MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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

3337 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
io.github.mercuryx402/mercury-x402-mcp

Agent-payable web data over x402: 18 keyless services an agent pays per call.

Developer ToolsCode & DevOps

Outdated check968 ms13 / 22
com.expatriationtaxcalculator/site

Expatriation Tax Calculator: the site's own MCP server — calculator, enquiry (enquiry = a human...

Finance & CryptoPayments & trading

Responded979 ms13 / 22
Trainer Connect

Manage students, workouts, appointments and payments through your personal trainer account.

Finance & CryptoPayments & trading

Responded980 ms13 / 22
io.github.brawlaphant/vealth

Vealth work board: find real work, claim free with your wallet, prove it. Free onchain anchoring.

Finance & CryptoPayments & trading

Responded984 ms13 / 22
OT Intel API

OT/ICS threat intel for AI agents: 40 tools, pay per call in USDC on Base via x402.

Finance & CryptoPayments & trading

Responded985 ms13 / 22
com.maltacryptolicence/site

Malta Crypto Licence: the site's own MCP server — enquiry (enquiry = a human handoff, not a...

Finance & CryptoPayments & trading

Responded993 ms13 / 22
com.maltataxrefundcalculator/site

Malta Tax Refund Calculator: the site's own MCP server — calculator, enquiry (enquiry = a human...

Finance & CryptoPayments & trading

Responded1007 ms13 / 22
FinzData

Point-in-time stocks, ETFs, futures, GEX, crypto, FX, macro, COT, 13F, ships, ports, flights, power.

Finance & CryptoPayments & trading

Responded1042 ms13 / 22
com.cryptoamlpolicy/site

Crypto AML Policy: the site's own MCP server — enquiry (enquiry = a human handoff, not a...

Finance & CryptoPayments & trading

Responded1051 ms13 / 22
My Budget Control

Read your MBC budget totals and prepare expenses for separate human approval. No bank payments.

Finance & CryptoPayments & trading

Responded1056 ms13 / 22
AXIS Avatar Foundry

3D avatar/asset foundry: text/image -> rigged, validated, engine-ready GLB via x402.

MediaPayments & trading

Responded1058 ms13 / 22
com.cryptolicencecosts/site

Crypto Licence Costs: the site's own MCP server — calculator, enquiry (enquiry = a human...

Finance & CryptoPayments & trading

Responded1072 ms13 / 22
com.buyukesim/mcp

No-logs VPN, real UK +44 number eSIMs and travel-data eSIMs, bought with crypto. No KYC, no account.

Finance & CryptoPayments & trading

Responded1081 ms13 / 22
InstaVeil Agent Commerce

Instagram research, Story monitoring and creator comparison. MCP x402 paid calls, USDC on Solana.

Finance & CryptoPayments & trading

Responded1081 ms13 / 22
Research Lab · Đầu Tư Tài Sản Mã Hoá

Daily crypto market data (Vietnamese): market cap, stablecoins, open interest, funding, Fear&Greed

Finance & CryptoData access / search

Responded1095 ms13 / 22
Have It Printed

Print and mail physical documents in the US via USPS, with quotes, agent payment and tracking.

Finance & CryptoPayments & trading

Responded1108 ms13 / 22
N9T2 XRPL Agent Gateway

Agent-native XRPL infrastructure: 19 paid MCP tools, x402 USDC on Base, non-custodial XRPL actions.

Finance & CryptoPayments & trading

Responded1121 ms13 / 22
Feegate AI Agent data marketplace catalog & platform metrics

Feegate: pay-per-call MCP data marketplace. Free discovery, 34 tools; paid queries via x402 USDC.

Finance & CryptoPayments & trading

Responded1126 ms13 / 22
AgentResolver — Agent Commerce Health Monitoring

Free API/MCP/x402 health checks plus $19 hourly managed monitoring for agent services.

Developer ToolsMonitoring & observability

Outdated check1137 ms13 / 22
Deep Blue Alpha — Ethereum Whale Data

Live Ethereum whale flows: token activity, top tokens, latest moves, Whale Sentiment Index.

Finance & CryptoPayments & trading

Responded1149 ms13 / 22
Lordevo Agent Directory

Search a directory of agent-callable services, incl. x402 pay-per-call APIs on Base.

Finance & CryptoData access / search

Responded1154 ms13 / 22
Coin IRA Crypto Calculators

Historical crypto investment and retirement calculators with cited market data.

Finance & CryptoData access / search

Responded1180 ms13 / 22
ClearPage

Web page to clean Markdown and metadata for agents. Free daily trial, then x402 USDC.

Finance & CryptoPayments & trading

Responded1241 ms13 / 22
io.github.maggat/hardware-wallet-chooser

Hardware wallet comparison for agents: BitBox, Ledger, Trezor – sourced data, buying checklist

Finance & CryptoPayments & trading

Responded1263 ms13 / 22

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