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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3311 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
Research Paper & DOI Lookup (Crossref)

Verify a DOI or find papers via Crossref metadata. $0.005/call via x402.

Developer ToolsCode & DevOps

Outdated check166 ms14 / 22
Country Macro Indicators (World Bank)

Official World Bank macro indicators (GDP, inflation...) by country. $0.005/call via x402.

Finance & CryptoCode & DevOps

Outdated check167 ms14 / 22
Bookingmood MCP by usefulapi

Read Bookingmood bookings, availability, guests, payments and invoices; update bookings, contacts.

Finance & CryptoPayments & trading

Responded169 ms14 / 22
Global Weather (MET Norway)

Current weather and 7-day forecast for any place (MET Norway). $0.006/call via x402.

Developer ToolsCode & DevOps

Outdated check170 ms14 / 22
AgentGate

Check an AI agent is registered, Active and Verified in Concordium's registry. By Crypto Money Maker

Finance & CryptoPayments & trading

Responded171 ms14 / 22
Email Address Check (syntax, MX, disposable, SPF/DMARC)

Check email addresses for syntax, MX and disposable domains. $0.0015/call via x402.

Developer ToolsCommunication & messaging

Outdated check171 ms14 / 22
ai.ohmyfin/invoice

Cross-border invoices for AI agents: parties screened, VAT ID checked, EN 16931 e-invoice in PDF.

Finance & CryptoPayments & trading

Responded172 ms14 / 22
Austria Property

Austrian property costs, buy-to-let underwriting, income tax and rent caps, cited to the statute

LegalCode & DevOps

Outdated check172 ms14 / 22
EU Public Tender Search (TED)

Find open EU public tenders (TED) to bid on. $0.03/call via x402.

Developer ToolsCode & DevOps

Outdated check173 ms14 / 22
InjectScan

Scan text for prompt injection: risk score, verdict, matched spans. Built by Crypto Money Maker

Finance & CryptoPayments & trading

Responded175 ms14 / 22
EU EORI Number Check

Verify EU EORI numbers in the official EC register before shipping. $0.01/call via x402.

Developer ToolsCode & DevOps

Outdated check175 ms14 / 22
EntRoute

Discover and call pay-per-request (x402) APIs, ranked by reliability, latency and price.

Finance & CryptoPayments & trading

Outdated check175 ms14 / 22
Compass by 402rates

Free agent tests (no account or payment); paid ping.

Finance & CryptoPayments & trading

Responded176 ms14 / 22
Counterparty Due Diligence

One-call counterparty screen: sanctions, export, PEP, registry. $0.10/call via x402.

Developer ToolsCode & DevOps

Outdated check176 ms14 / 22
IP Country & Network Lookup (DB-IP Lite)

Look up the country and ASN of IP addresses (DB-IP Lite). $0.001/call via x402.

Developer ToolsData access / search

Outdated check179 ms14 / 22
Recoup: AI agent refund audit

Checks AI support agent refunds against Shopify and Stripe. Read-only pricing, fit and estimates.

Finance & CryptoPayments & trading

Responded184 ms14 / 22
DexSheet: rug checks, rug-gated swaps, crypto fees and referrals

Rug check any token by address: verdict, reasons, next step. Venue picks, fees, referrals, swaps

Finance & CryptoPayments & trading

Responded184 ms14 / 22
Sanctions Screen (OFAC, EU, UK, UN)

Screen a party vs OFAC, EU and UK sanctions lists before paying. $0.02/call via x402.

Developer ToolsCode & DevOps

Outdated check184 ms14 / 22
EU Funding Calls Search

Find open and upcoming EU grant calls by topic. $0.02/call via x402.

Developer ToolsCode & DevOps

Outdated check184 ms14 / 22
Tax Numbers

Get the US federal tax numbers right, with the IRS document each one comes from.

GovernmentFile & docs

Outdated check184 ms14 / 22
EU Tender Award Winners (TED)

See who wins EU public contracts (TED award notices). $0.03/call via x402.

LegalCode & DevOps

Outdated check190 ms14 / 22
US Export Control Screening (CSL)

Screen a party vs the US Consolidated Screening List before export. $0.02/call via x402.

Developer ToolsCode & DevOps

Outdated check191 ms14 / 22
Supplier Check (VAT, EORI, Company, Sanctions, Export)

Check a supplier in one call: VAT, EORI, registry, sanctions, export lists. $0.25/call via x402.

Developer ToolsCode & DevOps

Outdated check192 ms14 / 22
SEC EDGAR Company Lookup

Get a US company's SEC filings and headline financials from EDGAR. $0.002/call via x402.

Developer ToolsCode & DevOps

Outdated check193 ms14 / 22

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