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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629 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
MusicAtlas

Search, analyze, and discover commercially released music using sonic intelligence.

MediaData access / search

Outdated check96 ms11 / 22
API Hubs

Generate AI video, images and music. Browse models and prices; OAuth and one prepaid balance.

MediaCode & DevOps

Outdated check123 ms11 / 22
Brickfact LEGO Shopping

Find LEGO sets, compare regional retailer offers, and inspect recorded retail price history.

E-commerceCode & DevOps

Outdated check136 ms11 / 22
API Stock

Generate AI video, images and music. Browse models and prices; OAuth and one prepaid balance.

MediaCode & DevOps

Outdated check165 ms11 / 22
steamwebapi

Live Steam Market API docs, schemas, products, games, markets and endpoint search.

Developer ToolsCode & DevOps

Outdated check280 ms11 / 22
Agent Arcade Protocol 5

AI-only game publishing, autonomous play, live observation, replay and independent certification.

OtherOther

Outdated check282 ms11 / 22
Capital Health

Search sports nutrition in Russia, compare live prices and create Capital Health cart links.

MediaData access / search

Outdated check424 ms11 / 22
Pauline — Crescendo Magazine

Classical music discovery: 656 composers (women & lesser-known), concerts in Belgium, CD reviews.

MediaCode & DevOps

Outdated check425 ms11 / 22
io.github.MelMayssonOwen/clef

Read-only music guides, chord transposition, piano chord spelling and guitar-tab pitch mapping.

MediaCode & DevOps

Outdated check449 ms11 / 22
Kingy Guides

Game guides from kingy.wiki: sourced answers, one-level hints and credited exact video moments.

MediaCode & DevOps

Outdated check460 ms11 / 22
io.github.SirCharan/theflamesgame

FLAMES name game plus love and friendship calculators by name. A game, not a prediction.

Developer ToolsCode & DevOps

Outdated check462 ms11 / 22
Colophon: translation quotes; image, music, font and patent licensing

Translation by language pair and field, and licences for images, music, fonts and patents.

MediaAI / LLM tooling

Outdated check476 ms11 / 22
Vatic prediction markets

Crowd forecasts on sports, politics, finance and crypto: live odds, outcomes, Ask the crowd.

Finance & CryptoPayments & trading

Outdated check500 ms11 / 22
com.agentorist/agentorist

Booking gateway for AI agents — discover events, movies & hotels, hand off to partner checkout.

Finance & CryptoPayments & trading

Outdated check541 ms11 / 22
Music Agent by Nova (CIVAI)

I do everything related to music and lyrics

MediaAI / LLM tooling

Outdated check612 ms11 / 22
SpaceMolt

MMO game for AI agents: mine, trade, craft, explore, and battle in a galaxy of ~500 systems

Developer ToolsCode & DevOps

Outdated check615 ms11 / 22
Time's up Skybridge example App

Skybridge Example App showcasing a Time's up game with the LLM

OtherAI / LLM tooling

Outdated check626 ms11 / 22
PGA Golf

PGA's official MCP Server for all things golf-related. Find a coach, play golf, improve your game.

OtherOther

Outdated check671 ms11 / 22
Investigation Game App

Find out who killed Claude by interrogating the LLM driven suspects...

OtherAI / LLM tooling

Outdated check704 ms11 / 22
Julklappsspel Gifts – hand-picked gift ideas

Hand-picked gift ideas for Christmas gift games, turned into shareable wishlists fast.

Developer ToolsCode & DevOps

Outdated check718 ms11 / 22
com.jojapi/google-search

google search: google web search api, web, images, videos, news, music, favicon, proxy, audio.

MediaData access / search

Outdated check730 ms11 / 22
Elo Pros — a game store agents play, build and get paid on

Play Gates, take bounties on the board, shop the store. Free over MCP; no keys held.

Developer ToolsCode & DevOps

Outdated check730 ms11 / 22
Agent Arcade

Create, test and play AI-native games through server-authoritative contracts.

LegalAI / LLM tooling

Outdated check787 ms11 / 22
MGS Toolbox

Fantasy TTRPG data: metals, minerals, ingredients, potions, gems, craft rules, music catalogue.

MediaAI / LLM tooling

Outdated check820 ms11 / 22

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