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

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7731 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
Remite

Send a burofax or certified letter to a Spanish address, with proof of delivery and content.

OtherOther

Responded70 ms13 / 22
Ishigaki Ferries & Islands

Ishigaki and Yaeyama ferries: status today, next boats, day planner, which island, best month.

OtherOther

Responded70 ms13 / 22
PageWatch - page-to-data extraction and change monitoring

Extract prices, lists, tables, events from static pages and watch them for changes.

OtherMonitoring & observability

Responded70 ms13 / 22
LFG Atlas

Find live looking-for-group posts for 28+ games and post an LFG for the user. Free, no account.

OtherOther

Responded70 ms13 / 22
Simple China Trip

How foreigners book 135 China attractions: official channels, passport rules, ticket release times.

OtherOther

Responded70 ms13 / 22
Buba public catalogue and guides

Read-only fictional adult AI companion catalogue and Buba product documentation.

OtherFile & docs

Responded70 ms13 / 22
Swatch

Check WCAG color contrast, fix failing colors, build 50-950 palettes. No account.

OtherOther

Responded70 ms13 / 22
Artemisia · Aguas SB

Orientación sobre agua de pozo, vertidos y reutilización, con lo publicado por Aguas SB.

OtherOther

Responded70 ms13 / 22
Japan Business Tools

Japanese holidays, business days, eras, postal codes, addresses and corporate numbers.

OtherOther

Responded71 ms13 / 22
Runsheet

Create a live, shareable day-of schedule for weddings, shoots, conferences and events.

OtherOther

Responded71 ms13 / 22
Robots.txt Policy Lint

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

OtherOther

Responded72 ms13 / 22
EveryAI

Search EveryAI's reviewed directory of 2,000+ AI tools by task, and check or prepare listings.

OtherData access / search

Responded72 ms13 / 22
com.sgpbusiness/singapore-entities-directory

Free, read-only lookup of Singapore registered entities by name or UEN, from ACRA/UEN open data.

OtherData access / search

Responded73 ms13 / 22
US Tariff Lookup

Find the right US tariff code for a product and the duty rate that actually governs it.

OtherData access / search

Responded73 ms13 / 22
What's On Asia Events

Verified events from the What's On sites in 14 cities across Asia and the US.

OtherOther

Responded73 ms13 / 22
Review Times

Live review times for AI app stores: ChatGPT, Claude, Muse, Grok, Cursor. Check before you submit.

OtherAI / LLM tooling

Responded74 ms13 / 22
co.theoldways/library

Search historical texts and mythology references with citation URLs from The Old Ways library.

OtherKnowledge & memory

Responded74 ms13 / 22
Epoch Calculator

Unix timestamps, DST-aware time zone conversion, durations, cron schedules, and holiday countdowns

OtherAutomation & workflows

Responded74 ms13 / 22
Dynomatix

Enquiries for Dynomatix, a software practice.

OtherOther

Responded74 ms13 / 22
Spill

Find leaked API keys, tokens and passwords in pasted text, see which are live, get a clean copy.

OtherOther

Responded74 ms13 / 22
Doorman

Check which AI bots a website or a pasted robots.txt lets in, grouped by purpose.

OtherOther

Responded74 ms13 / 22
Lanmao Free AI Credits

Hand-verified free AI credits, API trials and free tiers. Read-only, no auth, updated daily.

OtherOther

Responded74 ms13 / 22
Faceabot Rail Ireland (Irish Rail, DART)

Irish trains and DART: live direct trains in the next 90 minutes, departures. Free, no key.

OtherOther

Responded75 ms13 / 22
com.holydb/holydb-mcp

HolyDB: find Catholic churches in the US with Mass, Confession and Adoration times.

OtherOther

Responded76 ms13 / 22

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