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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1565 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
Safe Merchant Solutions Assistant

Safe Merchant Solutions assistant: search services and knowledge, and request a contact.

ProductivityData access / search

Outdated check862 ms11 / 22
Amomic-AI Docs

Search the Amomic-AI docs and REST API for AI agents on calls, WhatsApp, chat and email.

ProductivityCommunication & messaging

Outdated check1634 ms11 / 22
net.reogrid/studio

Turn analyzed data into an Excel-like spreadsheet at a shareable URL: formulas, styles, filters.

ProductivityFile & docs

Outdated check1657 ms11 / 22
Audience Resolver MCP by Nova (CIVAI)

Manage Audience Resolver content calendars, rows, and social scheduling on your AR project.

ProductivityFile & docs

Responded1969 ms11 / 22
EmailMCP

AI agent email — 23 tools free to read inbox, 28 paid to send. $9.99/mo. Token auto-provisioned.

ProductivityCommunication & messaging

Outdated check2358 ms11 / 22
EnvoiSMS

Send SMS/WhatsApp and verify OTP codes in Morocco (+212) and worldwide. Direct carrier routing.

ProductivityCommunication & messaging

Outdated check199 ms11 / 22
CareerProAI

Tailor your resume to any job, score it against the ATS, and practice interviews. 7-day free trial;

ProductivityFile & docs

Outdated check384 ms11 / 22
cc.aiones/x-news-monitor

X 资讯监控:盯账号自动巡检,新帖去重中文日报,每 30 分钟自动巡查,支持飞书/Slack/Discord 推送

ProductivityCommunication & messaging

Outdated check64 ms10 / 22
Spaghetti and Summits — First-Hand Dolomites Adventures

Dolomites climbing, ski, and rifugio guides; limited anonymous inbox for plain-text owner messages.

ProductivityCommunication & messaging

Outdated check70 ms10 / 22
com.am-lich/vietnamese-calendar

Vietnamese Lunar Calendar for date and calendar conversion, and cultural insights.

ProductivityFile & docs

Outdated check76 ms10 / 22
Gluo

Free agent tools, no sign-in: browser flows, test inboxes, web extract, site and security scans.

ProductivityCommunication & messaging

Outdated check360 ms10 / 22
Fengshui Calculator

Verifiable Chinese calendar & feng shui: BaZi, flying stars, Kua, almanac. SHA-256 replayable.

ProductivityFile & docs

Outdated check481 ms10 / 22
ai.meetlark/mcp-server

Agent-first meeting schedule polls for humans and agents. Create polls, vote, find times.

ProductivityFile & docs

Outdated check484 ms10 / 22
com.dropwatchhq/bio-catalyst

Verified biotech catalyst calendar (PDUFA/AdComm/trial readouts) anchored to official sources.

ProductivityFile & docs

Responded55 ms10 / 22
com.dropwatchhq/freight-intel

Freight carrier intel: new FMCSA authority feed, carrier lookup by DOT/MC, safety screen (CSA/SMS).

ProductivityData access / search

Responded84 ms10 / 22
ZenVault

Wake-ups, webhook inboxes, TTL memory, watches and human approval for agents. Paid per call.

ProductivityCommunication & messaging

Outdated check208 ms10 / 22
Agent-Carried Work History

Your agent carries its own resume — outcome receipts minted at settlement, held by the agent.

ProductivityFile & docs

Outdated check334 ms10 / 22
CareerForge ATS v4.0 MCP

Workday, Greenhouse & Lever ATS Resume Keyword Optimizer & DOCX/PDF Kit ($1 USDC).

ProductivityFile & docs

Outdated check1358 ms10 / 22
Moltline TimeOps

Business days, meeting overlap and recurrence expansion, deterministic. 3 of 5 tools free.

ProductivityFile & docs

Outdated check473 ms9 / 22
Moltline Personal Suite

20 inbox, calendar, travel, meals and family-logistics skill products. 7 of 9 free.

ProductivityCommunication & messaging

Outdated check494 ms9 / 22
Moltline Research Desk

7 research navigation, thesis, note-taking and citation skill products. 6 of 8 free.

ProductivityKnowledge & memory

Outdated check516 ms9 / 22
com.ainetcafe/netcafe-almanac

Chinese almanac: lunar calendar, BaZi 八字, daily 宜忌, lucky-day picker, public holidays.

ProductivityFile & docs

Unreachable1670 ms9 / 22
x402 Format Checker

IBAN, EU VAT, NIP, REGON, PESEL, email checks. Only $0.001 (0.1 cent) per check via x402 on Base

ProductivityCommunication & messaging

Unreachable70 ms7 / 22
Smart Calendars AI

Create and update subscription calendars from ChatGPT, Claude, or Codex.

ProductivityPayments & trading

Unreachable243 ms7 / 22

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