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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5788 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
Noonlaunch

Launch a product on Noonlaunch, search its directory and weekly winners, and find 333 launch sites.

Developer ToolsData access / search

Responded2157 ms15 / 22
Pro Flight Search Airport Delays

Read-only airport delay, weather, and 24h forecast tools for AI assistants. Airport-level only.

TravelData access / search

Responded2299 ms15 / 22
Ainovaq

Ainovaq AI venture studio: list services, get service details, search the blog, contact info.

Developer ToolsData access / search

Responded2327 ms15 / 22
Aviation & Space Weather Data (Tanod)

Flight and sky conditions for agents, from METAR/TAF and airports to aurora and satellite passes.

TravelData access / search

Responded2341 ms15 / 22
Crypto & Macro Market Data (Tanod)

Market data for agents: token prices, DeFi TVL and DEX volume, perp funding, FX, yields, SEC data.

Finance & CryptoData access / search

Responded2444 ms15 / 22
AI Benchmark Index

Search 264 AI benchmarks by category, with data sources and licences for each.

OtherData access / search

Responded3560 ms15 / 22
Redocly

Search and read the Redocly product docs, guides and blog on redocly.com, and report a wrong page.

Developer ToolsData access / search

Responded3906 ms15 / 22
MemeStack

Visual search for memes, infographics and charts — by meaning, OCR text, or image similarity.

MediaData access / search

Responded6123 ms15 / 22
Departi – Travel Compliance & Curated Booking

Travel-compliance intelligence and curated booking for digital nomads and long-stay travellers.

TravelData access / search

Responded6155 ms15 / 22
Dubai Data — Dubai real estate statistics

Dubai property prices, AED/sqft, sales, rents, yields and projects from DLD registered transactions.

Real Estate & PropertyData access / search

Responded35 ms14 / 22
Crypto Market Data

Live crypto market data and Hyperliquid wallet reports for AI agents, paid per call with x402.

Finance & CryptoData access / search

Responded47 ms14 / 22
Zenkit MCP by usefulapi

Read workspaces, lists, fields, members, activity and entries, and search them in Zenkit.

Developer ToolsData access / search

Outdated check51 ms14 / 22
Referrals.com MCP by usefulapi

Read brands, campaigns and stats; create or update brands and campaigns in Referrals.com.

Marketing & SalesData access / search

Outdated check51 ms14 / 22
Vatstack MCP by usefulapi

Validate VAT numbers, look up VAT rates and review past checks and plan hits in Vatstack.

Developer ToolsData access / search

Outdated check52 ms14 / 22
Weatherbit MCP by usefulapi

Read Weatherbit forecasts, weather history, air quality, agriculture, energy, and API usage.

Data & AnalyticsData access / search

Outdated check53 ms14 / 22
Stream MCP by usefulapi

Query channels, search messages, and read threads, users and reactions in your Stream Chat app.

Developer ToolsData access / search

Outdated check53 ms14 / 22
RentMy MCP by usefulapi

Search rental products, check prices and build carts in RentMy.

OtherData access / search

Outdated check53 ms14 / 22
ReferralHero MCP by usefulapi

Read ReferralHero campaigns, subscribers, referrals and rewards; add subscribers and points.

Marketing & SalesData access / search

Outdated check53 ms14 / 22
Health Gorilla MCP by usefulapi

Query Health Gorilla FHIR patients, conditions, medications and lab results.

HealthcareData access / search

Outdated check53 ms14 / 22
Census MCP by usefulapi

List reverse-ETL sources, destinations, models, syncs and runs; trigger syncs into SaaS tools.

GovernmentData access / search

Outdated check53 ms14 / 22
Viral Loops MCP by usefulapi

Read campaign stats, participants, referrals, ranks and rewards in Viral Loops.

Marketing & SalesData access / search

Outdated check54 ms14 / 22
Taggun MCP by usefulapi

Scan receipts with Taggun OCR from a URL or file and read receipt-validation campaigns.

Marketing & SalesData access / search

Outdated check54 ms14 / 22
NCBI PubMed MCP by usefulapi

Search PubMed, read abstracts and summaries, and find similar articles in NCBI PubMed.

Developer ToolsData access / search

Outdated check54 ms14 / 22
Mention MCP by usefulapi

Read alerts, mentions, authors, statistics and shares in Mention.

Data & AnalyticsData access / search

Outdated check54 ms14 / 22

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