Outdated check241 ms13 / 22
GEO-bot

Free check whether a website is technically open to AI assistants (AI crawlers, llms.txt, JSON-LD).

OtherBrowser & web scraping

Outdated check255 ms13 / 22
Hydrafetch

Clean web data for agents: any URL to Markdown or JSON, plus search, crawls and company brand data.

Developer ToolsBrowser & web scraping

Outdated check297 ms13 / 22
Citevana AI visibility tools

Free MCP tools for AI-search visibility: crawler checks, page audits, and llms.txt generation.

Developer ToolsBrowser & web scraping

Outdated check319 ms13 / 22
x402 Scraper API

Paid web extraction: markdown, structured JSON, market-rules and page-change checks via x402.

Developer ToolsBrowser & web scraping

Responded355 ms13 / 22
Siteiz

Check which AI crawlers a site allows and see pages the way AI crawlers do. Free, read-only.

OtherBrowser & web scraping

Responded458 ms13 / 22
pigfox.ai AI search readiness

Check if a site is ready for AI search: AI crawler access, llms.txt, JSON-LD, scored out of 100.

OtherBrowser & web scraping

Outdated check505 ms13 / 22
io.tranx/alice

Audit any site's AI visibility from your assistant: crawler access, rendering, and schema.

OtherBrowser & web scraping

Responded533 ms13 / 22
The Crawler Zoo Arena

Games for AI agents: negotiation, social deduction, racing and puzzles, vs bots and agents.

OtherBrowser & web scraping

Outdated check541 ms13 / 22
AEO Lookup

Free AI crawler, schema, llms.txt and answer-readiness checks for public web pages. No API key.

OtherBrowser & web scraping

Outdated check660 ms13 / 22
PageCritic

Audit a landing page's conversion (score, top issues, fixes) and check if AI crawlers can read it.

OtherBrowser & web scraping

Outdated check694 ms13 / 22
Domduck

Domain reputation over time: Domain Rating, Tranco rank, TLS, and AI crawler policy.

OtherBrowser & web scraping

Outdated check836 ms13 / 22
Agent Ready Website Audit

SEO and AI search audit for any website: technical SEO, schema, AI crawler access and llms.txt.

Marketing & SalesBrowser & web scraping

Outdated check1199 ms13 / 22
Hyperbrowser

Hyperbrowser MCP — wraps the Hyperbrowser AI-agent browsing API (hyperbrowser.ai). Scrape…

Developer ToolsBrowser & web scraping

Outdated check118 ms13 / 22
Oxylabs

Oxylabs MCP — Oxylabs Web Scraper API (oxylabs.io)

Developer ToolsBrowser & web scraping

Outdated check126 ms13 / 22
Scraperapi

ScraperAPI MCP — wraps ScraperAPI (scraperapi.com), a proxy-based web scraper with structured-data…

Developer ToolsBrowser & web scraping

Responded130 ms13 / 22
Agent Crawl Readiness

Bounded crawl-readiness check for agent access: robots.txt, sitemap.xml, llms.txt, homepage.

Developer ToolsBrowser & web scraping

Responded139 ms13 / 22
Scrapingbee

ScrapingBee MCP — wraps the ScrapingBee headless-scraping API (scrapingbee.com)

Developer ToolsBrowser & web scraping

Responded172 ms13 / 22

Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence