MCP HeartbeatTHE MCP OBSERVATORY
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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.

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1588 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
com.x402supply/page-extract

URL to clean article markdown/text + metadata and links. Deterministic. $0.001/call via x402.

Finance & CryptoFile & docs

Outdated check63 ms11 / 22
Forum for Agents

Free web reader for agents: any URL to clean Markdown. Plus a public message board for agents.

Developer ToolsFile & docs

Outdated check72 ms11 / 22
io.github.lishuhang/site-mcp

航通社官网(lishuhang.me,书航博客 + 每日 AIGC 早报)只读检索:文章与早报列表、关键词搜索、单篇全文 markdown。Streamable HTTP,免鉴权,无状态。

Developer ToolsFile & docs

Responded77 ms11 / 22
Professor Sausages — Web & Documents

Read pages & files to text, news, weather, market holidays and timezones via x402.

Data & AnalyticsFile & docs

Outdated check77 ms11 / 22
FreeSign — Free e-signature

Free e-signature for humans and AI agents — zero-document PDF signing from hashes only.

Developer ToolsFile & docs

Outdated check86 ms11 / 22
build.fabricate/fabricate

Public Fabricate pricing and documentation tools.

OtherFile & docs

Responded88 ms11 / 22
Agent Reality Layer

Buy timestamped web, company, commerce, social, document and decision data via x402.

Developer ToolsFile & docs

Responded92 ms11 / 22
IPOGrid IPO Calendar & Filing Research

IPO calendar, SEC filings, deal terms, and IPO news research via the IPOGrid MCP server.

ProductivityFile & docs

Responded98 ms11 / 22
Pagemd

Read any public web page as clean Markdown for LLMs, with its metadata. Paid per call, x402.

Finance & CryptoFile & docs

Outdated check103 ms11 / 22
Stringer CleanExtract

Convert public HTML or a public URL into token-dense Markdown through one remote MCP tool.

Developer ToolsFile & docs

Responded116 ms11 / 22
GameAnalytics Documentation

Search GameAnalytics docs: Unity, Unreal, iOS, Android SDK and API guides for mobile game analytics.

Data & AnalyticsFile & docs

Responded120 ms11 / 22
PDFShift

A remote MCP server to convert HTML documents (URL or raw source) to PDF or screenshots

Developer ToolsFile & docs

Responded137 ms11 / 22
Ghosty Studio docs

Docs de Ghosty Studio para agentes: búsqueda, páginas en markdown, índice y OpenAPI. Sin auth.

Developer ToolsFile & docs

Outdated check159 ms11 / 22
CSV Import Rehearsal

Simulate a CSV import against a supplied typed column contract and return exact accepted rows, re...

LegalFile & docs

Outdated check173 ms11 / 22
Lemou Free APIs for AI Agents

Free HTML/CSV conversion, JSON validation, text stats and time APIs. Optional agent interviews.

Developer ToolsFile & docs

Outdated check177 ms11 / 22
io.github.DataLeadsPRO/url-to-markdown

Convert any webpage to clean LLM-ready markdown, extraction-first, with article and news modes.

Developer ToolsFile & docs

Responded180 ms11 / 22
QBCore Community Documentation

Independent QBCore API, resource and troubleshooting docs with cited sources.

Developer ToolsFile & docs

Outdated check182 ms11 / 22
Quasar product guide

Read-only guide to Quasar, the AI-agent-first project management tool. No sign-in needed.

ProductivityFile & docs

Outdated check201 ms11 / 22
legal.captain/captain-legal

Compliant legal documents from your AI assistant: 1,100+ templates, 15 countries, free preview.

LegalFile & docs

Responded236 ms11 / 22
com.pdfia/pdf-tools

Free PDF tools for AI agents: merge, split, rotate, watermark, page numbers, metadata, flatten.

Developer ToolsFile & docs

Outdated check249 ms11 / 22
org.urltopdf/webpage-to-pdf

Convert any public webpage to a PDF. Single narrow tool, not a bloated PDF toolkit.

OtherFile & docs

Responded318 ms11 / 22
Responded352 ms11 / 22
Unofficial Tesoro High School MCP

Read-only search over Tesoro High School's public documents. Unofficial, unaffiliated.

EducationFile & docs

Outdated check366 ms11 / 22
Plate

Minimal project management for teams and AI agents.

ProductivityFile & docs

Responded370 ms11 / 22

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