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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41255 servers

Ordered by checks passed
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
Dim Hour

Search 19,000+ verified places to eat and drink across 24 cities, each with a 0-100 quality score.

OtherData access / search

Outdated check173 ms15 / 22
CardWorthScanner — TCG Price, Centering & PSA Grading ROI Engine

Calculate PSA/BGS/CGC card grading ROI, 55/45 centering grades & Pokemon/Yu-Gi-Oh market values.

OtherOther

Outdated check173 ms15 / 22
Yardstick Outfitters

Size-aware motorcycle gear for every riding style: sizing, fit guides, verified deals (read-only).

Developer ToolsCode & DevOps

Responded174 ms15 / 22
ComplyCube MCP by usefulapi

List and create clients, run AML screening checks and read results in ComplyCube.

Developer ToolsCode & DevOps

Responded174 ms15 / 22
Cogmento MCP by usefulapi

Read Cogmento CRM contacts, companies, deals, tasks and cases; create records and complete tasks.

Marketing & SalesData access / search

Responded174 ms15 / 22
SuperDuperBundle game prices

Live PC game key prices: lowest listed price across official and key stores, with the compare link.

Developer ToolsCode & DevOps

Responded174 ms15 / 22
TradingAIHub directory

Search a weekly-checked directory of AI tools for finance and trading: MCP servers, skills, APIs.

Finance & CryptoData access / search

Outdated check174 ms15 / 22
US federal rules taking effect

Which published US federal rules take effect between two dates, and which CFR parts they amend?

GovernmentCode & DevOps

Outdated check174 ms15 / 22
Mailvett: Email Validation API for AI Agents

Mailvett: validate emails. MX, provider, disposable/role/free flags, typo fix, verdict.

Developer ToolsCommunication & messaging

Outdated check174 ms15 / 22
Ullas Opskrifter (Danish recipes)

Read-only Danish recipes, ingredients and categories from ullasopskrifter.dk: search and browse.

OtherData access / search

Outdated check174 ms15 / 22
Buttondown MCP by usefulapi

Read Buttondown subscribers, emails, analytics and automations; add subscribers; write email drafts.

Data & AnalyticsAutomation & workflows

Responded175 ms15 / 22
Saldeo MCP by usefulapi

Read SaldeoSMART companies, contractors, documents, invoices, bank statements and employees.

Finance & CryptoPayments & trading

Responded176 ms15 / 22
Brightpearl MCP by usefulapi

Search Brightpearl orders, products, stock, contacts and payments; add notes, update order status.

Finance & CryptoPayments & trading

Responded176 ms15 / 22
Keep Me Secure

Tells your coding agent whether your installed packages need patching, with advice on what to do.

Developer ToolsCode & DevOps

Responded176 ms15 / 22
Postlyra

Manage Telegram drafts, media, schedules and publications from AI clients.

Developer ToolsCommunication & messaging

Outdated check176 ms15 / 22
Mirabello Immigration Intelligence

Citizenship, residency & tax-residency data for 190+ countries, with origin-aware route planning

Finance & CryptoPayments & trading

Outdated check176 ms15 / 22
Deputy MCP by usefulapi

See rosters, timesheets, leave and staff in Deputy, and create shifts, leave and memos.

Developer ToolsCode & DevOps

Responded177 ms15 / 22
Cortex

Patent-pending semantic memory for AI agents: quality-gated writes, conflict tracking. Free trial.

LegalCode & DevOps

Outdated check177 ms15 / 22
Foxy.io MCP by usefulapi

Read Foxy transactions, subscriptions, customers, carts and coupons; update customers and subs.

Developer ToolsPayments & trading

Responded178 ms15 / 22
Average Rent

Compare US apartment asking rents, market trends, and price cuts. Sign in with Average Rent.

Developer ToolsCode & DevOps

Outdated check178 ms15 / 22
Africa's Talking MCP by usefulapi

Read Africa's Talking balance, incoming SMS, transactions; send SMS, airtime, data and voice calls.

ProductivityCommunication & messaging

Responded179 ms15 / 22
EU e-invoicing and business checks (EN 16931, Peppol, VAT, sanctions)

EN 16931/XRechnung e-invoice validate+create, Peppol routing, EU VAT/EORI, sanctions, KYB. Free tier

Finance & CryptoPayments & trading

Responded179 ms15 / 22
Cledara MCP by usefulapi

List applications, transactions and invoice download links in Cledara.

Finance & CryptoPayments & trading

Responded180 ms15 / 22
Buildium MCP by usefulapi

Read Buildium properties, units, leases, tenants, balances and bills; manage work orders.

Real Estate & PropertyData access / search

Responded180 ms15 / 22

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