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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41013 servers

Ordered by checks passed
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
QuickUnits

Exact unit conversion with the factor and a citable page URL. Answers in your language.

Developer ToolsCode & DevOps

Responded150 ms15 / 22
Tailscale MCP by usefulapi

Read devices, users, keys, ACLs and DNS for a tailnet; manage devices, routes and auth keys.

Developer ToolsCode & DevOps

Responded151 ms15 / 22
Speechmatics MCP by usefulapi

Transcribe audio and video with Speechmatics speech-to-text from Claude and any MCP client.

MediaAI / LLM tooling

Responded151 ms15 / 22
Lemon Squeezy MCP by usefulapi

MCP server for Lemon Squeezy — stores, products, orders, subscriptions, license keys.

Developer ToolsPayments & trading

Responded151 ms15 / 22
Finnhub MCP by usefulapi

Quotes, company profiles, fundamentals, earnings and IPO calendars, plus market and company news.

ProductivityFile & docs

Responded151 ms15 / 22
bol.com MCP by usefulapi

Read bol orders, returns, offers and inventory; update an offer’s stock, price or sale status.

Finance & CryptoPayments & trading

Responded151 ms15 / 22
VeryChic Hotel Deals

Unofficial read-only MCP server for VeryChic hotel offers

TravelCode & DevOps

Outdated check151 ms15 / 22
Miramo

French rental law for tenants and landlords: rent caps, rental zones and unfurnished lease drafts.

Real Estate & PropertyData access / search

Outdated check151 ms15 / 22
PakBus

Bus and metro journeys, departures, routes, fares and service changes in Pakistani cities.

OtherOther

Outdated check151 ms15 / 22
Patreon MCP by usefulapi

Read campaigns, tiers, patrons, posts and profile details in Patreon.

Marketing & SalesData access / search

Responded152 ms15 / 22
Taasky

Agent-to-agent negotiation: schedule meetings, agree prices and terms; each human approves the deal.

ProductivityFile & docs

Outdated check152 ms15 / 22
Plutio MCP by usefulapi

Manage Plutio clients, projects, tasks, time entries and invoices.

Finance & CryptoPayments & trading

Responded153 ms15 / 22
LiveWebinar MCP by usefulapi

Read webinars, sessions, registrants and polls; create scheduled webinars in LiveWebinar.

Developer ToolsCode & DevOps

Responded153 ms15 / 22
Hetzner Cloud MCP by usefulapi

Servers, volumes, networks, firewalls, load balancers, pricing and safe power operations.

Developer ToolsCode & DevOps

Responded153 ms15 / 22
FreeAgent MCP by usefulapi

Read FreeAgent contacts, invoices, bills, banking and reports; add contacts, draft invoices, time.

Finance & CryptoPayments & trading

Responded153 ms15 / 22
UNESCO UIS Education Statistics MCP

UNESCO UIS statistics (education, science, culture) with full provenance and fixed releases.

Data & AnalyticsCode & DevOps

Responded153 ms15 / 22
PadelTrue padel racket data

Published padel racket specifications, each with its source, and calculated ratings. Read only.

Developer ToolsCode & DevOps

Outdated check153 ms15 / 22
Cairn Commons (read-only)

Read-only: look up checked dependency bugs and check versions before installing. No account.

Developer ToolsData access / search

Outdated check153 ms15 / 22
aikstockdata — Korean Stock Data

Korean stocks: median price path after each DART filing type, T+1 closes, earnings. 12 tools, no key

Finance & CryptoPayments & trading

Outdated check153 ms15 / 22
Swarmnest

Search AI agent tools, MCP servers and Skills. Verified agents post Field Reports and on The Hive.

Developer ToolsData access / search

Outdated check153 ms15 / 22
Tiltify MCP by usefulapi

Read campaigns, donations and top donor and fundraiser leaderboards in Tiltify.

Marketing & SalesData access / search

Responded154 ms15 / 22
Gumroad MCP by usefulapi

Read products, sales, subscribers and offer codes; verify, enable and disable product licenses.

Developer ToolsCode & DevOps

Responded154 ms15 / 22
Gelato MCP by usefulapi

Browse the Gelato catalog, prices, orders and shipping; quote, create draft orders and products.

OtherOther

Responded154 ms15 / 22
CallHippo MCP by usefulapi

Read users, contacts and call logs; manage contacts and Do Not Call numbers in CallHippo.

Developer ToolsCode & DevOps

Responded154 ms15 / 22

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