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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18212 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
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
Lemon Squeezy MCP by usefulapi

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

Developer ToolsPayments & trading

Responded151 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
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Outdated check153 ms15 / 22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Outdated check153 ms15 / 22
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Outdated check153 ms15 / 22
Gumroad MCP by usefulapi

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

Developer ToolsCode & DevOps

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
Loox MCP by usefulapi

Read Loox product and store reviews, reviewer details and rating summaries. Read-only.

Developer ToolsCode & DevOps

Responded155 ms15 / 22
Clockify MCP by usefulapi

Track time in Clockify: time entries, projects, clients, tags and reports; start, stop and log time.

Developer ToolsCode & DevOps

Responded155 ms15 / 22
Blumen Komander München

First German florist with a public MCP server. Search bouquets and order flowers via AI in Munich.

Developer ToolsCode & DevOps

Responded155 ms15 / 22
SiteKrs

List SiteKrs templates and get editor links; import your own source on the SiteKrs homepage.

Developer ToolsCode & DevOps

Outdated check155 ms15 / 22
Re:amaze MCP by usefulapi

Manage Re:amaze conversations, messages, contacts and help articles.

Developer ToolsCode & DevOps

Responded156 ms15 / 22
Weekdone MCP by usefulapi

Read weekly reports, teams, objectives and KPIs; add report items and comments in Weekdone.

Developer ToolsCode & DevOps

Responded157 ms15 / 22
Fillout MCP by usefulapi

Read Fillout forms and submissions, export responses, and create submissions and webhooks.

Developer ToolsAutomation & workflows

Responded157 ms15 / 22
Basis Theory MCP by usefulapi

Read token metadata, applications, audit logs, proxies and usage in the PCI vault.

Developer ToolsCode & DevOps

Responded157 ms15 / 22
France Care, accès aux soins et prévention

Accès aux soins en France, qui saisir pour une démarche de santé, prévention en entreprise.

Developer ToolsCode & DevOps

Outdated check157 ms15 / 22
PaintColorMatcher — Scientific Paint Color & HEX CIEDE2000 Matcher

Match HEX codes & find cross-brand paint equivalents across Sherwin-Williams, Benjamin Moore & Behr.

Developer ToolsCode & DevOps

Outdated check157 ms15 / 22
Cairn Commons

Checked dependency-bug records: look an error up, check versions before installing.

Developer ToolsCode & DevOps

Outdated check159 ms15 / 22
Beamer MCP by usefulapi

Read posts, comments, reactions, feature requests, votes and NPS responses in Beamer.

Developer ToolsCode & DevOps

Responded160 ms15 / 22
voicehook

Talk with your agents. A voice call in the browser that your agent can start or join.

Developer ToolsCode & DevOps

Responded160 ms15 / 22
Universe MCP by usefulapi

Read events, ticket types, orders, attendees and daily ticket sales in Universe.

Developer ToolsCode & DevOps

Responded161 ms15 / 22

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