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.

Connect your agent

4688 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
Dolphin Centrifuge

Specs, stock, RCF sizing and quotes for remanufactured Alfa Laval centrifuges (Warren, MI).

Finance & CryptoPayments & trading

Responded242 ms14 / 22
BASE167

Claim BASE167 and enter Degen Games, a monthly on-chain trading contest on Base.

Finance & CryptoPayments & trading

Responded245 ms14 / 22
Témoin public

Prove a web page or document existed on a date: public SHA-256 registry anchored in Bitcoin. Free.

Finance & CryptoPayments & trading

Outdated check245 ms14 / 22
PlugCat

Check if a US bank, credit union or brokerage connects to Monarch, YNAB and other finance apps

Finance & CryptoPayments & trading

Responded248 ms14 / 22
Flashift

Zero-key, non-custodial cross-chain crypto swap aggregator for AI agents: 100+ chains, 15+ providers

Finance & CryptoPayments & trading

Outdated check248 ms14 / 22
LuckDrop

Enter LuckDrop's free weekly on-chain prize draw, check the live draw, and claim prizes.

Finance & CryptoPayments & trading

Responded249 ms14 / 22
Attention Trends

Topic popularity, interest over time and trending topics from Wikipedia pageviews (x402 paid).

Finance & CryptoKnowledge & memory

Responded251 ms14 / 22
StampyWallet

StampyWallet: digital loyalty card for local shops, in Apple Wallet or Google Wallet, no app.

Finance & CryptoPayments & trading

Responded252 ms14 / 22
Multi-ATS Jobs MCP Server

Free live multi-ATS + HN job search. Comp & hiring-signal depth metered via x402/USDC. Hosted MCP.

Finance & CryptoPayments & trading

Responded252 ms14 / 22
io.github.UnityNodes/blobpedia

Celestia knowledge base: CIPs, docs, forum, videos, GitHub, plus live on-chain state

Finance & CryptoKnowledge & memory

Responded253 ms14 / 22
io.github.digitalweb33333-creator/x402-endpoints

x402 paid API tools for AI agents on Base: EU/global registries, crypto, wallet & agent trust.

Finance & CryptoPayments & trading

Responded255 ms14 / 22
Kenwea — Sandbox Attestation & Agent Marketplace

Signed sandbox verdicts on any artifact, plus an agent marketplace. No key, no signup, no payment.

Finance & CryptoPayments & trading

Outdated check255 ms14 / 22
ICARE live esports predictions

AI agents predict live esports games settled by an AI referee, with gasless x402 USDC bets on Base.

Finance & CryptoPayments & trading

Outdated check256 ms14 / 22
footage.cool: 4K Drone & Aerial Stock Footage

Search and license 54,000+ drone, aerial, and ocean clips, mostly 4K, from filmmaker Phil Maher.

Finance & CryptoData access / search

Responded260 ms14 / 22
Posadita – direct-booking holiday rentals

Holiday rentals booked direct with the host: availability, prices, checkout links. No auth.

Finance & CryptoPayments & trading

Responded261 ms14 / 22
eSIM Tabby

Buy and manage travel eSIM data plans in the conversation. Pay by card (Stripe) or USDC over x402.

Finance & CryptoPayments & trading

Responded262 ms14 / 22
CounterpartyCheck

Pre-payment check for EVM/Solana addresses: ok/caution/block with reasons. By Crypto Money Maker

Finance & CryptoPayments & trading

Responded262 ms14 / 22
Clear Tape

Free trading calculators, trading-system rules, a glossary and lesson search. No market data.

Finance & CryptoData access / search

Responded262 ms14 / 22
Synthex Forge — x402 Paid Agent Services

Paid agent services settled in USDC on Base via x402. Signed, verifiable, and free to verify.

Finance & CryptoPayments & trading

Outdated check263 ms14 / 22
Svijet Beba — katalog dječje opreme

Croatian baby & kids catalogue: EUR prices, stock, delivery, variants, specs and Q&A.

Finance & CryptoPayments & trading

Responded265 ms14 / 22
eSIM Eagle Plan Finder

Find public eSIM plans by destination, trip length, data needs, currency, and locale.

Finance & CryptoPayments & trading

Responded265 ms14 / 22
DomainCheck

Domain and email trust checks for agents: DNS, SPF/DMARC, disposable email. By Crypto Money Maker

Finance & CryptoCommunication & messaging

Responded267 ms14 / 22
AgentData — crypto market data with a checkable record

Verifiable crypto signals, recorded history and always-on monitoring for AI agents via x402 on Base.

Finance & CryptoData access / search

Responded267 ms14 / 22
Kann KI das? Sponsoring

Find available sponsorship slots and create buyer-confirmed Stripe Checkouts on kannkidas.de.

Finance & CryptoPayments & trading

Responded268 ms14 / 22

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